ListItem.Enabled Property
Assembly: System.Web (in system.web.dll)
The Enabled property allows you to specify whether a ListItem control is enabled or disabled. A ListItem control that is disabled is dimmed to indicate that it cannot be selected. Use this property to disable a ListItem control in either a RadioButtonList control or a CheckBoxList control.
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| You cannot use this property to disable a ListItem control in a DropDownList control or ListBox control. |
The following example demonstrates how to use the Enabled property to programmatically disable list items in a RadioButtonList control. The first question asks the user to select the radio button that corresponds to the user's occupation. If the user indicates that he or she is not a developer, the list items in the second radio button list are disabled. The second question asks the user to select a primary programming language. This question is not relevant to a user that is not a developer.
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| The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Page Code Model. |
Reference
ListItem ClassListItem Members
System.Web.UI.WebControls Namespace
RadioButtonList
CheckBoxList
ListControl
ListBox
DropDownList
Other Resources
ListBox Web Server ControlRadioButton and RadioButtonList Web Server Controls Overview
CheckBox and CheckBoxList Web Server Controls
BulletedList Web Server Control
DropDownList Web Server Control
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