限制控件可接受的键击

限制控件可接受的键击 Microsoft Corporation 重写 Windows 窗体控件的默认 ProcessCmdKey 函数，并将用户输入限制为数字键和导航键。 formRestrict

System.Drawing.dll System.Windows.Forms.dll System.dll Microsoft.VisualBasic System.Drawing System.Windows.Forms System baseClass String 替换为要限制的类的类型。 ComboBox restrictedControlClass String 派生类的名称。 restrictedComboBoxClass

= Keys.D0 And keyData <= Keys.D9) _
                Or keyData = Keys.Back Or keyData = Keys.Left _
                Or keyData = Keys.Right Or keyData = Keys.Up _
                Or keyData = Keys.Down Or keyData = Keys.Delete
        End If
        Return MyBase.ProcessCmdKey(msg, keyData)
    End Function
End Class
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