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ScriptManager.IsInAsyncPostBack Property

Gets a value that indicates whether the current postback is being executed in partial-rendering mode.

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

public final function get IsInAsyncPostBack () : boolean

Property Value

Type: System.Boolean
true if the current postback is executing in partial-rendering mode; otherwise, false.

Use the IsInAsyncPostBack property in combination with the IsPostBack property to distinguish between the initial page load, a partial-page update, and a full-page update in Load, InitComplete, or PreRender events.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5

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