ASP.NET DropDownList Control
 Complete Web Control Reference
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.
Examples
DropdownList
In this example we declare one DropDownList
control in an .aspx file. Then we create an event handler for the Click event which displays some text
and the selected item, in a Label control.
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