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ASP.NET ExamplesASP.NET DropDownList Control
Web Server Controls
Definition and Usage
The DropDownList control is used to create a drop-down list.
Each selectable item in a DropDownList control is defined by a ListItem element!
Tip: This control supports data binding!
Properties
| Property | Description | .NET |
|---|---|---|
| SelectedIndex | The index of a selected item | 1.0 |
| OnSelectedIndexChanged | The name of the function to be executed when the index of the selected item has changed | 1.0 |
| runat | Specifies that the control is a server control. Must be set to "server" | 1.0 |
ListControl Standard Properties
AppendDataBoundItems, AutoPostBack, CausesValidation,
DataTextField, DataTextFormatString, DataValueField, Items, runat,
SelectedIndex, SelectedItem, SelectedValue, TagKey, Text,
ValidationGroup, OnSelectedIndexChanged
The ListControl control covers all the base functions for list controls. Controls that inherits from this control include the CheckBoxList, DropDownList, ListBox, and RadioButtonList controls.
For a full description, go to ListControl Standard Attributes.
Web Control Standard Properties
AccessKey, Attributes, BackColor, BorderColor,
BorderStyle, BorderWidth, CssClass, Enabled, Font, EnableTheming,
ForeColor, Height, IsEnabled, SkinID, Style, TabIndex, ToolTip, Width
For a full description, go to Web Control Standard Attributes.
Control Standard Properties
AppRelativeTemplateSourceDirectory, BindingContainer,
ClientID, Controls, EnableTheming, EnableViewState, ID, NamingContainer,
Page, Parent, Site, TemplateControl, TemplateSourceDirectory, UniqueID,
Visible
For a full description, go to Control Standard Attributes.
Example
DropdownList
Declare one DropDownList control in an .aspx file. Then create an event handler for the Click event which displays some text and the selected item, in a Label control.
Web Server Controls
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Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.