Telerik RadGrid - Getting the id of the selected row through a RadContextMenu

Client side code:

<script type="text/javascript">
function RowContextMenu(sender, e)
{
var index = e.get_itemIndexHierarchical();
document.getElementById("radGridClickedRowIndex").value = index;
var menu = $find("<%= PractitionerContextMenu.ClientID %>");
var evt = e.get_domEvent();
menu.show(evt);

e.cancelBubble = true;
e.returnValue = false;

if (e.stopPropagation)
{
e.stopPropagation();
e.preventDefault();
}
sender.get_masterTableView().selectItem(sender.get_masterTableView().get_dataItems()[index].get_element(), true);
}
</script>

Add the following into your RadGrid

<ClientSettings>
<ClientEvents OnRowContextMenu="RowContextMenu"></ClientEvents>
<Selecting AllowRowSelect="true" />
</ClientSettings>

Also make sure you have the DataKeyNames property set on the RadGrid:

DataKeyNames="Id"

Then in the code-behind have this method for the OnItemClick property of the RadContextMenu

protected void ContextMenu_ItemClick(object sender, RadMenuEventArgs e)
{

int gridClickedRowIndex = Convert.ToInt32(Request.Form["radGridClickedRowIndex"], CultureInfo.CurrentCulture);

int id = (int)PractitionerGrid.Items[gridClickedRowIndex].GetDataKeyValue("Id");

// Do whatever
}