Restrict a Control's Acceptable Keystrokes

Restrict a Control's Acceptable Keystrokes Microsoft Corporation Overrides the default ProcessCmdKey function of a Windows Forms Control and restricts user input to numeric and navigation keys. formRestrict

System.Drawing.dll System.Windows.Forms.dll System.dll Microsoft.VisualBasic System.Drawing System.Windows.Forms System baseClass String Replace with the type of the class you want to restrict. ComboBox restrictedControlClass String The name of the derived class. 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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