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AsyncPostBackTrigger.Initialize Method

Initializes the AsyncPostBackTrigger control and determines whether the event that is named in the trigger exists and is valid.

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

protected internal override void Initialize()

ExceptionCondition
InvalidOperationException

No ScriptManager control was found on the page.

- or -

The event that is named in the EventName property is not found for the control that is named in the ControlID property.

- or -

The event that is named in the EventName property for the control that is named in the ControlID property does not match a standard event handler signature.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

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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