title: How to add an item into a particular index in ICollection?
body: <p>Code:</p>
  
  <pre><code>TestItem TI = new TestItem();
  ITestItem IC = TI;
  controls.TestItems.Add(IC); //This adds the item into the last column, but I need to add this in a particular index
  
  TestItem is a Class  
  ITestItem is an Interface 
  controls is a local variable
  TestItems is a ICollection&lt;ITestItem&gt;
  </code></pre>
  
  <p>How to add an item into a particular index in ICollection?</p>