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IWebDocumentViewerExceptionHandler Interface

Enables you to handle server-side errors in the Web Document Viewer.

Namespace: DevExpress.XtraReports.Web.WebDocumentViewer

Assembly: DevExpress.XtraReports.v22.1.Web.dll


public interface IWebDocumentViewerExceptionHandler :


This interface is inherited from the base IExceptionHandler interface and exposes the GetExceptionMessage method that is called when any server-side error occurs.

The following code snippet demonstrates how to implement this method and return an actual exception message:

using System;
using DevExpress.XtraReports.Web.WebDocumentViewer;

public class CustomExceptionHandler : IWebDocumentViewerExceptionHandler {
    public string GetExceptionMessage(Exception ex) {
        return ex.Message;

To register the implemented exception handler, use the static DefaultWebDocumentViewerContainer.Register method at the application’s startup as shown below:

void Application_Start(object sender, EventArgs e) {
    \\ ...
        Register<IWebDocumentViewerExceptionHandler, CustomExceptionHandler>();

The WebDocumentViewerExceptionHandler class is the predefined implementation of the IWebDocumentViewerExceptionHandler interface.

See the following topics for more information:

See Also