title: How to stop ComboBox SelectionChange from SelectionChanged Event
body: <p>I have a ComboBox which is binded with a List. Consider I have 10 Items in the List, so in the combobox also.</p>
  
  <p>Currently 2nd Item is selected in the ComboBox.</p>
  
  <p>Now I am selecting the 3rd item in the ComboBox.</p>
  
  <p>In the Combobox SelectionChanged event, I am doing some validation and validation fails so I don want my Selection is changed from 2nd item to 3rd item or the selection should remain in 2nd item.</p>
  
  <p>Please let me know how to do this?</p>
  
  <p>In the ComboBox SelectionChanged event, I tried to set ComboBox.SelectedItem = 2ndItem.</p>
  
  <p>But this didn't work properly.</p>
  
  <p>Hope, my requirement is clear. If you have any doubt then please feel free to ask me.</p>
  
  <p>regards,</p>
  
  <p>Vimal</p>