title: Get minimum and maximum value using linq
body: <p>I have a list that has values as displayed below<br>
  Using Linq how can i get the minimum from COL1 and maximum from COL2 for the selected id.</p>
  
  <pre><code>id     COL1      COL2
  =====================
  221     2         14
  221     4         56   
  221    24         16   
  221     1         34
  222    20         14    
  222     1         12 
  222     5         34    
  </code></pre>
  
  <p>Based on the below list it should display id <code>221 1 56</code> and <code>222 1 34</code>
  help me out</p>