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IsCrossPagePostBack Property
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Page.IsCrossPagePostBack Property

Gets a value indicating whether the page is involved in a cross-page postback.

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

[BrowsableAttribute(false)]
public bool IsCrossPagePostBack { get; }

Property Value

Type: System.Boolean
true if the page is participating in a cross-page request; otherwise, false.

ASP.NET provides two mechanisms for transferring control from one page to another. You can use the Transfer method to transfer processing between pages, or you can make a cross-page request by assigning a page URL to the PostBackUrl property of a button control that implements the IButtonControl interface.

In either case, the PreviousPage page property will contain an object that represents the previous or originator page. If, for example, Page A posts to Page B, Page A's IsCrossPagePostBack property (accessible through the PreviousPage property) will be true and Page B's PreviousPage property will have the name of Page A.

TopicLocation
How to: Determine How ASP.NET Web Pages Were InvokedBuilding ASP .NET Web Applications
How to: Determine How ASP.NET Web Pages Were InvokedBuilding ASP .NET Web Applications

.NET Framework

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