Merge Data table form data set into single tables using c#

//////////////// cs

public DataTable Merge_Tables(DataSet ds, string sortConditions, string sortType)

    {

        DataTable dt = new DataTable(), Sqldt = new DataTable();

        try

        {

            if (ds.Tables.Count > 0)

            {

                dt = ds.Tables[0].Copy();

                for (int i = 1; i < ds.Tables.Count; i++)

                {

                    DataTable dtMain = ds.Tables[i].Copy();

                    for (int r = 0; r < dtMain.Rows.Count; r++)

                    {

                        dt.ImportRow(dtMain.Rows[r]);

                    }

                }

            }

            dt.AcceptChanges();

            if (sortConditions != "")

            {

                DataView dv = dt.DefaultView;

                dv.Sort = "" + sortConditions + " " + sortType + "";

                Sqldt = dv.ToTable();

            }

            else

            {

                Sqldt = dt.Copy();

            }

            Sqldt.AcceptChanges();

        }

        catch (Exception)

        {

        }

        return Sqldt;

    }