Missing xlsx export option

3 posts, 0 answers
  1. Atipong
    Atipong avatar
    9 posts
    Member since:
    Dec 2018

    Posted 18 Feb 2019 Link to this post

    Good evening everyone.

    I'm trying to create new Web App then add 'Telerik Web Forms Report Viewer Forn R1 2019' to it.

    My problem is export option : it should have .xlsx, .docx and pptx

    Once I used R3 2018 , it work as I aspect

    I also attach image. export 2018 is what i use to do and what I expect and export 2019 is what i struck.

    PS. I'm not native English.

  2. Neli
    Neli avatar
    296 posts

    Posted 18 Feb 2019 Link to this post

    Hello Atipong,

    Check if you have all of the required references listed in the Open XML SDK for Microsoft Office. You may also need to add a binding redirect in the Web.config file of the application through a piece of code like (when using DocumentFormat.OpenXml version 2.5.5631.0) :

    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <assemblyIdentity name="DocumentFormat.OpenXml" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
        <bindingRedirect oldVersion="" newVersion="2.5.5631.0" />

    For more information, you can refer to Missing DOCX, XLSX, PPTX, XPS export options KB Article.

    Note also that there is a known issue with our latest official release ( described in the Telerik Reporting R1 2019 fails to load assembly DocumentFormat.OpenXml 2.7.2+ KB article.

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  3. Atipong
    Atipong avatar
    9 posts
    Member since:
    Dec 2018

    Posted 19 Feb 2019 in reply to Neli Link to this post

    Seem my problem is that issue. After I try using DocumentFormat.OpenXml 2.5.5631.0 with a binding redirect, things work as my expectation. Thank you Neli 
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