C#开发的高性能EXCEL导入、导出工具DataPie（支持MSSQL、ORACLE、ACCESS，附源码下载地址）[转]

转自：http://www.cnblogs.com/yfl8910/archive/2012/05/19/2509194.html

作为财务数据核算人员，面对大量的业务与财务数据，借助于传统的EXCEL表格，已经力不从心。最近几个月，利用周末及下班的空闲时间，写了一个数据库导入导出工具，以方便业务逻辑密集型的数据处理。目前，DataPie支持百万级别的数据导出，对于几十万的数据导入，也轻松应付。

源码及安装包下载地址：https://github.com/yfl8910/DataPie

先看看界面，登录界面：

主界面：

主要代码：

1.把excel文件读到DataTable

        ///<summary>
 
        ///根据excel路径和sheet名称，返回excel的DataTable
 
        ///</summary>
 
        public static DataTable GetExcelDataTable(string path, string tname)
 
        {
 
            /*Office 2007*/
 
            string ace = "Microsoft.ACE.OLEDB.12.0";
 
            /*Office 97 - 2003*/
 
            string jet = "Microsoft.Jet.OLEDB.4.0";
 
            string xl2007 = "Excel 12.0 Xml";
 
            string xl2003 = "Excel 8.0";
 
            string imex = "IMEX=1";
 
            /* csv */
 
            string text = "text";
 
            string fmt = "FMT=Delimited";
 
            string hdr = "Yes";
 
            string conn = "Provider={0};Data Source={1};Extended Properties=\"{2};HDR={3};{4}\";";
 
            string select = string.Format("SELECT * FROM [{0}$]", tname);
 
            //string select = sql;
 
            string ext = Path.GetExtension(path);
 
            OleDbDataAdapter oda;
 
            DataTable dt = new DataTable("data");
 
            switch (ext.ToLower())
 
            {
 
                case ".xlsx":
 
                    conn = String.Format(conn, ace, Path.GetFullPath(path), xl2007, hdr, imex);
 
                    break;
 
                case ".xls":
 
                    conn = String.Format(conn, jet, Path.GetFullPath(path), xl2003, hdr, imex);
 
                    break;
 
                case ".csv":
 
                    conn = String.Format(conn, jet, Path.GetDirectoryName(path), text, hdr, fmt);
 
                    //sheet = Path.GetFileName(path);
 
                    break;
 
                default:
 
                    throw new Exception("File Not Supported!");
 
            }
 
            OleDbConnection con = new OleDbConnection(conn);
 
            con.Open();
 
            //select = string.Format(select, sql);
 
            oda = new OleDbDataAdapter(select, con);
 
            oda.Fill(dt);
 
            con.Close();
 
            return dt;
 
        }

2.批量把数据导入到数据库

1）SQL SERVER版本

public bool SqlBulkCopyImport(IList<string> maplist, string TableName, DataTable dt)
 
        {
 
            using (SqlConnection connection = new SqlConnection(connectionString))
 
            {
 
                connection.Open();
 
                using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection))
 
                {
 
                    bulkCopy.DestinationTableName = TableName;
 
                    foreach (string a in maplist)
 
                    {
 
                        bulkCopy.ColumnMappings.Add(a, a);
 
                    }
 
                    try
 
                    {
 
                        bulkCopy.WriteToServer(dt);
 
                        return true;
 
                    }
 
                    catch (Exception e)
 
                    {
 
                        throw e;
 
                    }
 
                }
 
            }
 
        }

2）oracle版本

public bool SqlBulkCopyImport(IList<string> maplist, string TableName, DataTable dt)
 
        {
 
            using (OracleConnection connection = new OracleConnection(connectionString))
 
            {
 
                connection.Open();
 
                using (OracleBulkCopy bulkCopy = new OracleBulkCopy(connection))
 
                {
 
                    bulkCopy.DestinationTableName = TableName;
 
                    foreach (string a in maplist)
 
                    {
 
                        bulkCopy.ColumnMappings.Add(a, a);
 
                    }
 
                    try
 
                    {
 
                        bulkCopy.WriteToServer(dt);
 
                        return true;
 
                    }
 
                    catch (Exception e)
 
                    {
 
                        throw e;
 
                    }
 
                }
 
            }
 
        }

3）ACCESS版本

public bool SqlBulkCopyImport(IList<string> maplist, string TableName, DataTable dt)
 
        {
 
            try
 
            {
 
                using (OleDbConnection connection = new OleDbConnection(connectionString))
 
                {
 
                    connection.Open();
 
                    OleDbDataAdapter adapter = new OleDbDataAdapter("select * from " + TableName + "  where 1=0", connection);
 
                    OleDbCommandBuilder builder = new OleDbCommandBuilder(adapter);
 
                    int rowcount = dt.Rows.Count;
 
                    for (int n = ; n < rowcount; n++)
 
                    {
 
                        dt.Rows[n].SetAdded();
 
                    }
 
                    //adapter.UpdateBatchSize = 1000;
 
                    adapter.Update(dt);
 
                }
 
                return true;
 
            }
 
            catch (Exception e)
 
            {
 
                throw e;
 
            }
 
        }

3．导出EXCEL文件

///<summary>
 
        ///保存excel文件，覆盖相同文件名的文件
 
        ///</summary>
 
        public static bool SaveExcel(string SheetName, DataTable dt, ExcelPackage package)
 
        {
 
            try
 
            {              
 
                ExcelWorksheet ws = package.Workbook.Worksheets.Add(SheetName);
 
                ws.Cells["A1"].LoadFromDataTable(dt, true);
 
                return true;
 
            }
 
            catch (Exception ex)
 
            {
 
                throw ex;
 
            }
 
        }
 
        ///<summary>
 
        ///多个表格导出到一个excel工作簿
 
        ///</summary>
 
        public static void export(IList<string> SheetNames, string filename, DBConfig db, IList<string> sqls)
 
        {
 
            DataTable dt = new DataTable();
 
            FileInfo newFile = new FileInfo(filename);
 
            if (newFile.Exists)
 
            {
 
                newFile.Delete();
 
                newFile = new FileInfo(filename);
 
            }
 
            using (ExcelPackage package = new ExcelPackage(newFile))
 
            {
 
                for (int i = ; i < sqls.Count; i++)
 
                {
 
                    dt = db.DB.ReturnDataTable(sqls[i]);
 
                    SaveExcel(SheetNames[i], dt, package);
 
                }
 
                package.Save();
 
            }
 
        }
 
        ///<summary>
 
        ///单个表格导出到一个excel工作簿
 
        ///</summary>
 
        public static void export(string SheetName, string filename, DBConfig db, string sql)
 
        {
 
            DataTable dt = new DataTable();
 
            FileInfo newFile = new FileInfo(filename);
 
            if (newFile.Exists)
 
            {
 
                newFile.Delete();
 
                newFile = new FileInfo(filename);
 
            }
 
            using (ExcelPackage package = new ExcelPackage(newFile))
 
            {
 
                dt = db.DB.ReturnDataTable(sql);
 
                SaveExcel(SheetName, dt, package);
 
                package.Save();
 
            }
 
        }
 
        ///<summary>
 
        ///单个表导出到多个excel工作簿（分页）
 
        ///</summary>
 
        public static void export(string SheetName, string filename, DBConfig db, string sql, int num, int pagesize)
 
        {
 
            DataTable dt = new DataTable();
 
            FileInfo newFile = new FileInfo(filename);
 
            int numtb = num / pagesize + ;
 
            for (int i = ; i <= numtb; i++)
 
            {
 
                string s = filename.Substring(, filename.LastIndexOf("."));
 
                StringBuilder newfileName = new StringBuilder(s);
 
                newfileName.Append(i + ".xlsx");
 
                newFile = new FileInfo(newfileName.ToString());
 
                if (newFile.Exists)
 
                {
 
                    newFile.Delete();
 
                    newFile = new FileInfo(newfileName.ToString());
 
                }
 
                using (ExcelPackage package = new ExcelPackage(newFile))
 
                {
 
                    dt = db.DB.ReturnDataTable(sql, pagesize * (i - ), pagesize);
 
                    SaveExcel(SheetName, dt, package);
 
                    package.Save();
 
                }
 
            }
 
        }

4.DataPie下载地址

https://github.com/yfl8910/DataPie