title: Not able to add new column in infragistics WebHierarchicalDataGrid
body: <p>I am trying to add new column whose value will be computed from code behind and display it on <code>WebHierarchicalDataGrid</code> as separate column. I added below code :</p>
  
  <p><strong>Aspx page :</strong></p>
  
  <pre><code> &lt;ig:TemplateDataField Key="htmllink"&gt;
       &lt;Header Text="HtmlLink" CssClass="grey bold" /&gt;
   &lt;/ig:TemplateDataField&gt;
  </code></pre>
  
  <p>Problem is I am not able to understand how to add it in code behind and on which event to compute its value. I tried doing it on <code>onrowislanddatabinding</code>, but couldnt do so in below event. </p>
  
  <pre><code> protected void WebHierarchicalDataGrid1_RowIslandDataBinding(object sender, RowIslandEventArgs e)
  {
  
  
    //e.RowIsland.Columns["htmllink"] = value 1 + value 2.
  
  }
  </code></pre>
  
  <p>I am not sure what needs to be done as I am new to infragistics.</p>