ScriptManager.AllowCustomErrorsRedirect Property
Gets or sets a value that determines whether the custom errors section of the Web.config file is used during an error in an asynchronous postback.
Namespace: System.Web.UI
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
<asp:ScriptManager AllowCustomErrorsRedirect="True|False" />
Property Value
Type: System.Booleantrue if the custom errors setting in the Web.config file is used to determine error behavior during asynchronous postbacks; otherwise, false. The default is true.
The AsyncPostBackError event is raised when there is a page error during asynchronous postbacks. How errors on the server are sent to the client depends on the AllowCustomErrorsRedirect property, the AsyncPostBackErrorMessage property, and the custom errors section of the Web.config file.
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.