MVCxClientGlobalEvents.CallbackError Event
Fires on the client if any server error occurs during server-side processing of a callback sent by a DevExpress MVC extension.
Declaration
CallbackError: ASPxClientEvent<ASPxClientGlobalCallbackErrorEventHandler<MVCxClientGlobalEvents>>
Event Data
The CallbackError event's data class is ASPxClientGlobalCallbackErrorEventArgs. The following properties provide information specific to this event:
Property | Description |
---|---|
control | Gets an object that initiated a callback. |
handled | Gets or sets whether the event is handled and the default error handling actions are not required. Inherited from ASPxClientCallbackErrorEventArgs. |
message | Gets the error message that describes the server error that occurred. Inherited from ASPxClientCallbackErrorEventArgs. |
Remarks
The CallbackError event enables you to properly respond to a server error occurring as a result of a callback processed on the server side. You can handle this event to perform specific client-side actions, for example, displaying explanatory text or an image related to the error.
Typically, a server error which occurs during server-side processing of a callback, leads to web application hanging, because in this case, no proper response is generated for the DevExpress client object that initiated the callback. However, AJAX-enabled DevExpress MVC extensions are able to automatically catch server errors occurring during server-side processing, and to pass the related error information to the client for further processing through the CallbackError event’s argument.
See Handling Callback Exceptions on Client to learn more.