Question

通过VB.Net执行SQL Server存储过程存储过程正确执行并返回值。但是，通过VB.Net执行该程序时，其返回值是-1。

VB.NET的源代码

Dim cmdSPStagingToPROD As New SqlCommand
Dim cnStagingToPROD As SqlConnection
Dim SPResponse As String

cmdSPStagingToPROD.CommandType = CommandType.StoredProcedure

cmdSPStagingToPROD.Parameters.Add("@responseMessage", SqlDbType.NVarChar, 250)
cmdSPStagingToPROD.Parameters("@responseMessage").Direction = ParameterDirection.Output

cnStagingToPROD = New SqlConnection(ConnectionString)
cnStagingToPROD.Open()

cmdSPStagingToPROD.Connection = cnStagingToPROD

SPResponse = cmdSPStagingToPROD.ExecuteNonQuery()

If SPResponse = "Success" Then
    StagingToPROD = "Success"
Else
    StagingToPROD = "Error"
    ErrorText = "Staging to PROD error " & SPResponse
End If

期望SET @responseMessage ='成功'返回'成功'或'错误'

Answer 1

您将值分配给输出参数，以便在执行后获取该值，您需要阅读：

cmdSPStagingToPROD.Parameters("@responseMessage").Value.ToString()

当前，您得到-1，因为ExecuteNonQuery()返回了受影响的行数-但是当您SET NOCOUNT ON时，它不会被填充。

Answer 2

执行命令后，您需要读取输出参数@responseMessage。
这样：

cmdSPStagingToPROD.Execute()
SPResponse = cmdSPStagingToPROD.Parameters("@responseMessage").Value

SQL Server过程返回-1

2 个答案: