public static DataTable TabloSorgula(string sorgu)
        {
            DataTable dt = new DataTable();
            try
            {
                Connect();
                com.Connection = DataBaseConnection;
                com.CommandText = sorgu;
                OleDbDataAdapter adp = new OleDbDataAdapter(com);
                adp.Fill(dt);

            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                DisConnect();
            }
            return dt;

        }

gridview.datasource = TabloSorgula("Select * from tablo");
gridwiev.dahabind();