System.Data.DataSet.AcceptChanges C# (CSharp) Method

        public void AcceptChanges()
        {
            long logScopeId = DataCommonEventSource.Log.EnterScope("<ds.DataSet.AcceptChanges|API> {0}", ObjectID);
            try
            {
                for (int i = 0; i < Tables.Count; i++)
                {
                    Tables[i].AcceptChanges();
                }
            }
            finally
            {
                DataCommonEventSource.Log.ExitScope(logScopeId);
            }
        }

 public void TestSerializeDataSet()
 {
     DataSet ds = new DataSet("DataSet");
     //Table 1
     ds.Tables.Add(new DataTable("Table"));
     ds.Tables[0].Columns.Add("col1", typeof(int));
     ds.Tables[0].Columns.Add("col2", typeof(int));
     DataRow dr = ds.Tables[0].NewRow();
     dr["col1"] = 1;
     dr["col2"] = 2;
     ds.Tables[0].Rows.Add(dr);
     //Table 2
     ds.Tables.Add(new DataTable("Table1"));
     ds.Tables[1].Columns.Add("col1_col1", typeof(int));
     ds.Tables[1].Columns.Add("col2", typeof(int));
     dr = ds.Tables[1].NewRow();
     dr["col1_col1"] = 1;
     ds.Tables[1].Rows.Add(dr);
     ds.Relations.Add(new DataRelation("table_table1", ds.Tables[0].Columns[0], ds.Tables[1].Columns[0], true));
     ds.AcceptChanges();
     string actualXml = XmlSerializationHelper.SerializeDataTable(ds.Tables[0], true);
     string expectedXml = "<DataSet><Table><col1>1</col1><col2>2</col2></Table><Table1><col1_col1>1</col1_col1></Table1></DataSet>";
     Trace.Write(actualXml);
     Assert.AreEqual(actualXml, expectedXml);
 }