ASP.Net中使用VB.Net调用存储过程并得到返回值

ASP.Net中使用VB.Net调用存储过程并得到返回值
来源：qqread论坛 作者： 出处：巧巧读书 2006-08-03 进入讨论组
//存储过程代码
　CREATE PROCEDURE [AddNewInvoiceInfo] (@sUserID int,@sClaimMethod varchar(50),@sInvoiceNum 　varchar(50),@sInvoiceDate datetime,@sBuyCity varchar(50))AS
　Insert Into SMB_InvoiceInfo (MemberID,ClaimMethod,InvoiceNum,InvoiceDate,InvoiceCity) Values 　(@sUserID,@sClaimMethod,@sInvoiceNum,@sInvoiceDate,@sBuyCity)
　return  @@IDENTITY
　GO
//调用存储过程代码
　Dim CN As New SqlConnection()
　Dim InvoiceID As String
　Try
    CN.ConnectionString = DBConStr
    CN.Open()
    Dim CMD As SqlCommand
    CMD = New SqlCommand(AddNewInvoiceInfo, CN)
    CMD.CommandType = CommandType.StoredProcedure
    CMD.Parameters.Add(New SqlParameter(@sUserID, SqlDbType.Int))
    CMD.Parameters(@sUserID).Value = CInt(UserID.Text)
    CMD.Parameters.Add(New SqlParameter(@sClaimMethod, SqlDbType.VarChar, 50))
    CMD.Parameters(@sClaimMethod).Value = TransName.Text
    CMD.Parameters.Add(New SqlParameter(@sInvoiceNum, SqlDbType.VarChar, 50))
    CMD.Parameters(@sInvoiceNum).Value = InvoiceNum.Text
    CMD.Parameters.Add(New SqlParameter(@sInvoiceDate, SqlDbType.DateTime))
    CMD.Parameters(@sInvoiceDate).Value = InvoiceDate.SelectedDate.Date
    CMD.Parameters.Add(New SqlParameter(@sBuyCity, SqlDbType.VarChar, 50))
    CMD.Parameters(@sBuyCity).Value = BuyCity.Text
    CMD.Parameters.Add(New SqlParameter(@sInvoiceID, SqlDbType.Int))
    CMD.Parameters(@sInvoiceID).Direction = ParameterDirection.ReturnValue
    CMD.ExecuteNonQuery()
    InvoiceID = CMD.Parameters(@sInvoiceID).Value.ToString()
    CMD.Dispose()
　Catch ex As Exception
 &