Show different right click options based on cell content

[Danny]

I am looking to show a different context menu, based on the value of a cell when right clicking on a row. For example. I have a grid, that displays a list of emails. One of the cells in the grid is an Boolean, called isread. If the value is true, when I right click on the email. I want an option to "Mark as Unread" If the value is false, I want to display "Mark as Read" 

Any assistance in how to do this, and if it is possible would be greatly appreciated. 

[Shinu]

Hello Danny,

You can attach OnRowContextMenu and show the ContextMenu based on the clicked cell index.

javascript:

function RowContextMenu(sender, eventArgs)
 {
      var menu1 = $find("<%=RadMenu1.ClientID %>");
      var menu2 = $find("<%=RadMenu2.ClientID %>");
      var cellIndex = evt.target.cellIndex;//accessing the index of cell clicked
      alert(cellIndex);
      //Show the menu based on the cell clicked.
  }

Thanks,
Shinu.