主题：[求助]如何提示Selec t 语句的错误？

如何提示Selec t 语句的错误？

在窗口文本框中输入SQL命令，查询按钮代码如下：

Dim text As WinForm.TextBox = e.Form.Controls("TextBox1")
Dim q As new QueryBuilder
q.TableName = "查询表"
q.C
q.SelectString = text.Value
q.Build
MainTable = Tables("查询表")

不行啊！

Dim text As WinForm.TextBox = e.Form.Controls("TextBox1")
Dim q As new QueryBuilder
try
    q.TableName = "查询表"
    q.C
    q.SelectString = text.Value
Catch ex As Exception
    MessageBox.Show(ex.Message)

    return
End try
q.Build
MainTable = Tables("查询表")