[.NET] VS2005字串的問題
請輸入專案類型(網站專案或者應用程式專案)：
Public Const DefaultUseDB As String = "SQLServer"
他說這個字串可以連到資料庫
Public Const DefaultUseDB As String = ""
如果我把它改成空值
再設兩個按鈕
去各連兩個資料庫
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
Dim DefaultUseDB As String = "Access"
Catch ex As Exception
MessageBox.Show(ex.Message, "例外資訊")
End Try
End Sub
為什麼不能把那個字串加入到Public Const DefaultUseDB As String = ""
讓他的空值變成Public Const DefaultUseDB As String = "Access"
不好意思我是新手= ="多多包含
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