WinForms TextBox to accept numbers in a range

I will use a label with font color red just below the text box and will adopt the following code

private void textBox1_TextChanged(object sender, EventArgs e)
       {
           int min=0,max=256;
           try
           {
               label1.Visible = false;
               int n = int.Parse(textBox1.Text);
               if (n > max || n < min)
               {
                   label1.Text="Number can be only in range "+min.ToString()+" and "+max.ToString();
                   label1.Visible = true;
                  // textBox1.Text = textBox1.Text.Remove(textBox1.Text.Length - 1);
               }
           }
           catch (Exception ex)
           {
               label1.Text = "Not a Number";
               label1.Visible=true;
               //textBox1.Text = textBox1.Text.Remove(textBox1.Text.Length - 1);
           }
       }

If you un-comment the comment lines, it will remove the last character, though label will not be visible(Also there is a small bug, the cursor will go to first position which can be set to last character).