problem with textbox

Question

how to find the content of text box is a string or integerthat is my text box should accept only alphabets but no numerical values if a user tries to enter the numerical values it should throw an exception.

Kirtan Patel · Answer

Friend in KeyPress event of Text Box Write Code like Below private void textBox1_KeyPress( object sender KeyPressEventArgs e) { Regex rex = new Regex ( [a-zA-Z ] ); if (rex.IsMatch(e.KeyChar.ToString()) == true || e.KeyChar == ( char ) Keys .Back || e.KeyChar == ( char ) Keys .Delete) { e.Handled = false ; } else { e.Handled = true ; MessageBox .Show( you can not Enter Numbers or Sysmbols ); } } if my answer helps you then mark Do you like this answer check box :)