title: How to perform own assertions with coded UI testing
body: <p>I'm working with the visual studio 2010 codedUI tests.</p>
  
  <p>I want to be able to perform a little more than i can at the moment.</p>
  
  <p>e.g. I can can Assert if a particular field "AreEqual" to or "Contains" etc, but i want to do more.</p>
  
  <p>eg, i want to check if the field contains a numerical value within it.
  I edited the UIMap.Designer.cs and was able to achieve what i wanted.</p>
  
  <p>The only problem is is that this file gets overwritten when new test are added.</p>
  
  <p>so my question is how can i "fiddle" with fields/stings in the UI and implement my own assertions on them?</p>
  
  <p>Thanks</p>