Combine two generic lists of different types
<p>I have two lists as </p>

<pre><code>List &lt;BillDetails&gt;= new List&lt;BillDetails&gt;();  
List&lt;Header&gt;=new List&lt;Header&gt;();

Public class Billdetails  
{    
    public string chargecategory;  
    public string materialcode;  
    public int price;  
    public int quantity;  
}

public class Header  
{  
    public string chargecode;  
    public string customername;  
}  
</code></pre>

<p>These two lists are not linked in any way. But I have to combine them these two into one list and bind it to a gridview.</p>

<p>Please help me in combining or merging these two lists without anything in common between them.</p>

<p>Thanks in advance.</p>
