validating textbox in windows form applications

Question

My scenario is:

Not allowing spaces at starting position of textbox after enter one or more characters text box allows spaces

Below not applicable to my sce

Answer 1

You say option number one is not applicable. How about a version of option number one that uses the same event and similar code but inside a second IF statement. This keeps spaces from working unless there are other characters in the text box.

if (textBox1.Text.Length == 0)
{
 e.Handled = (e.KeyChar == (char)Keys.Space)) 
}