title: compute simple math expression for windows phone 7
body: <p>i have a simple expression :
  string s = "((5*5)-5)/10";</p>
  
  <p>in console or windows form we can use this code
  var tes = new DataTable().Compute(s,null);</p>
  
  <p>But the problem is that DataTable() could not found.</p>
  
  <p>Please help me find the solution for this</p>