Pls Help
How to find index of a datarow in a datatable?

My Code is
Code:
]
dtr.PrimaryKey= new DataColumn[] { dtr.Columns["Company_cd"] };
      String a = Convert.ToString(Session["CompanyID"]);
      dr = dtr.Rows.Find(Convert.ToString(Session["CompanyID"]));
      Position=dr.Table.Rows.IndexOf(dr);
        Count = dtr.Rows.Count;