System.Data.Tests.DataTableTest.WriteXmlSchema_Hierarchy C# (CSharp) Метод

        public void WriteXmlSchema_Hierarchy()
        {
            var ds = new DataSet();
            DataTable table1 = new DataTable();
            DataColumn idColumn = table1.Columns.Add("ID", typeof(int));
            table1.Columns.Add("Name", typeof(string));
            table1.PrimaryKey = new DataColumn[] { idColumn };
            DataTable table2 = new DataTable();
            table2.Columns.Add(new DataColumn("OrderID", typeof(int)));
            table2.Columns.Add(new DataColumn("CustomerID", typeof(int)));
            table2.Columns.Add(new DataColumn("OrderDate", typeof(DateTime)));
            table2.PrimaryKey = new DataColumn[] { table2.Columns[0] };
            ds.Tables.Add(table1);
            ds.Tables.Add(table2);
            ds.Relations.Add("CustomerOrder",
                new DataColumn[] { table1.Columns[0] },
                new DataColumn[] { table2.Columns[1] }, true);

            StringWriter writer1 = new StringWriter();
            table1.WriteXmlSchema(writer1, false);
            string expected1 = "<?xml version=\"1.0\" encoding=\"utf-16\"?>\n<xs:schema id=\"NewDataSet\" xmlns=\"\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" xmlns:msdata=\"urn:schemas-microsoft-com:xml-msdata\">\n  <xs:element name=\"NewDataSet\" msdata:IsDataSet=\"true\" msdata:MainDataTable=\"Table1\" msdata:UseCurrentLocale=\"true\">\n    <xs:complexType>\n      <xs:choice minOccurs=\"0\" maxOccurs=\"unbounded\">\n        <xs:element name=\"Table1\">\n          <xs:complexType>\n            <xs:sequence>\n              <xs:element name=\"ID\" type=\"xs:int\" />\n              <xs:element name=\"Name\" type=\"xs:string\" minOccurs=\"0\" />\n            </xs:sequence>\n          </xs:complexType>\n        </xs:element>\n      </xs:choice>\n    </xs:complexType>\n    <xs:unique name=\"Constraint1\" msdata:PrimaryKey=\"true\">\n      <xs:selector xpath=\".//Table1\" />\n      <xs:field xpath=\"ID\" />\n    </xs:unique>\n  </xs:element>\n</xs:schema>";
            Assert.Equal(expected1, writer1.ToString().Replace("\r\n", "\n"));

            StringWriter writer2 = new StringWriter();
            table1.WriteXmlSchema(writer2, true);
            string expected2 = "<?xml version=\"1.0\" encoding=\"utf-16\"?>\n<xs:schema id=\"NewDataSet\" xmlns=\"\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" xmlns:msdata=\"urn:schemas-microsoft-com:xml-msdata\">\n  <xs:element name=\"NewDataSet\" msdata:IsDataSet=\"true\" msdata:MainDataTable=\"Table1\" msdata:UseCurrentLocale=\"true\">\n    <xs:complexType>\n      <xs:choice minOccurs=\"0\" maxOccurs=\"unbounded\">\n        <xs:element name=\"Table1\">\n          <xs:complexType>\n            <xs:sequence>\n              <xs:element name=\"ID\" type=\"xs:int\" />\n              <xs:element name=\"Name\" type=\"xs:string\" minOccurs=\"0\" />\n            </xs:sequence>\n          </xs:complexType>\n        </xs:element>\n        <xs:element name=\"Table2\">\n          <xs:complexType>\n            <xs:sequence>\n              <xs:element name=\"OrderID\" type=\"xs:int\" />\n              <xs:element name=\"CustomerID\" type=\"xs:int\" minOccurs=\"0\" />\n              <xs:element name=\"OrderDate\" type=\"xs:dateTime\" minOccurs=\"0\" />\n            </xs:sequence>\n          </xs:complexType>\n        </xs:element>\n      </xs:choice>\n    </xs:complexType>\n    <xs:unique name=\"Constraint1\" msdata:PrimaryKey=\"true\">\n      <xs:selector xpath=\".//Table1\" />\n      <xs:field xpath=\"ID\" />\n    </xs:unique>\n    <xs:unique name=\"Table2_Constraint1\" msdata:ConstraintName=\"Constraint1\" msdata:PrimaryKey=\"true\">\n      <xs:selector xpath=\".//Table2\" />\n      <xs:field xpath=\"OrderID\" />\n    </xs:unique>\n    <xs:keyref name=\"CustomerOrder\" refer=\"Constraint1\">\n      <xs:selector xpath=\".//Table2\" />\n      <xs:field xpath=\"CustomerID\" />\n    </xs:keyref>\n  </xs:element>\n</xs:schema>";
            Assert.Equal(expected2, writer2.ToString().Replace("\r\n", "\n"));
        }