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MenuItem.RadioCheck Property

Gets or sets a value indicating whether the MenuItem, if checked, displays a radio-button instead of a check mark.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

'Declaration
Public Property RadioCheck As Boolean
'Usage
Dim instance As MenuItem
Dim value As Boolean

value = instance.RadioCheck

instance.RadioCheck = value
/** @property */
public boolean get_RadioCheck ()

/** @property */
public void set_RadioCheck (boolean value)

public function get RadioCheck () : boolean

public function set RadioCheck (value : boolean)

Not applicable.

Property Value

true if a radio-button is to be used instead of a check mark; false if the standard check mark is to be displayed when the menu item is checked. The default is false.

Check marks do not necessarily imply a mutually exclusive state for a group of menu items. You can use this property to indicate to the user that the check mark of a menu item is mutually exclusive.

The following code example uses the Checked property to change the state of an application. In the example, a group of menu items are provided that are used to specify the color for the text in an TextBox control. In the example, the event handler provided is used by the Click event of the three menu items. Each menu item specifies a color, menuItemRed, menuItemGreen, or menuItemBlue. The event handler determines which menu item was clicked, places a checkmark to the selected menu item, and changes the text color of the form's TextBox control, named textBox1. The example also uses the RadioCheck property to demonstrate how a radio-button check is used to show menu items that are mutually exclusive. This example requires that the System.Drawing namespace has been added to the form that contains this code.

' This method is called from the constructor of the form to set up the menu
' items.
Public Sub ConfigureMyMenus()
    ' Set all of these menu items to Radio-Button check marks so the user
    ' can see that only one color can be selected at a time. 
    menuItemRed.RadioCheck = True
    menuItemBlue.RadioCheck = True
    menuItemGreen.RadioCheck = True
End Sub    

' The following event handler would be connected to three menu items.
Private Sub MyMenuClick(sender As Object, e As EventArgs)
    If sender Is menuItemBlue Then
        ' Set the checkmark for the menuItemBlue menu item.
        menuItemBlue.Checked = True
        ' Uncheck the menuItemRed and menuItemGreen menu items.
        menuItemRed.Checked = False
        menuItemGreen.Checked = False
        ' Set the color of the text in the TextBox control to Blue.
        textBox1.ForeColor = Color.Blue
    Else
        If sender Is menuItemRed Then
            ' Set the checkmark for the menuItemRed menu item.
            menuItemRed.Checked = True
            ' Uncheck the menuItemBlue and menuItemGreen menu items.
            menuItemBlue.Checked = False
            menuItemGreen.Checked = False
            ' Set the color of the text in the TextBox control to Red.
            textBox1.ForeColor = Color.Red
        Else
            ' Set the checkmark for the menuItemGreen menu item.
            menuItemGreen.Checked = True
            ' Uncheck the menuItemRed and menuItemGreen menu items.
            menuItemBlue.Checked = False
            menuItemRed.Checked = False
            ' Set the color of the text in the TextBox control to Blue.
            textBox1.ForeColor = Color.Green
        End If
    End If
End Sub


// This method is called from the constructor of the form
// to set up the menu items.
public void ConfigureMyMenus()
{
    /* Set all of these menu items to Radio-Button check marks so 
       the user can see that only one color can be selected at a time.
     */
    menuItemRed.set_RadioCheck(true);
    menuItemBlue.set_RadioCheck(true);
    menuItemGreen.set_RadioCheck(true);
} //ConfigureMyMenus

// The following event handler would be connected to three menu items.
private void MyMenuClick(Object sender, EventArgs e)
{
    if (sender.Equals(menuItemBlue)) {
    
        // Set the checkmark for the menuItemBlue menu item.
        menuItemBlue.set_Checked(true);

        // Uncheck the menuItemRed and menuItemGreen menu items.
        menuItemRed.set_Checked(false);
        menuItemGreen.set_Checked(false);

        // Set the color of the text in the TextBox control to Blue.
        textBox1.set_ForeColor(Color.get_Blue());
    }
    else {
            if (sender.Equals(menuItemRed)) {
        
                // Set the checkmark for the menuItemRed menu item.
                menuItemRed.set_Checked(true);

                // Uncheck the menuItemBlue and menuItemGreen menu items.
                menuItemBlue.set_Checked(false);
                menuItemGreen.set_Checked(false);

                // Set the color of the text in the TextBox control to Red.
                textBox1.set_ForeColor(Color.get_Red());
            }
            else {            
                // Set the checkmark for the menuItemGreen menu item.
                menuItemGreen.set_Checked(true);

                // Uncheck the menuItemRed and menuItemGreen menu items.
                menuItemBlue.set_Checked(false);
                menuItemRed.set_Checked(false);

                // Set the color of the text in the TextBox
                // control to Blue.
                textBox1.set_ForeColor(Color.get_Green());
            }
    }
} //MyMenuClick 

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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