5 Answers, 1 is accepted
Hi,
You can export to XLSX but note that Microsoft Excel 2007 and above (OpenXML 2.0) require Third-Party Dependencies. Check the Deploying Open XML section.
Regards,
Neli
Progress Telerik

Hi,
Let me give you more details. To export to XLSX you need to add new references to the Silverlight project:
- Telerik.Reporting.OpenXmlRendering.dll and DocumentFormat.OpenXml.dll versions 2.0.5022.0 and 2.5.5631.0
OR
- Telerik.Reporting.OpenXmlRendering.2.7.2.dll and DocumentFormat.OpenXml.dll version 2.7.2.0 and later.
The DLLs can be fount at the installation folder of Telerik Reporting: C:\Program Files (x86)\Telerik\Reporting <Version>\Bin. Note that you don't need to add any dependencies sections.
Regards,
Neli
Progress Telerik

Hi Dear Neli
In my telerik reporting for silverlight Bin directory I see Telerik.Reporting.OpenXmlRendering.dll only. and Only reference is referencing to this dll. DocumentFormat.OpenXml.dll or Telerik.Reporting.OpenXmlRendering.2.7.2.dll or DocumentFormat.OpenXml.dll version 2.7.2.0 are not exist !. Q1 : Is any places for direct downloading of Telerik.Reporting.OpenXmlRendering.2.7.2.dll and DocumentFormat.OpenXml.dll version 2.7.2.0 ? Q2: If references to these dlls does work in telerik reporting r3 2016 ? I am very appreciated for your reply.
Hello,
You can find DocumentFormat.OpenXml.dll in C:\Program Files (x86)\Telerik\Reporting R3 2016\Examples\bin.
Note that Telerik.Reporting.OpenXmlRendering.2.7.2.dll and DocumentFormat.OpenXml.dll version 2.7.2.0 can be found in the installation folder of later versions of Telerik Reporting. In Telerik Reporting R3 2016, probably using these two assemblies will not work because of the issue described in Telerik Reporting R1 2019 fails to load assembly DocumentFormat.OpenXml 2.7.2+ KB article.
Regards,
Neli
Progress Telerik