XLS rendering format is not available

[Yashaswini]

Hi Team,
I am currently supporting the .NET project [MVC] that uses Telerik.Reporting.R3.2017, HTML5ReportViewer[MVC], and .NET Framework 4.5.2 The user can get Telerik report in two ways.
1) The user can render the report [based on criteria] in the browser viewer and then use export option in the viewer to get "XLS" format. This works all fine.
2) Another way to get report is using RenderReport function of Telerik.Reporting Which created file at specific location.

When User run report in report viewer and Export to Excel (.xls) it works all fine. However, when RenderReport function of Telerik.Reporting [Which creates Excel(.xls) file at specific location], Application throws error of "XLS rendering format is not available"

Unfortunately, unable to get this work even after detailed investigation and going through same post on Telerik forum.

your assistance is much appreciated

Thanks,

[Ivet]

Hi Yashaswini,

Thank you for contacting Telerik Support.

Is the code for the RenderReport function in the same .NET Framework project or another? I cannot see a reason why it would if it is in the same project. However, if you have another project, that uses .NET Core, it would explain the error as XLS Rendering is not available there.

You can read more information about it here:

Features and Limitations

If you meant XLSX instead of XLS you can read more information here:

Missing Export Options in Viewers or Rendering Format Not Available

I hope this information helps. I will be glad to assist you further. If you need further assistance, consider sending a sample project with the issue.

Regards,
Ivet
Progress Telerik