Allowing backspace within an integer inly textbox...???

Question

I've put the following code into the KeyPress event for my text box and it succesffuly only allows number sin now BUT as a sideeffect I cant actually use backspace to delete typing errors :-( Any ideas on how to fix this?

joy.simpson · Answer

The ASCII character code for the backspace key is 8. Just add this line to the code: private void textBox1_KeyPress(object sender System.Windows.Forms.KeyPressEventArgs e) { if (e.KeyChar != 8) if (char.IsNumber(e.KeyChar) == false) { e.Handled = true; } }

S4E · Answer

Ooops forgot the code: if(char.IsNumber(e.KeyChar) == false) { e.Handled = true; }