Custom Parameter Editors Stopped Working in Progress Telerik Reporting Version 19.1.25.521

Environment

Product	Progress® Telerik® Reporting
Version	19.1.25.521

Description

After upgrading to version 19.1.25.521, parameter editors implemented for the HTML5 Report Viewer no longer appear as intended. The underlying code is not executed, causing the parameter editors to revert to the default implementation.

Cause

The issue is caused by changes introduced in version 19.1.25.521 of Telerik Reporting. These changes were made to ensure compatibility with Kendo UI Sass themes, but they inadvertently affected the rendering of custom parameter editors.

Solution

To resolve this issue, modify the telerikReportViewer-19.1.25.521.js file to include your custom parameter editor implementation. Follow these steps:

1. Locate and copy the JavaScript file

   Find the telerikReportViewer-19.1.25.521.js file in the installation directory:

   C:\Program Files (x86)\Progress\Telerik Reporting R3 2025\Html5\ReportViewer\js\telerikReportViewer-19.1.25.521.js

   Copy this file to your project's directory.

2. Find the ParameterEditors array

   Open the copied file and search for the ParameterEditors array definition.

3. Customize the editor logic

   Choose one of the following approaches based on your requirements:

   Option A: Override an existing editor type

   If you want to override the editor for a specific type (e.g., DateTime), locate the existing entry (for example, the entry with match: parameterEditorsMatch.DateTime) and replace the createEditor function with your own implementation:

   var ParameterEditors = [
      // ...existing editors...
      {
          match: parameterEditorsMatch.DateTime,
          createEditor: createCustomEditor
      },
      // ...remaining editors...
   ];
   

   Option B: Add a new custom editor

   If you want to use your own matching logic, add a new entry to the end of the ParameterEditors array:

   var ParameterEditors = [
      // ...existing editors...
      {
          match: customMatch,
          createEditor: createCustomEditor
      }
   ];
   

4. Update your project references

   Replace the reference to the original telerikReportViewer-19.1.25.521.js/telerikReportViewer-19.1.25.521.min.js file with the path to your modified version.

5. Test the implementation

   Test the implementation to verify that the custom parameter editor renders correctly and functions as expected.