title: How to add automatically append ,00 when user is entering a value inside TextBox?
body: <p>I have some textboxes in my form where the user need to enter the different prices of article, what I want to do is to automatically add <code>,00</code> whenever text is changed . So when the user types <code>123</code> it is displayed like <code>123,00</code> !</p>
  
  <p>I tried with code below but it doesn't seem to work : </p>
  
  <pre><code>private void textBox6_TextChanged(object sender, EventArgs e)
      {
          if (!textBox6.Text.Contains(","))
  
          textBox6.SelectionStart =textBox6.TextLength;
          textBox6.Text += ",00";
      }
  </code></pre>
  
  <p>Any help would be highly appreciated</p>