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UpdatePanel.Controls Property

Gets the ControlCollection object that contains the child controls for the UpdatePanel control.

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

public override sealed ControlCollection Controls { get; }

Property Value

Type: System.Web.UI.ControlCollection
The collection of child controls for the UpdatePanel control.


The Add, AddAt, Clear, Remove, or RemoveAt method of the ControlCollection class has been called. To change the content of the UpdatePanel control, modify the child controls of the ContentTemplateContainer property.

The Controls property is overridden from the base Control class and sealed to prevent additional derivation. To add controls to the UpdatePanel control declaratively, create a <ContentTemplate> element inside the UpdatePanel control markup. To add controls to the UpdatePanel control programmatically, use the ContentTemplateContainer property.

.NET Framework

Supported in: 4, 3.5

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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