System.Data.Tests.DataTableTest4.XmlTest15 C# (CSharp) Метод

        public void XmlTest15()
        {
            MakeParentTable1();

            using (FileStream stream = new FileStream(_tempFile, FileMode.Create))
            {
                _parentTable1.WriteXml(stream, XmlWriteMode.IgnoreSchema);
            }

            //Create a target table which has matching column(s) name and an extra column
            DataTable table = new DataTable("ParentTable");
            XmlReadMode mode = XmlReadMode.Auto;
            table.Columns.Add(new DataColumn("id", typeof(int)));
            table.Columns.Add(new DataColumn("ParentItem", typeof(string)));
            table.Columns.Add(new DataColumn("DepartmentID", typeof(int)));
            table.Columns.Add(new DataColumn("DummyColumn", typeof(string)));

            using (FileStream stream = new FileStream(_tempFile, FileMode.Open))
            {
                mode = table.ReadXml(stream);
            }

            Assert.Equal(XmlReadMode.IgnoreSchema, mode);
            Assert.Equal("ParentTable", table.TableName);
            Assert.Equal(3, table.Rows.Count);
            Assert.Equal(4, table.Columns.Count);
            Assert.Null(table.DataSet);

            //Check the Columns
            Assert.Equal("id", table.Columns[0].ColumnName);
            Assert.Equal(typeof(int), table.Columns[0].DataType);

            Assert.Equal("ParentItem", table.Columns[1].ColumnName);
            Assert.Equal(typeof(string), table.Columns[1].DataType);

            Assert.Equal("DepartmentID", table.Columns[2].ColumnName);
            Assert.Equal(typeof(int), table.Columns[2].DataType);

            Assert.Equal("DummyColumn", table.Columns[3].ColumnName);
            Assert.Equal(typeof(string), table.Columns[3].DataType);

            //Check the rows
            DataRow row = table.Rows[0];
            Assert.Equal(1, row["id"]);
            Assert.Equal("ParentItem 1", row["ParentItem"]);
            Assert.Equal(1, row["DepartmentID"]);
            Assert.Equal(DBNull.Value, row["DummyColumn"]);

            row = table.Rows[1];
            Assert.Equal(2, row["id"]);
            Assert.Equal("ParentItem 2", row["ParentItem"]);
            Assert.Equal(2, row["DepartmentID"]);
            Assert.Equal(DBNull.Value, row["DummyColumn"]);

            row = table.Rows[2];
            Assert.Equal(3, row["id"]);
            Assert.Equal("ParentItem 3", row["ParentItem"]);
            Assert.Equal(3, row["DepartmentID"]);
            Assert.Equal(DBNull.Value, row["DummyColumn"]);
        }