CODEWITHSUNDEEP
wpf
Leangseng Soeun
Leangseng Soeun

Reputation: 11

Create WPF TextBox that accepts only Text

private void txtLastName_PreviewKeyDown(object sender, KeyEventArgs e)
    {
        if (!char.IsDigit((char)e.Key)) e.Handled = true;
    }

But It not support all key in keyboard .

Upvotes: 1

Views: 6346

Answers (3)

Szomti
Szomti

Reputation: 57

This thread is really old, but if someone still needs it, here is code that is working for me

(Edited a little bit Usman's code)

private void TextValidationTextBox(object sender, TextCompositionEventArgs e)
{
      Regex regex = new Regex("[^a-zA-Z]+");
      e.Handled = regex.IsMatch(e.Text);
}

And don't forget to put code below to TextBox that you want to accept only text ( in xaml )

PreviewTextInput="TextValidationTextBox"

Upvotes: 0

Usman Ali
Usman Ali

Reputation: 818

    private void txtLastName_PreviewTextInput(object sender, TextCompositionEventArgs e)
    {
        if (!System.Text.RegularExpressions.Regex.IsMatch(e.Text, "^[a-zA-Z]"))
        {
            e.Handled = true;
        }
    }

Upvotes: 5

Farhad Jabiyev
Farhad Jabiyev

Reputation: 26635

You must use IsLetter.

private void txtLastName_PreviewKeyDown(object sender, KeyEventArgs e)
    {
        if (Char.IsLetter((char)e.Key)) e.Handled = true;
    }

Upvotes: 1

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