我想按一个键，把当前的字符删一个，8的acii 是退格。但参数类型不对，怎么改？
MyText_KeyPress(MyText, 8)

我想按一个键，把当前的字符删一个，8的acii 是退格。但参数类型不对，怎么改？

[解决办法]
Private Sub MyText_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim str As String = MyText.Text
MyText.Text = str.Substring(0, str.Length - 1)
End Sub