Preventing Invalid Characters

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  1. Brad
    Brad avatar
    35 posts
    Member since:
    Feb 2006

    Posted 09 Mar 2015 Link to this post

    Good Evening:

    We're having trouble with users attempting file uploads with invalid characters such as periods and parenthesis that crash the upload process.  Can anyone suggest a good client-side technique for warning the users before they initiate the upload? 


  2. Boyan Dimitrov
    Boyan Dimitrov avatar
    1728 posts

    Posted 12 Mar 2015 Link to this post

    Hello Brad,

    In the ticket information you checked RadUpload control. Please note that RadUpload has been replaced by RadAsyncUpload, Telerik’s next-generation ASP.NET upload component. If you are already using RadUpload in your projects, you may be interested in reading how easy the transition to RadAsyncUpload is and how you can benefit from it in this blog post.

    If using the RadUpload control is critical for you please review RadUpload get File Name on Client. 

    If you are using RadAsyncUpload please take a look at Client-Side file size validation in RadAsyncUpload resource. 

    Boyan Dimitrov

    Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.

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