Simple C# validation.

1 - I added the event handler how you told me to do it.
2 - You are allowed to write numbers. This is what im trying to stop. At the minute, if i type a number into the text box, they appear as normal.
3 - The only code in that button is what you have provided:

private void nameTextBox_KeyPress(object sender, KeyPressEventArgs e)
{
if (Char.IsNumber(e.KeyChar))
{
e.Handled = true;
MessageBox.Show("Error");
}
}

If you already had this function and then tried to add the event handler, you would get a routine named: nameTextBox_KeyPress1.

Check back in the form initialization to see what method is being assoiciated with the KeyPressed Event.....

Sorted it!
It was due to another, unrelated compilation error (from another problem that would be way too complicated to explain, unfortunately).
Its working perfectly now - thank you so much.

Quote:

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It was due to another, unrelated compilation error

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How/Why did you RUN the program with a Compilation Error??? :confused: :confused: