IQueryBuilderExceptionHandler Interface

Enables you to handle server-side errors in the Web Query Builder.

Namespace: DevExpress.XtraReports.Web.QueryBuilder.Services

Assembly: DevExpress.XtraReports.v21.1.Web.dll


public interface IQueryBuilderExceptionHandler :


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.QueryBuilder.Services;

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

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

void Application_Start(object sender, EventArgs e) {
    // ...
        Register<IQueryBuilderExceptionHandler, CustomExceptionHandler>();
See Also