Only Double Must be Accepted in the textBox.

Question

How can I accept only double numbers in a textbox while typing in it? I dont use with a button this textbox. I am taking the input while typing. A you know user can input a number like 5E11. When a user wrote "E" his input become "5E" before he finished typing the number and "5E" is not a double. What code do you suggest for me?

Santhosh Kumar Jayaraman · Answer

try this private void textBox1_KeyPress(object sender KeyPressEventArgs e) { if ((e.KeyChar 57) && e.KeyChar != 46 && e.KeyChar != 8) e.Handled = true; } 48-57 will be numbers 46- decimal point 8-backspace This will allow users to type only numbers decimal and backspace