AsyncPostBackErrorMessage Property

ScriptManager.AsyncPostBackErrorMessage Property

Gets or sets the error message that is sent to the client when an unhandled server exception occurs during an asynchronous postback.

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

member AsyncPostBackErrorMessage : string with get, set

Property Value

Type: System.String
The error message. The default is an empty string ("").

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.

The following example shows how to handle the AsyncPostBackError event to set the AsyncPostBackErrorMessage property (which is sent to the client) to the server exception error message.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5
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