#941 – Forcing Uppercase or Lowercase in a TextBox

If you want to limit a user to entering only uppercase or only lowercase in a particular TextBox, you can set the CharacterCasing property as follows:

  • Normal – Default setting, allows both uppercase and lowercase
  • Lower – Force all entered text to lowercase
  • Upper – Force all entered text to uppercase

This setting impacts text typed or pasted into the TextBox.  It does not convert text set through code or via data binding.

With CharacterCasing=”Lower”:


With CharacterCasing=”Upper”:




About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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