小编Jos*_*ph 的帖子

我的连接字符串可能会出现什么问题.它报告cnn未声明.

        Dim cnn As New OleDbConnection
        If rdbtnNewDbase.Checked = True Then
             Dim cnn As new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Persist Security Info=false; Data Source=..\HCHPClosedIn11.mdb")
        ElseIf rdbtnOldDbase.Checked = True Then
            Dim cnn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Persist Security Info=false; Data Source=..\HCHPold.mdb")
        End If