C1TextBox.CharCategory = CharCategory.Symbol

C1TextBox.CharCategory = CharCategory.Symbol

Posted by: ivan.stanojkovski on 13 June 2025, 5:44 am EST

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  ivan.stanojkovski

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  Posted 13 June 2025, 5:44 am EST

  Hi,

  When using the C1TextBox control and I set it to only allow symbols, for example:
  
  C1TextBox.CharCategory = CharCategory.Symbol

  Why doesn’t it allow me to enter the minus sign “-”? It works fine for all other characters, except for the minus sign?

  Is there a way to configure it so that when CharCategory.Symbol is set, it also accepts the minus sign?

  Thank you in advance for your assistance!

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  kartik.dua

  

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  Posted 16 June 2025, 6:22 am EST

  Hi Ivan,

  We could observe that the CharCategory.Symbol does not allow the minus sign (“-”). However, you can easily work around this by handling the KeyDown event and manually appending the minus sign to the text.

  Please refer to the attached sample project - C1TextBoxSymbolCategory.zip

  Best Regards,
  
  Kartik