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DataList.HeaderTemplate Property

Gets or sets the template for the heading section of the DataList control.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

[<BrowsableAttribute(false)>]
[<PersistenceModeAttribute(PersistenceMode.InnerProperty)>]
[<TemplateContainerAttribute(typeof(DataListItem))>]
abstract HeaderTemplate : ITemplate with get, set
[<BrowsableAttribute(false)>]
[<PersistenceModeAttribute(PersistenceMode.InnerProperty)>]
[<TemplateContainerAttribute(typeof(DataListItem))>]
override HeaderTemplate : ITemplate with get, set
<asp:DataList>
	<HeaderTemplate>ITemplate</HeaderTemplate>
</asp:DataList>

Property Value

Type: System.Web.UI.ITemplate
A System.Web.UI.ITemplate that contains the template for the heading section of the DataList control. The default value is a null reference (Nothing in Visual Basic).

Use the HeaderTemplate property to control the contents of the heading section. The appearance of the header section is controlled by the HeaderStyle property.

NoteNote

The ShowHeader property must be set to true for this property to be visible.

To specify a template for the heading section, place the <HeaderTemplate> tags between the opening and closing tags of the DataList control. You can then list the contents of the template between the opening and closing <HeaderTemplate> tags.

Caution noteCaution

This control can be used to display user input, which might include malicious client script. Check any information that is sent from a client for executable script, SQL statements, or other code before displaying it in your application. You can use validation controls to verify user input before displaying the input text in a control. ASP.NET provides an input request validation feature to block script and HTML in user input. For more information, see Securing Standard ControlsHow to: Protect Against Script Exploits in a Web Application by Applying HTML Encoding to Strings, and Validating User Input in ASP.NET Web Pages.

TopicLocation
How to: Create ASP.NET Web Control Templates DeclarativelyBuilding ASP .NET Web Applications
How to: Create ASP.NET Web Server Control TemplatesBuilding ASP .NET Web Applications
How to: Create ASP.NET Web Control Templates DeclarativelyBuilding ASP .NET Web Applications

The following code example demonstrates how to use the HeaderTemplate property to control the contents of the heading section of the DataList control.

NoteNote

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 Forms Page Code Model.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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