Report validation feature in FastReport .NET and Mono

2022-09-01

The "Validation" window has been added to the FastReport .NET designer and FastReport Mono, which will display errors and warnings.

Warning  Warning - Unwanted object configuration that may cause some graphical errors when exported or previewed.

Errors Errors - The object configuration will result in export errors or blocking when trying to build a report.

Now the report is being checked for basic errors that occur during the creation of report templates:

1. Intersecting objects.
2. Objects that are partially or completely beyond the parent object.
3. Objects with zero height and width
4. Objects without name (property Name = "").
5. Objects with the same name.

"Validation" window.

To open the "Validation" window, go to the "View" tab, click on the "Panels" button and select "Validation" in the appearing list.

How to open the "Validation" window.

When you click on a line with an error in the "Validation" window, the object related to this error will be highlighted in the designer.

With the “Validation” window, users can easily find errors and omissions in their reports and avoid errors in exported documents or problems during the preview.

.NET Mono FastReport
September 21, 2026

How to Configure an AI Agent for FastReport .NET: Architecture, Limitations, and Report Migration

AI feature for FastReport .NET: automated migration of reports from Crystal Reports and StimulSoft, refactoring for .NET 8/9, template generation, and protection against data leaks.
September 08, 2026

Answers to Frequently Asked Questions about the FP3 Format

We'll break down 11 common questions about the FP3 format: what these files are, how they differ from FR3 files, which programs can open them, and how to convert them to PDF.
September 04, 2026

How to export a report from FastReport .NET to DXF

In this article, we will consider methods of exporting a report to the DXF format, and also see what the resulting output looks like after opening the file in a CAD application.

© 1998-2026 Fast Reports Inc.