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Page.IsCallback Property

Gets a value that indicates whether the page request is the result of a callback.

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

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

Property Value

Type: System.Boolean
true if the page request is the result of a callback; otherwise, false.

.NET Framework

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