title: How to handle the event fired continuously?
body: <p>I tried to hook the three events in same name like as below</p>
  
  <pre><code>this.textFontFace.TextChanged += Format_TextChanged;
  this.textFontSize.TextChanged += Format_TextChanged;
  this.textFontType.TextChanged += Format_TextChanged;
  </code></pre>
  
  <p>Now, i changed TextBox value for <code>textFontFace</code>, <code>Format_TextChanged</code> method fired three times. I need to fired only one time based on changes made TextBox. How can i handle this? 
  please, help.</p>