存储过程系列之存储过程sql数据库调用和程序代码调用

1、存储过程，无参数的存储过程

创建无参数存储存储过程

Create Procedure DCEMREMR_TEMPLATE
As
SELECT TOP 10 [FILENAME],[FILETITLE],[FILECONTENT] from [DCEMR].[dbo].[EMR_TEMPLATE];

调用无参数存储存储过程

sql 数据库中的额调用  exec DCEMREMR_TEMPLATE；

sql程序代码调用

//无参数存储过程
string connecting = "Data Source=localhost;Integrated Security=SSPI;Initial Catalog=DCEMR";
SqlConnection theConnect = new SqlConnection(connecting);
theConnect.Open();
SqlCommand theCommand = theConnect.CreateCommand();
theCommand.CommandText = "DCEMREMR_TEMPLATE";
theCommand.CommandType = CommandType.StoredProcedure;
SqlDataReader theReader = theCommand.ExecuteReader();
while (theReader.Read())
{
string xx = theReader.GetString(0).ToString();
}
theConnect.Close();

2、有参数存储过程，无返回值

创建有参数存储存储过程，无返回值

Go
Create Procedure DCEMREMRTEMPLATE100
@filename nvarchar(500)
As
SELECT [FILENAME],[FILETITLE],[FILECONTENT] from [DCEMR].[dbo].[EMR_TEMPLATE] where [FILEname]=@filename;

调用有参数存储过程，无返回值

sql 数据库中的额调用  exec DCEMREMRTEMPLATE100 ‘新建目录’；

sql程序代码调用

//有参数存储过程，无返回值
string connecting = "Data Source=localhost;Integrated Security=SSPI;Initial Catalog=DCEMR";
SqlConnection theConnect = new SqlConnection(connecting);
theConnect.Open();
SqlCommand theCommand = theConnect.CreateCommand();
theCommand.CommandText = "DCEMREMRTEMPLATE101";
theCommand.CommandType = CommandType.StoredProcedure;
theCommand.Parameters.Add("@filename",SqlDbType.NVarChar);
theCommand.Parameters["@filename"].Value = "新建目录";
SqlDataReader theReader = theCommand.ExecuteReader();
while (theReader.Read())
{
string xx = theReader.GetString(0).ToString();
}
theConnect.Close();

3、有参数存储过程，有返回值（参数@filename，返回参数@Rowcount）

创建有参数存储过程，有返回值

Go
Create Procedure DCEMREMRTEMPLATE101
@filename nvarchar(500),
@Rowcount int output
As
SELECT [FILENAME],[FILETITLE],[FILECONTENT] from [DCEMR].[dbo].[EMR_TEMPLATE] where [FILEname]=@filename
set @Rowcount=@Rowcount;

调用参数存储存储过程，有返回值

sql 数据库中的额调用  exec DCEMREMRTEMPLATE101 ‘新建目录’，2；

sql程序代码调用

//有参数存储过程
string connecting = "Data Source=localhost;Integrated Security=SSPI;Initial Catalog=DCEMR";
SqlConnection theConnect = new SqlConnection(connecting);
theConnect.Open();
SqlCommand theCommand = theConnect.CreateCommand();
theCommand.CommandText = "DCEMREMRTEMPLATE101";
theCommand.CommandType = CommandType.StoredProcedure;
theCommand.Parameters.Add("@filename",SqlDbType.NVarChar);
theCommand.Parameters["@filename"].Value = "新建目录";
theCommand.Parameters.Add("@Rowcount", SqlDbType.Int);
theCommand.Parameters["@Rowcount"].Direction = ParameterDirection.Output;
//theCommand.Parameters["@Rowcount"].Value = 2;

//theCommand.ExecuteNonQuery();
object ss = theCommand.ExecuteScalar();
//MessageBox.Show( theCommand.Parameters["@Rowcount"].Value.ToString());
SqlDataReader theReader = theCommand.ExecuteReader();
while (theReader.Read())
{
string xx = theReader.GetString(0).ToString();
}
theConnect.Close();