private DataTable GetCompanyList()
        {
            DataTable _dt = null;

            DataAccess _DataAccess = new DataAccess();

            try
            {
                //_dt = _Student.GetStudentInfo(0);
                _DataAccess.OpenConnection(false);
                _DataAccess.Retrive_Query("SELECT [Company Name] FROM [dbo].[Company]", out _dt);

                _DataAccess.CloseConnection(false);

            }
            catch (Exception)
            {
                if (_DataAccess != null) { _DataAccess.RollBack(); _DataAccess.CloseConnection(false); }
            }
            finally
            {
            }
            return _dt;
        }