VB.NET下调用SQL Server存储过程的方法

Private 
 Function SqlProc1(ByVal ProcName As String) As Boolean
 
     
 ' 
 定义数据链接部分省略 
 , myConn 
 为链接对象 
  ProcName 
 为存储过程名
 
Dim myCommand As New
 
With
 
            .CommandType = CommandType.StoredProcedure
 
            .Parameters.Add("@CodeType", SqlDbType.VarChar, 20).Value = " 
 年级编码"
 
Try
 
                .ExecuteNonQuery()
 
Return
 
Catch ex As
 
Return
 
End Try
 
End 
 Function

Private 
 Function SqlProc1(ByVal ProcName As String) As String
 
     
 ' 
 定义数据链接部分省略 
 , 
  myConn 
 为链接对象
 
Dim myCommand As New
 
With
 
            .CommandType = CommandType.StoredProcedure
 
            .Parameters.Add("@CodeType", SqlDbType.VarChar, 20).Value = " 
 年级编码"
 
            .Parameters.Add("@NewCode", SqlDbType.VarChar, 20).Direction = ParameterDirection.Output
 
Try
 
                .ExecuteNonQuery()
 
Return
 
Catch ex As
 
Return 
 无编码生成"
 
End Try
 
End 
 Function

'VB.NET 
 代码
 
Private Function SqlProc2(ByVal ProcName As String, ByVal Param1 As String) As
 
' 
 定义命令对象，并使用储存过程
 
Dim myCommand As New
 
        myCommand.CommandType = CommandType.StoredProcedure
 
        myCommand.CommandText = ProcName
 
        myCommand.Connection = myConn
 
' 
 定义一个数据适配器，并设置参数
 
Dim myDapter As New
 
        myDapter.SelectCommand.Parameters.Add("@name", SqlDbType.VarChar, 20).Value = Param1
 
' 
 定义一个数据集对象，并填充数据集
 
Dim myDataSet As New
 
Try
 
            myDapter.Fill(myDataSet)
 
Catch ex As
 
End Try
 
Return
 
End 
 Function
 

    

 
' 
 存储过程代码
 
Create Proc Test @name varchar(20) As 
 
Select * From EC_Grade where cGradeName=@name
 
GO
 
*** 
 如果将存储过程修改部分内容,可以做为查询使用

CREATE Proc Test 


@name varchar(200)=''      


--       此处应该注意200为查询条件的长度,可以根据实际情况而定;但不建议用于过长的查询条件


As


Declare @sql1 varchar(8000)


if @name<>'' 


Select @sql1='Select * From EC_Grade where '+ @name


else


Select @sql1='Select * From EC_Grade'


exec(@sql1)


GO