vb.net - 表达不是方法VS2010

Question

我从以下代码中收到错误“表达式不是 VS2010 方法”：

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    conn.ConnectionString = connstring

    If Not conn.State = ConnectionState.Open Then
        *ConnectionState*.Open()

        MsgBox("open")
    Else
        MsgBox("close")
    End If
End Sub

Answer 1

那应该是conn.Open：

If Not conn.State = ConnectionState.Open Then
    conn.Open()
    MsgBox("open")
Else
    MsgBox("close")
End If

ConnectionState是一个枚举，而不是一个变量。