Determines if the specified character is the mnemonic character assigned to the control in the specified string.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
'Declaration Public Shared Function IsMnemonic ( _ charCode As Char, _ text As String _ ) As Boolean
- Type: System.Char
The character to test.
- Type: System.String
The string to search.
Return ValueType: System.Boolean
true if the charCode character is the mnemonic character assigned to the control; otherwise, false.
The mnemonic character is the character immediately following the first instance of "&" in a String.
The following code example demonstrates an extension of the button class that overrides the ProcessMnemonic method to exhibit custom behavior. The example also demonstrates the use of the CanSelect and properties. To run this example paste the following code after a form class, in the same file. Add a button of type MnemonicButton to the form.
' This button is a simple extension of the button class that overrides ' the ProcessMnemonic method. If the mnemonic is correctly entered, ' the message box will appear and the click event will be raised. Public Class MyMnemonicButton Inherits Button ' This method makes sure the control is selectable and the ' mneumonic is correct before displaying the message box ' and triggering the click event. <System.Security.Permissions.UIPermission( _ System.Security.Permissions.SecurityAction.Demand, Window:=UIPermissionWindow.AllWindows)> _ Protected Overrides Function ProcessMnemonic( _ ByVal inputChar As Char) As Boolean If (CanSelect And IsMnemonic(inputChar, Me.Text)) Then MessageBox.Show("You've raised the click event " _ & "using the mnemonic.") Me.PerformClick() Return True End If Return False End Function End Class
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2