这是我执行更新的存储过程,当我使用SQL Server测试过程时,它可以很好地工作。
ALTER PROCEDURE [TKSFlex].[UpdateComment]
-- Add the parameters for the stored procedure here
@Comment char(50),
@Employee char(25)
AS
BEGIN TRANSACTION
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT On;
-- Insert statements for procedure here
Update whiteboard set Comment = @Comment
where Employee = @Employee
COMMIT
以下是单击更新按钮时执行的代码
Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal es System.EventArgs) Handles btnUpdate.Click
InputsModule.Employee = "'Mathe BF'"
Objconn.Open()
dbcommand.Connection = Objconn
dbcommand.CommandType = CommandType.StoredProcedure
dbcommand.CommandText = "[TKSFlex].[UpdateComment]"
dbcommand.Parameters.AddWithValue("@Comment", txtComment.Text)
dbcommand.Parameters.AddWithValue("@Employee", InputsModule.Employee)
'dbcommand.Parameters.Add("@Comment", SqlDbType.Char).Value = txtComment.Text
'dbcommand.Parameters.Add("@Employee", SqlDbType.Char).Value = InputsModule.Employee
Dim i As Integer = 0
Try
i = dbcommand.ExecuteNonQuery()
Catch ex As SqlException
MsgBox("failed")
End Try
Objconn.Close()
End Sub
当执行查询并且没有抛出异常时,表没有得到更新,这意味着代码确实被执行但没有对数据库进行修改,我只是不确定我在哪里出了问题
答案 0 :(得分:2)
最合乎逻辑的原因是:
InputsModule.Employee = "'Mathe BF'"
应该是:
InputsModule.Employee = "Mathe BF"
ADO.NET将为您引用该参数。手动设置引号将导致搜索引号-bhe-quote,这可能不存在:)
答案 1 :(得分:0)
对于带值的add,需要指定参数的类型,如下面的代码所示。
SqlParameter parameter = command.Parameters.AddWithValue("paramName", value);
parameter.SqlDbType = SqlDbType.Int;