C#全能数据库操作类及调用示例

C#全能数据库操作类及调用示例

using System;
using System.Data;
using System.Data.Common;
using System.Configuration;
namespace MSCL
{
    ///

    /// DbHelper通用数据库类
    ///

    public class DbHelper
    {
        ///

        ///
        ///

        private static string dbProviderName = ConfigurationManager.AppSettings["DbHelperProvider"]; 

        ///

        ///
        ///

        private static string dbConnectionString = ConfigurationManager.AppSettings["ConnectionString"]; 

        private DbConnection connection;
        public DbHelper()
        {
            this.connection = CreateConnection(DbHelper.dbConnectionString);
        }
        public DbHelper(string connectionString)
        {
            this.connection = CreateConnection(connectionString);
        }
        public static DbConnection CreateConnection()
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbConnection dbconn = dbfactory.CreateConnection();
            dbconn.ConnectionString = DbHelper.dbConnectionString;
            return dbconn;
        }
        public static DbConnection CreateConnection(string connectionString)
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbConnection dbconn = dbfactory.CreateConnection();
            dbconn.ConnectionString = connectionString;
            return dbconn;
        } 

        ///

        /// 执行存储过程
        ///

        ///存储过程名
        ///
        public DbCommand GetStoredProcCommand(string storedProcedure)
        {
            DbCommand dbCommand = connection.CreateCommand();
            dbCommand.CommandText = storedProcedure;
            dbCommand.CommandType = CommandType.StoredProcedure;
            return dbCommand;
        } 

        ///

        /// 执行SQL语句
        ///

        ///SQL语句
        ///
        public DbCommand GetSqlStringCommand(string sqlQuery)
        {
            DbCommand dbCommand = connection.CreateCommand();
            dbCommand.CommandText = sqlQuery;
            dbCommand.CommandType = CommandType.Text;
            return dbCommand;
        } 

        #region 增加参数  

        public void AddParameterCollection(DbCommand cmd, DbParameterCollection dbParameterCollection)
        {
            foreach (DbParameter dbParameter in dbParameterCollection)
            {
                cmd.Parameters.Add(dbParameter);
            }
        } 

        ///

        /// 增加输出参数
        ///

        ///
        ///
        ///
        ///
        public void AddOutParameter(DbCommand cmd, string parameterName, DbType dbType, int size)
        {
            DbParameter dbParameter = cmd.CreateParameter();
            dbParameter.DbType = dbType;
            dbParameter.ParameterName = parameterName;
            dbParameter.Size = size;
            dbParameter.Direction = ParameterDirection.Output;
            cmd.Parameters.Add(dbParameter);
        } 

        ///

        /// 增加输入参数
        ///

        ///
        ///
        ///
        ///
        public void AddInParameter(DbCommand cmd, string parameterName, DbType dbType, object value)
        {
            DbParameter dbParameter = cmd.CreateParameter();
            dbParameter.DbType = dbType;
            dbParameter.ParameterName = parameterName;
            dbParameter.Value = value;
            dbParameter.Direction = ParameterDirection.Input;
            cmd.Parameters.Add(dbParameter);
        } 

        ///

        /// 增加返回参数
        ///

        ///
        ///
        ///
        public void AddReturnParameter(DbCommand cmd, string parameterName, DbType dbType)
        {
            DbParameter dbParameter = cmd.CreateParameter();
            dbParameter.DbType = dbType;
            dbParameter.ParameterName = parameterName;
            dbParameter.Direction = ParameterDirection.ReturnValue;
            cmd.Parameters.Add(dbParameter);
        } 

        public DbParameter GetParameter(DbCommand cmd, string parameterName)
        {
            return cmd.Parameters[parameterName];
        } 

        #endregion 

        #region 执行  

        ///

        /// 执行查询返回DataSet
        ///

        ///
        ///
        public DataSet ExecuteDataSet(DbCommand cmd)
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataSet ds = new DataSet();
            dbDataAdapter.Fill(ds);
            return ds;
        } 

        ///

        /// 执行查询返回DataTable
        ///

        ///
        ///
        public DataTable ExecuteDataTable(DbCommand cmd)
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataTable dataTable = new DataTable();
            dbDataAdapter.Fill(dataTable);
            return dataTable;
        } 

        ///

        /// 执行查询返回DataReader
        ///

        ///
        ///
        public DbDataReader ExecuteReader(DbCommand cmd)
        {
            cmd.Connection.Open();
            DbDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            return reader;
        } 

        ///

        /// 执行SQL语句，返回影响行数
        ///

        ///
        ///
        public int ExecuteNonQuery(DbCommand cmd)
        {
            cmd.Connection.Open();
            int ret = cmd.ExecuteNonQuery();
            cmd.Connection.Close();
            return ret;
        } 

        ///

        /// 返回首行首列对象
        ///

        ///
        ///
        public object ExecuteScalar(DbCommand cmd)
        {
            cmd.Connection.Open();
            object ret = cmd.ExecuteScalar();
            cmd.Connection.Close();
            return ret;
        }
        #endregion 

        #region 执行事务  

        ///

        /// 执行事务返回DataSet
        ///

        ///
        ///
        ///
        public DataSet ExecuteDataSet(DbCommand cmd, Trans t)
        {
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataSet ds = new DataSet();
            dbDataAdapter.Fill(ds);
            return ds;
        } 

        ///

        /// 执行事务返回DataTable
        ///

        ///
        ///
        ///
        public DataTable ExecuteDataTable(DbCommand cmd, Trans t)
        {
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataTable dataTable = new DataTable();
            dbDataAdapter.Fill(dataTable);
            return dataTable;
        } 

        ///

        /// 执行事务返回DataReader
        ///

        ///
        ///
        ///
        public DbDataReader ExecuteReader(DbCommand cmd, Trans t)
        {
            cmd.Connection.Close();
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            DbDataReader reader = cmd.ExecuteReader();
            return reader;
        } 

        ///

        /// 执行事务SQL语句返回影响行数
        ///

        ///
        ///
        ///
        public int ExecuteNonQuery(DbCommand cmd, Trans t)
        {
            cmd.Connection.Close();
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            int ret = cmd.ExecuteNonQuery();
            return ret;
        } 

        ///

        /// 执行事务SQL语句返回首行首列
        ///

        ///
        ///
        ///
        public object ExecuteScalar(DbCommand cmd, Trans t)
        {
            cmd.Connection.Close();
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            object ret = cmd.ExecuteScalar();
            return ret;
        }
        #endregion
    } 

    public class Trans : IDisposable
    {
        private DbConnection conn;
        private DbTransaction dbTrans;
        public DbConnection DbConnection
        {
            get { return this.conn; }
        }
        public DbTransaction DbTrans
        {
            get { return this.dbTrans; }
        } 

        public Trans()
        {
            conn = DbHelper.CreateConnection();
            conn.Open();
            dbTrans = conn.BeginTransaction();
        }
        public Trans(string connectionString)
        {
            conn = DbHelper.CreateConnection(connectionString);
            conn.Open();
            dbTrans = conn.BeginTransaction();
        }
        public void Commit()
        {
            dbTrans.Commit();
            this.Colse();
        } 

        public void RollBack()
        {
            dbTrans.Rollback();
            this.Colse();
        } 

        public void Dispose()
        {
            this.Colse();
        } 

        public void Colse()
        {
            if (conn.State == System.Data.ConnectionState.Open)
            {
                conn.Close();
            }
        }
    }
} 

using System;
using System.Data;
using System.Data.Common;
using System.Configuration;
namespace MSCL
{
    ///

    /// DbHelper通用数据库类
    ///

    public class DbHelper
    {
        ///

        ///
        ///

        private static string dbProviderName = ConfigurationManager.AppSettings["DbHelperProvider"];

        ///

        ///
        ///

        private static string dbConnectionString = ConfigurationManager.AppSettings["ConnectionString"];

        private DbConnection connection;
        public DbHelper()
        {
            this.connection = CreateConnection(DbHelper.dbConnectionString);
        }
        public DbHelper(string connectionString)
        {
            this.connection = CreateConnection(connectionString);
        }
        public static DbConnection CreateConnection()
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbConnection dbconn = dbfactory.CreateConnection();
            dbconn.ConnectionString = DbHelper.dbConnectionString;
            return dbconn;
        }
        public static DbConnection CreateConnection(string connectionString)
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbConnection dbconn = dbfactory.CreateConnection();
            dbconn.ConnectionString = connectionString;
            return dbconn;
        }

        ///

        /// 执行存储过程
        ///

        ///存储过程名
        ///
        public DbCommand GetStoredProcCommand(string storedProcedure)
        {
            DbCommand dbCommand = connection.CreateCommand();
            dbCommand.CommandText = storedProcedure;
            dbCommand.CommandType = CommandType.StoredProcedure;
            return dbCommand;
        }

        ///

        /// 执行SQL语句
        ///

        ///SQL语句
        ///
        public DbCommand GetSqlStringCommand(string sqlQuery)
        {
            DbCommand dbCommand = connection.CreateCommand();
            dbCommand.CommandText = sqlQuery;
            dbCommand.CommandType = CommandType.Text;
            return dbCommand;
        }

        #region 增加参数

        public void AddParameterCollection(DbCommand cmd, DbParameterCollection dbParameterCollection)
        {
            foreach (DbParameter dbParameter in dbParameterCollection)
            {
                cmd.Parameters.Add(dbParameter);
            }
        }

        ///

        /// 增加输出参数
        ///

        ///
        ///
        ///
        ///
        public void AddOutParameter(DbCommand cmd, string parameterName, DbType dbType, int size)
        {
            DbParameter dbParameter = cmd.CreateParameter();
            dbParameter.DbType = dbType;
            dbParameter.ParameterName = parameterName;
            dbParameter.Size = size;
            dbParameter.Direction = ParameterDirection.Output;
            cmd.Parameters.Add(dbParameter);
        }

        ///

        /// 增加输入参数
        ///

        ///
        ///
        ///
        ///
        public void AddInParameter(DbCommand cmd, string parameterName, DbType dbType, object value)
        {
            DbParameter dbParameter = cmd.CreateParameter();
            dbParameter.DbType = dbType;
            dbParameter.ParameterName = parameterName;
            dbParameter.Value = value;
            dbParameter.Direction = ParameterDirection.Input;
            cmd.Parameters.Add(dbParameter);
        }

        ///

        /// 增加返回参数
        ///

        ///
        ///
        ///
        public void AddReturnParameter(DbCommand cmd, string parameterName, DbType dbType)
        {
            DbParameter dbParameter = cmd.CreateParameter();
            dbParameter.DbType = dbType;
            dbParameter.ParameterName = parameterName;
            dbParameter.Direction = ParameterDirection.ReturnValue;
            cmd.Parameters.Add(dbParameter);
        }

        public DbParameter GetParameter(DbCommand cmd, string parameterName)
        {
            return cmd.Parameters[parameterName];
        }

        #endregion

        #region 执行

        ///

        /// 执行查询返回DataSet
        ///

        ///
        ///
        public DataSet ExecuteDataSet(DbCommand cmd)
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataSet ds = new DataSet();
            dbDataAdapter.Fill(ds);
            return ds;
        }

        ///

        /// 执行查询返回DataTable
        ///

        ///
        ///
        public DataTable ExecuteDataTable(DbCommand cmd)
        {
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataTable dataTable = new DataTable();
            dbDataAdapter.Fill(dataTable);
            return dataTable;
        }

        ///

        /// 执行查询返回DataReader
        ///

        ///
        ///
        public DbDataReader ExecuteReader(DbCommand cmd)
        {
            cmd.Connection.Open();
            DbDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            return reader;
        }

        ///

        /// 执行SQL语句，返回影响行数
        ///

        ///
        ///
        public int ExecuteNonQuery(DbCommand cmd)
        {
            cmd.Connection.Open();
            int ret = cmd.ExecuteNonQuery();
            cmd.Connection.Close();
            return ret;
        }

        ///

        /// 返回首行首列对象
        ///

        ///
        ///
        public object ExecuteScalar(DbCommand cmd)
        {
            cmd.Connection.Open();
            object ret = cmd.ExecuteScalar();
            cmd.Connection.Close();
            return ret;
        }
        #endregion

        #region 执行事务

        ///

        /// 执行事务返回DataSet
        ///

        ///
        ///
        ///
        public DataSet ExecuteDataSet(DbCommand cmd, Trans t)
        {
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataSet ds = new DataSet();
            dbDataAdapter.Fill(ds);
            return ds;
        }

        ///

        /// 执行事务返回DataTable
        ///

        ///
        ///
        ///
        public DataTable ExecuteDataTable(DbCommand cmd, Trans t)
        {
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DbHelper.dbProviderName);
            DbDataAdapter dbDataAdapter = dbfactory.CreateDataAdapter();
            dbDataAdapter.SelectCommand = cmd;
            DataTable dataTable = new DataTable();
            dbDataAdapter.Fill(dataTable);
            return dataTable;
        }

        ///

        /// 执行事务返回DataReader
        ///

        ///
        ///
        ///
        public DbDataReader ExecuteReader(DbCommand cmd, Trans t)
        {
            cmd.Connection.Close();
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            DbDataReader reader = cmd.ExecuteReader();
            return reader;
        }

        ///

        /// 执行事务SQL语句返回影响行数
        ///

        ///
        ///
        ///
        public int ExecuteNonQuery(DbCommand cmd, Trans t)
        {
            cmd.Connection.Close();
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            int ret = cmd.ExecuteNonQuery();
            return ret;
        }

        ///

        /// 执行事务SQL语句返回首行首列
        ///

        ///
        ///
        ///
        public object ExecuteScalar(DbCommand cmd, Trans t)
        {
            cmd.Connection.Close();
            cmd.Connection = t.DbConnection;
            cmd.Transaction = t.DbTrans;
            object ret = cmd.ExecuteScalar();
            return ret;
        }
        #endregion
    }

    public class Trans : IDisposable
    {
        private DbConnection conn;
        private DbTransaction dbTrans;
        public DbConnection DbConnection
        {
            get { return this.conn; }
        }
        public DbTransaction DbTrans
        {
            get { return this.dbTrans; }
        }

        public Trans()
        {
            conn = DbHelper.CreateConnection();
            conn.Open();
            dbTrans = conn.BeginTransaction();
        }
        public Trans(string connectionString)
        {
            conn = DbHelper.CreateConnection(connectionString);
            conn.Open();
            dbTrans = conn.BeginTransaction();
        }
        public void Commit()
        {
            dbTrans.Commit();
            this.Colse();
        }

        public void RollBack()
        {
            dbTrans.Rollback();
            this.Colse();
        }

        public void Dispose()
        {
            this.Colse();
        }

        public void Colse()
        {
            if (conn.State == System.Data.ConnectionState.Open)
            {
                conn.Close();
            }
        }
    }
}

使用示例

using System;
using System.Collections.Generic;
using System.Text; 

namespace MSCL
{
    #region 使用示例
    /*
        List ftvlist = new List();
        ftvlist.Add(new FieldTypeValue("ErrorDetail", "这是个错误"));
        ftvlist.Add(new FieldTypeValue("ErrorFlag", "1"));
        ftvlist.Add(new FieldTypeValue("ErrorRemark","这是个错误，我还没有处理"));
        ftvlist.Add(new FieldTypeValue("ErrorTime", DateTime.Now.ToString()));
        ftvlist.Add(new FieldTypeValue("OprationTime", DateTime.Now.ToString()));
        //新增
        string sql = MSCL.BuilderSql.createInsertSql("AFM_SysLog", ftvlist);
        MSCL.SqlHelper.ExecSql(sql);
        //修改
        string sql = MSCL.BuilderSql.createUpdateSql("AFM_SysLog", ftvlist, "ErrorID", "166");
        MSCL.SqlHelper.ExecSql(sql);
        //删除
        string sql = MSCL.BuilderSql.createDeleteSql("AFM_SysLog", "ErrorID", "166");
        MSCL.SqlHelper.ExecSql(sql);
    */
    #endregion 

    #region 数据表字段类
    ///

    /// 数据表字段类
    ///

    public class FieldTypeValue
    {
        ///

        /// 字段容器
        ///

        ///字段名
        ///字段值
        ///是否数字字段
        public FieldTypeValue(string fieldName, string fieldValue, bool isNum)
        {
            this.fieldName = fieldName;
            this.fieldValue = fieldValue;
            this.isNum = isNum;
        } 

        ///

        /// 字段容器
        ///

        ///字段名
        ///字段值
        public FieldTypeValue(string fieldName, string fieldValue)
        {
            this.fieldName = fieldName;
            this.fieldValue = fieldValue;
        } 

        private string fieldName;
        ///

        /// 字段名
        ///

        public string FieldName
        {
            get { return fieldName; }
            set { fieldName = value; }
        } 

        private bool isNum = false;
        ///

        /// 是否数字
        ///

        public bool IsNum
        {
            get { return isNum; }
            set { isNum = value; }
        } 

        private string fieldValue;
        ///

        /// 字段值
        ///

        public string FieldValue
        {
            get { return fieldValue; }
            set { fieldValue = value; }
        }
    }
    #endregion 

    #region SQL语句的构造类
    ///

    /// SQL语句的构造类
    ///

    public class BuilderSql
    { 

        ///

        /// 构造新增Insert语句
        ///

        ///表名
        ///字段list
        ///
        public static string createInsertSql(string tableName, List ftvlist)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(" insert into ");
            sb.Append(tableName);
            sb.Append("(");
            for (int i = ; i < ftvlist.Count; i++)
            {
                FieldTypeValue ftv = (FieldTypeValue)ftvlist[i];
                if (i != ftvlist.Count - )
                {
                    sb.Append(ftv.FieldName + ",");
                }
                else
                {
                    sb.Append(ftv.FieldName);
                }
            }
            sb.Append(") values(");
            for (int i = ; i < ftvlist.Count; i++)
            {
                FieldTypeValue ftv = (FieldTypeValue)ftvlist[i];
                if (ftv.IsNum)
                {
                    if (i != ftvlist.Count - )
                    {
                        sb.Append(ftv.FieldValue + ",");
                    }
                    else
                    {
                        sb.Append(ftv.FieldValue);
                    }
                }
                else
                {
                    if (i != ftvlist.Count - )
                    {
                        sb.Append("'" + ftv.FieldValue + "',");
                    }
                    else
                    {
                        sb.Append("'" + ftv.FieldValue + "'");
                    }
                }
            }
            sb.Append(")");
            return sb.ToString();
        } 

        ///

        /// 构造更新Update语句
        ///

        ///表名
        ///字段list
        ///主键名
        ///主键值
        ///
        public static string createUpdateSql(string tableName, List ftvlist, string pkName, string pkValue)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(" update ");
            sb.Append(tableName);
            sb.Append(" set");
            for (int i = ; i < ftvlist.Count; i++)
            {
                FieldTypeValue ftv = (FieldTypeValue)ftvlist[i];
                if (i != ftvlist.Count - )
                {
                    if (ftv.IsNum)
                    {
                        sb.Append(" " + ftv.FieldName + "=" + ftv.FieldValue + ",");
                    }
                    else
                    {
                        sb.Append(" " + ftv.FieldName + "='" + ftv.FieldValue + "',");
                    }
                }
                else
                {
                    if (ftv.IsNum)
                    {
                        sb.Append(" " + ftv.FieldName + "=" + ftv.FieldValue + "");
                    }
                    else
                    {
                        sb.Append(" " + ftv.FieldName + "='" + ftv.FieldValue + "'");
                    }
                }
            }
            sb.Append(" where " + pkName + "=" + pkValue);
            return sb.ToString();
        } 

        ///

        /// 构造删除Delete语句
        ///

        ///表名
        ///主键名
        ///主键值
        ///
        public static string createDeleteSql(string tableName, string pkName, string pkValue)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(" delete from ");
            sb.Append(tableName);
            sb.Append(" where " + pkName + " = '" + pkValue + "'");
            return sb.ToString();
        }
    }
    #endregion
} 

using System;
using System.Collections.Generic;
using System.Text;

namespace MSCL
{
    #region 使用示例
    /*
        List ftvlist = new List();
        ftvlist.Add(new FieldTypeValue("ErrorDetail", "这是个错误"));
        ftvlist.Add(new FieldTypeValue("ErrorFlag", "1"));
        ftvlist.Add(new FieldTypeValue("ErrorRemark","这是个错误，我还没有处理"));
        ftvlist.Add(new FieldTypeValue("ErrorTime", DateTime.Now.ToString()));
        ftvlist.Add(new FieldTypeValue("OprationTime", DateTime.Now.ToString()));
        //新增
        string sql = MSCL.BuilderSql.createInsertSql("AFM_SysLog", ftvlist);
        MSCL.SqlHelper.ExecSql(sql);
        //修改
        string sql = MSCL.BuilderSql.createUpdateSql("AFM_SysLog", ftvlist, "ErrorID", "166");
        MSCL.SqlHelper.ExecSql(sql);
        //删除
        string sql = MSCL.BuilderSql.createDeleteSql("AFM_SysLog", "ErrorID", "166");
        MSCL.SqlHelper.ExecSql(sql);
    */
    #endregion

    #region 数据表字段类
    ///

    /// 数据表字段类
    ///

    public class FieldTypeValue
    {
        ///

        /// 字段容器
        ///

        ///字段名
        ///字段值
        ///是否数字字段
        public FieldTypeValue(string fieldName, string fieldValue, bool isNum)
        {
            this.fieldName = fieldName;
            this.fieldValue = fieldValue;
            this.isNum = isNum;
        }

        ///

        /// 字段容器
        ///

        ///字段名
        ///字段值
        public FieldTypeValue(string fieldName, string fieldValue)
        {
            this.fieldName = fieldName;
            this.fieldValue = fieldValue;
        }

        private string fieldName;
        ///

        /// 字段名
        ///

        public string FieldName
        {
            get { return fieldName; }
            set { fieldName = value; }
        }

        private bool isNum = false;
        ///

        /// 是否数字
        ///

        public bool IsNum
        {
            get { return isNum; }
            set { isNum = value; }
        }

        private string fieldValue;
        ///

        /// 字段值
        ///

        public string FieldValue
        {
            get { return fieldValue; }
            set { fieldValue = value; }
        }
    }
    #endregion

    #region SQL语句的构造类
    ///

    /// SQL语句的构造类
    ///

    public class BuilderSql
    {

        ///

        /// 构造新增Insert语句
        ///

        ///表名
        ///字段list
        ///
        public static string createInsertSql(string tableName, List ftvlist)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(" insert into ");
            sb.Append(tableName);
            sb.Append("(");
            for (int i = ; i < ftvlist.Count; i++)
            {
                FieldTypeValue ftv = (FieldTypeValue)ftvlist[i];
                if (i != ftvlist.Count - )
                {
                    sb.Append(ftv.FieldName + ",");
                }
                else
                {
                    sb.Append(ftv.FieldName);
                }
            }
            sb.Append(") values(");
            for (int i = ; i < ftvlist.Count; i++)
            {
                FieldTypeValue ftv = (FieldTypeValue)ftvlist[i];
                if (ftv.IsNum)
                {
                    if (i != ftvlist.Count - )
                    {
                        sb.Append(ftv.FieldValue + ",");
                    }
                    else
                    {
                        sb.Append(ftv.FieldValue);
                    }
                }
                else
                {
                    if (i != ftvlist.Count - )
                    {
                        sb.Append("'" + ftv.FieldValue + "',");
                    }
                    else
                    {
                        sb.Append("'" + ftv.FieldValue + "'");
                    }
                }
            }
            sb.Append(")");
            return sb.ToString();
        }

        ///

        /// 构造更新Update语句
        ///

        ///表名
        ///字段list
        ///主键名
        ///主键值
        ///
        public static string createUpdateSql(string tableName, List ftvlist, string pkName, string pkValue)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(" update ");
            sb.Append(tableName);
            sb.Append(" set");
            for (int i = ; i < ftvlist.Count; i++)
            {
                FieldTypeValue ftv = (FieldTypeValue)ftvlist[i];
                if (i != ftvlist.Count - )
                {
                    if (ftv.IsNum)
                    {
                        sb.Append(" " + ftv.FieldName + "=" + ftv.FieldValue + ",");
                    }
                    else
                    {
                        sb.Append(" " + ftv.FieldName + "='" + ftv.FieldValue + "',");
                    }
                }
                else
                {
                    if (ftv.IsNum)
                    {
                        sb.Append(" " + ftv.FieldName + "=" + ftv.FieldValue + "");
                    }
                    else
                    {
                        sb.Append(" " + ftv.FieldName + "='" + ftv.FieldValue + "'");
                    }
                }
            }
            sb.Append(" where " + pkName + "=" + pkValue);
            return sb.ToString();
        }

        ///

        /// 构造删除Delete语句
        ///

        ///表名
        ///主键名
        ///主键值
        ///
        public static string createDeleteSql(string tableName, string pkName, string pkValue)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(" delete from ");
            sb.Append(tableName);
            sb.Append(" where " + pkName + " = '" + pkValue + "'");
            return sb.ToString();
        }
    }
    #endregion
}

[csharp]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using MSCL; 

public partial class SQLDemo : System.Web.UI.Page
{
    DbHelper db = new DbHelper();
    protected void Page_Load(object sender, EventArgs e)
    { 

    } 

    //新增数据
    protected void Button1_Click(object sender, EventArgs e)
    {
        List ftvlist = new List();
        ftvlist.Add(new FieldTypeValue("[D_Name]", "测试用户" + DateTime.Now.ToString("yyyyMMddhhmmss")));
        ftvlist.Add(new FieldTypeValue("[D_Password]", "测试密码" + DateTime.Now.ToString("yyyyMMddhhmmss")));
        ftvlist.Add(new FieldTypeValue("[D_Else]", "测试备注" + DateTime.Now.ToString("yyyyMMddhhmmss")));
        string sql = BuilderSql.createInsertSql("TestTable", ftvlist);
        int opFlag = db.ExecuteNonQuery(db.GetSqlStringCommand(sql));
        if (opFlag > ) { JsHelper.Alert("新增成功!", Page); } else { JsHelper.Alert("新增失败!", Page); };
    } 

    //修改数据
    protected void Button2_Click(object sender, EventArgs e)
    {
        List ftvlist = new List();
        ftvlist.Add(new FieldTypeValue("[D_Name]", "这是个错误dsadsadasd"));
        ftvlist.Add(new FieldTypeValue("[D_Password]", "aaa这是个错误，我还没有处理"));
        ftvlist.Add(new FieldTypeValue("[D_Else]", "aaa这是个错误，我还没有处理"));
        string sql = BuilderSql.createUpdateSql("TestTable", ftvlist, "D_ID", "");
        int opFlag = db.ExecuteNonQuery(db.GetSqlStringCommand(sql));
        if (opFlag > ) { JsHelper.Alert("修改成功!", Page); } else { JsHelper.Alert("修改失败!", Page); };
    } 

    //删除数据
    protected void Button3_Click(object sender, EventArgs e)
    {
        string sql = BuilderSql.createDeleteSql("[TestTable]", "[D_Id]", "");
        int opFlag = db.ExecuteNonQuery(db.GetSqlStringCommand(sql));
        if (opFlag > ) { JsHelper.Alert("删除成功!", Page); } else { JsHelper.Alert("删除失败!", Page); };
    } 

    //事务提交
    protected void Button4_Click(object sender, EventArgs e)
    {
        using (Trans t = new Trans())
        {
            try
            {
                db.ExecuteNonQuery(db.GetSqlStringCommand("insert into TestTable(D_Name,D_Password,D_Else) values('aaaaa1','bbbbbb1','cccccc1')"), t);
                db.ExecuteNonQuery(db.GetSqlStringCommand("insert into TestTable(D_Name,D_Password,D_Else) values('aaaaa2','bbbbbb2','cccccc2')"), t);
                db.ExecuteNonQuery(db.GetSqlStringCommand("insert into TestTable(D_Name,D_Password,D_Else) values('aaaaa3','bbbbbb3','cccccc3')"), t);
                db.ExecuteNonQuery(db.GetSqlStringCommand("insert into TestTable(D_Name,D_Password,D_Else) values('aaaaa4','bbbbbb4','cccccc4')"), t);
                db.ExecuteNonQuery(db.GetSqlStringCommand("insert into TestTable(D_Name,D_Password,D_Else) values('aaaaa5','bbbbbb5','cccccc5')"), t);
                t.Commit();
                JsHelper.Alert("事务提交成功!", Page);
            }
            catch
            {
                t.RollBack();
                JsHelper.Alert("事务提交失败!", Page);
            }
        }
    } 

} 

SQL SERVER C#数据库操作类(连接、执行SQL)

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace LiTianPing.SQLServerDAL //可以修改成实际项目的命名空间名称
{
 /// <summary>
 /// Copyright (C) 2004-2008 LiTianPing
 /// 数据访问基础类(基于SQLServer)
 /// 用户可以修改满足自己项目的需要。
 /// </summary>
 public abstract class DbHelperSQL
 {
  //数据库连接字符串(web.config来配置)
  //<add key="ConnectionString" value="server=127.0.0.1;database=DATABASE;uid=sa;pwd=" />
  protected static string connectionString = ConfigurationSettings.AppSettings["ConnectionString"];
  public DbHelperSQL()
  {
  }

  #region 公用方法

  public static int GetMaxID(string FieldName,string TableName)
  {
   string strsql = "select max(" + FieldName + ")+1 from " + TableName;
   object obj = GetSingle(strsql);
   if (obj == null)
   {
    return ;
   }
   else
   {
    return int.Parse(obj.ToString());
   }
  }
  public static bool Exists(string strSql, params SqlParameter[] cmdParms)
  {
   object obj = GetSingle(strSql, cmdParms);
   int cmdresult;
   if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
   {
    cmdresult = ;
   }
   else
   {
    cmdresult = int.Parse(obj.ToString());
   }
   if (cmdresult == )
   {
    return false;
   }
   else
   {
    return true;
   }
  }
  #endregion

  #region  执行简单SQL语句

  /// <summary>
  /// 执行SQL语句，返回影响的记录数
  /// </summary>
  /// <param name="SQLString">SQL语句</param>
  /// <returns>影响的记录数</returns>
  public static int ExecuteSql(string SQLString)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    using (SqlCommand cmd = new SqlCommand(SQLString,connection))
    {
     try
     {
      connection.Open();
      int rows=cmd.ExecuteNonQuery();
      return rows;
     }
     catch(System.Data.SqlClient.SqlException E)
     {
      connection.Close();
      throw new Exception(E.Message);
     }
    }
   }
  }

  /// <summary>
  /// 执行多条SQL语句，实现数据库事务。
  /// </summary>
  /// <param name="SQLStringList">多条SQL语句</param>
  public static void ExecuteSqlTran(ArrayList SQLStringList)
  {
   using (SqlConnection conn = new SqlConnection(connectionString))
   {
    conn.Open();
    SqlCommand cmd = new SqlCommand();
    cmd.Connection=conn;
    SqlTransaction tx=conn.BeginTransaction();
    cmd.Transaction=tx;
    try
    {
     for(int n=;n<SQLStringList.Count;n++)
     {
      string strsql=SQLStringList[n].ToString();
      if (strsql.Trim().Length>)
      {
       cmd.CommandText=strsql;
       cmd.ExecuteNonQuery();
      }
     }
     tx.Commit();
    }
    catch(System.Data.SqlClient.SqlException E)
    {
     tx.Rollback();
     throw new Exception(E.Message);
    }
   }
  }
  /// <summary>
  /// 执行带一个存储过程参数的的SQL语句。
  /// </summary>
  /// <param name="SQLString">SQL语句</param>
  /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
  /// <returns>影响的记录数</returns>
  public static int ExecuteSql(string SQLString,string content)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    SqlCommand cmd = new SqlCommand(SQLString,connection);
    System.Data.SqlClient.SqlParameter  myParameter = new System.Data.SqlClient.SqlParameter ( "@content", SqlDbType.NText);
    myParameter.Value = content ;
    cmd.Parameters.Add(myParameter);
    try
    {
     connection.Open();
     int rows=cmd.ExecuteNonQuery();
     return rows;
    }
    catch(System.Data.SqlClient.SqlException E)
    {
     throw new Exception(E.Message);
    }
    finally
    {
     cmd.Dispose();
     connection.Close();
    }
   }
  }
  /// <summary>
  /// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
  /// </summary>
  /// <param name="strSQL">SQL语句</param>
  /// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
  /// <returns>影响的记录数</returns>
  public static int ExecuteSqlInsertImg(string strSQL,byte[] fs)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    SqlCommand cmd = new SqlCommand(strSQL,connection);
    System.Data.SqlClient.SqlParameter  myParameter = new System.Data.SqlClient.SqlParameter ( "@fs", SqlDbType.Image);
    myParameter.Value = fs ;
    cmd.Parameters.Add(myParameter);
    try
    {
     connection.Open();
     int rows=cmd.ExecuteNonQuery();
     return rows;
    }
    catch(System.Data.SqlClient.SqlException E)
    {
     throw new Exception(E.Message);
    }
    finally
    {
     cmd.Dispose();
     connection.Close();
    }
   }
  }

  /// <summary>
  /// 执行一条计算查询结果语句，返回查询结果（object）。
  /// </summary>
  /// <param name="SQLString">计算查询结果语句</param>
  /// <returns>查询结果（object）</returns>
  public static object GetSingle(string SQLString)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    using(SqlCommand cmd = new SqlCommand(SQLString,connection))
    {
     try
     {
      connection.Open();
      object obj = cmd.ExecuteScalar();
      if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value)))
      {
       return null;
      }
      else
      {
       return obj;
      }
     }
     catch(System.Data.SqlClient.SqlException e)
     {
      connection.Close();
      throw new Exception(e.Message);
     }
    }
   }
  }
  /// <summary>
  /// 执行查询语句，返回SqlDataReader
  /// </summary>
  /// <param name="strSQL">查询语句</param>
  /// <returns>SqlDataReader</returns>
  public static SqlDataReader ExecuteReader(string strSQL)
  {
   SqlConnection connection = new SqlConnection(connectionString);
   SqlCommand cmd = new SqlCommand(strSQL,connection);
   try
   {
    connection.Open();
    SqlDataReader myReader = cmd.ExecuteReader();
    return myReader;
   }
   catch(System.Data.SqlClient.SqlException e)
   {
    throw new Exception(e.Message);
   }   

  }
  /// <summary>
  /// 执行查询语句，返回DataSet
  /// </summary>
  /// <param name="SQLString">查询语句</param>
  /// <returns>DataSet</returns>
  public static DataSet Query(string SQLString)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    DataSet ds = new DataSet();
    try
    {
     connection.Open();
     SqlDataAdapter command = new SqlDataAdapter(SQLString,connection);
     command.Fill(ds,"ds");
    }
    catch(System.Data.SqlClient.SqlException ex)
    {
     throw new Exception(ex.Message);
    }
    return ds;
   }
  }

  #endregion

  #region 执行带参数的SQL语句

  /// <summary>
  /// 执行SQL语句，返回影响的记录数
  /// </summary>
  /// <param name="SQLString">SQL语句</param>
  /// <returns>影响的记录数</returns>
  public static int ExecuteSql(string SQLString,params SqlParameter[] cmdParms)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    using (SqlCommand cmd = new SqlCommand())
    {
     try
     {
      PrepareCommand(cmd, connection, null,SQLString, cmdParms);
      int rows=cmd.ExecuteNonQuery();
      cmd.Parameters.Clear();
      return rows;
     }
     catch(System.Data.SqlClient.SqlException E)
     {
      throw new Exception(E.Message);
     }
    }
   }
  }

  /// <summary>
  /// 执行多条SQL语句，实现数据库事务。
  /// </summary>
  /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
  public static void ExecuteSqlTran(Hashtable SQLStringList)
  {
   using (SqlConnection conn = new SqlConnection(connectionString))
   {
    conn.Open();
    using (SqlTransaction trans = conn.BeginTransaction())
    {
     SqlCommand cmd = new SqlCommand();
     try
     {
      //循环
      foreach (DictionaryEntry myDE in SQLStringList)
      {
       string  cmdText=myDE.Key.ToString();
       SqlParameter[] cmdParms=(SqlParameter[])myDE.Value;
       PrepareCommand(cmd,conn,trans,cmdText, cmdParms);
       int val = cmd.ExecuteNonQuery();
       cmd.Parameters.Clear();

       trans.Commit();
      }
     }
     catch
     {
      trans.Rollback();
      throw;
     }
    }
   }
  }

  /// <summary>
  /// 执行一条计算查询结果语句，返回查询结果（object）。
  /// </summary>
  /// <param name="SQLString">计算查询结果语句</param>
  /// <returns>查询结果（object）</returns>
  public static object GetSingle(string SQLString,params SqlParameter[] cmdParms)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    using (SqlCommand cmd = new SqlCommand())
    {
     try
     {
      PrepareCommand(cmd, connection, null,SQLString, cmdParms);
      object obj = cmd.ExecuteScalar();
      cmd.Parameters.Clear();
      if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value)))
      {
       return null;
      }
      else
      {
       return obj;
      }
     }
     catch(System.Data.SqlClient.SqlException e)
     {
      throw new Exception(e.Message);
     }
    }
   }
  }

  /// <summary>
  /// 执行查询语句，返回SqlDataReader
  /// </summary>
  /// <param name="strSQL">查询语句</param>
  /// <returns>SqlDataReader</returns>
  public static SqlDataReader ExecuteReader(string SQLString,params SqlParameter[] cmdParms)
  {
   SqlConnection connection = new SqlConnection(connectionString);
   SqlCommand cmd = new SqlCommand();
   try
   {
    PrepareCommand(cmd, connection, null,SQLString, cmdParms);
    SqlDataReader myReader = cmd.ExecuteReader();
    cmd.Parameters.Clear();
    return myReader;
   }
   catch(System.Data.SqlClient.SqlException e)
   {
    throw new Exception(e.Message);
   }     

  }  

  /// <summary>
  /// 执行查询语句，返回DataSet
  /// </summary>
  /// <param name="SQLString">查询语句</param>
  /// <returns>DataSet</returns>
  public static DataSet Query(string SQLString,params SqlParameter[] cmdParms)
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    SqlCommand cmd = new SqlCommand();
    PrepareCommand(cmd, connection, null,SQLString, cmdParms);
    using( SqlDataAdapter da = new SqlDataAdapter(cmd) )
    {
     DataSet ds = new DataSet();
     try
     {
      da.Fill(ds,"ds");
      cmd.Parameters.Clear();
     }
     catch(System.Data.SqlClient.SqlException ex)
     {
      throw new Exception(ex.Message);
     }
     return ds;
    }
   }
  }

  private static void PrepareCommand(SqlCommand cmd,SqlConnection conn,SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
  {
   if (conn.State != ConnectionState.Open)
    conn.Open();
   cmd.Connection = conn;
   cmd.CommandText = cmdText;
   if (trans != null)
    cmd.Transaction = trans;
   cmd.CommandType = CommandType.Text;//cmdType;
   if (cmdParms != null)
   {
    foreach (SqlParameter parm in cmdParms)
     cmd.Parameters.Add(parm);
   }
  }

  #endregion

  #region 存储过程操作

  /// <summary>
  /// 执行存储过程
  /// </summary>
  /// <param name="storedProcName">存储过程名</param>
  /// <param name="parameters">存储过程参数</param>
  /// <returns>SqlDataReader</returns>
  public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters )
  {
   SqlConnection connection = new SqlConnection(connectionString);
   SqlDataReader returnReader;
   connection.Open();
   SqlCommand command = BuildQueryCommand( connection,storedProcName, parameters );
   command.CommandType = CommandType.StoredProcedure;
   returnReader = command.ExecuteReader();
   return returnReader;
  }

  /// <summary>
  /// 执行存储过程
  /// </summary>
  /// <param name="storedProcName">存储过程名</param>
  /// <param name="parameters">存储过程参数</param>
  /// <param name="tableName">DataSet结果中的表名</param>
  /// <returns>DataSet</returns>
  public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName )
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    DataSet dataSet = new DataSet();
    connection.Open();
    SqlDataAdapter sqlDA = new SqlDataAdapter();
    sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters );
    sqlDA.Fill( dataSet, tableName );
    connection.Close();
    return dataSet;
   }
  }

  /// <summary>
  /// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
  /// </summary>
  /// <param name="connection">数据库连接</param>
  /// <param name="storedProcName">存储过程名</param>
  /// <param name="parameters">存储过程参数</param>
  /// <returns>SqlCommand</returns>
  private static SqlCommand BuildQueryCommand(SqlConnection connection,string storedProcName, IDataParameter[] parameters)
  {
   SqlCommand command = new SqlCommand( storedProcName, connection );
   command.CommandType = CommandType.StoredProcedure;
   foreach (SqlParameter parameter in parameters)
   {
    command.Parameters.Add( parameter );
   }
   return command;
  }

  /// <summary>
  /// 执行存储过程，返回影响的行数
  /// </summary>
  /// <param name="storedProcName">存储过程名</param>
  /// <param name="parameters">存储过程参数</param>
  /// <param name="rowsAffected">影响的行数</param>
  /// <returns></returns>
  public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected )
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    int result;
    connection.Open();
    SqlCommand command = BuildIntCommand(connection,storedProcName, parameters );
    rowsAffected = command.ExecuteNonQuery();
    result = (int)command.Parameters["ReturnValue"].Value;
    //Connection.Close();
    return result;
   }
  }

  /// <summary>
  /// 创建 SqlCommand 对象实例(用来返回一个整数值)
  /// </summary>
  /// <param name="storedProcName">存储过程名</param>
  /// <param name="parameters">存储过程参数</param>
  /// <returns>SqlCommand 对象实例</returns>
  private static SqlCommand BuildIntCommand(SqlConnection connection,string storedProcName, IDataParameter[] parameters)
  {
   SqlCommand command = BuildQueryCommand(connection,storedProcName, parameters );
   command.Parameters.Add( new SqlParameter ( "ReturnValue",
    SqlDbType.Int,,ParameterDirection.ReturnValue,
    false,,,string.Empty,DataRowVersion.Default,null ));
   return command;
  }
  #endregion 

 }
}