Gets or sets a value indicating whether the MenuItem, if checked, displays a radio-button instead of a check mark.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
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 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
Available since 1.1