Welcome to the WinForms feedback portal. We’re happy you’re here! If you have feedback on how to improve the WinForms, we’d love to hear it!

  • Check out the features or bugs others have reported and vote on your favorites. Feedback will be prioritized based on popularity.
  • If you have feedback that’s not listed yet, submit your own.

Thanks for joining our community and helping improve Syncfusion products!


While changing the format of the Cell in Spreadsheet, "NULL" exception is thrown especially when changing the format by Format Cells Window in Spreadsheet which doesn't have Ribbon UI. In actual case, it needs to be formatted properly.