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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.

ExceptionCondition
InvalidOperationException

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: 4.6, 4.5, 4, 3.5
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