title: Textbox, delete button [c#]
body: <p>to add new letter to textbox i use</p>
  
  <pre><code>Textbox.Text = Textbox.Text + " ";
  </code></pre>
  
  <p>adds space etc., its simple</p>
  
  <p>but i didnt figured out how can i delete last line</p>
  
  <p>for examp.</p>
  
  <p>text of textbox is abcdefg</p>
  
  <p>and when user clicks delete, text is "abcdef" then "adcde" etc.</p>
  
  <p>how can i do this ? </p>
  
  <p>i tried to search the web but i failed because i dont know how to search that such a thing ^^ </p>