Migrating MSChartObject to .NET 7 with FastReport

Learn how to replace the `MSChartObject` in your FastReport templates during the migration to .NET 7. Step-by-step instructions included!
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: FastReport MSChartObject migration from .NET Framework to .NET 7

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Migrating MSChartObject to .NET 7 with FastReport: A Step-by-Step Guide

As technology evolves, it's essential for developers to keep their projects up-to-date with the latest frameworks. One such migration challenge is transitioning from the .NET Framework to .NET 7, particularly when working with FastReport. A common issue arises when you encounter the deprecated MSChartObject, used in your reporting templates. This guide will guide you through the process of replacing MSChartObject with the appropriate options available in .NET 7.

Understanding the Problem

When migrating a project to .NET 7, users may discover that the FastReport library no longer supports MSChartObject, which can lead to issues when trying to load existing report templates (.rfx files) that still reference the old chart object.

Common Symptoms:

The report template fails to load due to references to MSChartObject.

Attempts to replace MSChartObject with Chart from System.Windows.Forms.DataVisualization.Charting do not resolve the issue.

The Solution

Here’s a comprehensive breakdown of what you need to do to successfully migrate and replace MSChartObject:

Step 1: Remove MSChartObject from Your Report Template

You must manually edit your .rfx files to remove all instances of MSChartObject. The XML could look something like this after removal:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Use the Correct Namespace

Rather than using System.Windows.Forms.DataVisualization.Charting, you should use the FastReport.DataVisualization.Charting namespace. This is crucial as it is designed to work with FastReport in .NET 7.

Step 3: Replace Chart Object Definitions

Within your C# code, replace the MSChartObject references with proper charting definitions from the new namespace. Ensure all necessary components like series, legends, and chart areas are also switched to their equivalents in the FastReport.DataVisualization.Charting.

Step 4: Convert Your Chart to an Image

Unfortunately, you cannot integrate the chart directly into a FastReport Report Page. A practical workaround is to convert your chart into an image and add it to the report page. The following sample code illustrates how to accomplish this:

[[See Video to Reveal this Text or Code Snippet]]

Step 5: Validate Your Changes

After making the replacements and adjustments, re-run your application and ensure that the FastReport successfully loads the modified report template without any reference errors.

Conclusion

Migrating FastReport from the .NET Framework to .NET 7 can present challenges, especially regarding outdated components like MSChartObject. By following this guide, removing references to MSChartObject, using the correct namespaces, and utilizing images for charts, you can make a smooth transition.

I hope this comprehensive solution assists anyone facing similar migration issues. Remember, you’re not alone in this journey; many developers encounter such challenges, and sharing knowledge is invaluable. If you find this information helpful, please share it with others struggling with the same migration task.