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OnPageBackgroundTaskError (Page) trigger

  • Artikkeli

Version: Available or changed with runtime version 4.0.

Runs when an error occurs in a page background task.

Syntax

trigger OnPageBackgroundTaskError(TaskId: Integer; ErrorCode: Text; ErrorText: Text; ErrorCallStack: Text; var IsHandled: Boolean)
begin
    ...
end;

Parameters

TaskId
 Type: Integer
Specifies the ID of the background task that was run.

ErrorCode
 Type: Text
Specifies the severity level of the error that occurred.

ErrorText
 Type: Text
Specifies the message that explains the error that occurred.

ErrorCallStack
 Type: Text
Specifies the call stack for the error that occurred.

IsHandled
 Type: Boolean
true indicates that the error has been handled; false indicates that it has not been handled.

Example

The following example modifies the OnPageBackgroundTaskError trigger to display a more user-friendly notification in the client when the error Could not parse parameter WaitParam or timeout occurs in the page background task. For more details about this example, see Page Background Tasks.

trigger OnPageBackgroundTaskError(TaskId: Integer; ErrorCode: Text; ErrorText: Text; ErrorCallStack: Text; var IsHandled: Boolean)
var
    PBTErrorNotification: Notification;
begin
    if (ErrorText = 'Could not parse parameter WaitParam') then begin
        IsHandled := true;
    PBTErrorNotification.Message('Something went wrong. The start and finish times have been updated.');
    PBTErrorNotification.Send();
    end
    
    else if (ErrorText = 'Child Session task was terminated because of a timeout.') then begin
        IsHandled := true;
        PBTErrorNotification.Message('It took to long to get results. Try again.');
        PBTErrorNotification.Send();
    end
end;

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OnPageBackgroundTaskError (Page Extension) Trigger