Invalid cast on using DataRowView

Hi,

I'm trying to use a dropdownlist in a datagrid edit mode. I'm trying to pres
elect the initial item in the dropdownlist and using the following code...

public void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls
.DataGridItemEventArgs e)
{			
  if(e.Item.ItemType == ListItemType.EditItem)
    {
	DataRowView myDataRowView = (DataRowView)e.Item.DataItem;
        string currentstatus = myDataRowView["Status"].ToString();
	DropDownList myDropDownList = (DropDownList)e.Item.FindControl("DropDownLis
t1");
	myDropDownList.SelectedIndex = myDropDownList.Items.IndexOf(myDropDownList.
Items.FindByText(currentstatus));				
    }
}

I keep getting "Specified cast is not valid." error for...
DataRowView myDataRowView = (DataRowView)e.Item.DataItem;


Can anyone help??

Thanks...