title: Add a character to a label C# WPF
body: <p>I am making a calculator app in WPF. On click of the 0 button it should add a 0. On click of the 1 button it should add a 1, and so on. I have used this code:</p>
  
  <pre><code>myLabel.Content = "0";
  </code></pre>
  
  <p>This changes the content to 0. When I put this on the 1 button and change the 0 to a 1, it removes the 0 and puts the 1 instead. How can I make it add to the label and not replace? Thanks.</p>