SharpDevelop 4.4 KeyPress 事件文本框

如何解决SharpDevelop 4.4 KeyPress 事件文本框

我正在使用sharpdevelop 4.4在python应用程序上编写windows窗体我想知道如何使用Keypress以便用户只需在我使用VB.NET的文本框中输入数字代码如下

dim Number() As Char = {"0","1","2","3","4","5","6","7","8","9"}

If Not Number.Contains(e.KeyChar) Then
    e.Handled = True
End If

在 Python SharpDevlop 4.4 中

    def TextBox1KeyPress(self,sender,e):
    var = ["0","9"]
    if not e.KeyChar == var:
        #e.handled = true
        print"presed"
    
    pass

帮帮我，我是 Python 的初学者