System.Data.Tests.DataTableTest.WriteXmlSchema3 C# (CSharp) Method

        public void WriteXmlSchema3()
        {
            string xmlschema = @"<?xml version=""1.0"" encoding=""utf-16""?>
<xs:schema id=""ExampleDataSet"" xmlns="""" xmlns:xs=""http://www.w3.org/2001/XMLSchema"" xmlns:msdata=""urn:schemas-microsoft-com:xml-msdata"">
  <xs:element name=""ExampleDataSet"" msdata:IsDataSet=""true"" msdata:MainDataTable=""ExampleDataTable"" msdata:UseCurrentLocale=""true"">
    <xs:complexType>
      <xs:choice minOccurs=""0"" maxOccurs=""unbounded"">
        <xs:element name=""ExampleDataTable"">
          <xs:complexType>
            <xs:attribute name=""PrimaryKeyColumn"" type=""xs:int"" use=""required"" />
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
    <xs:unique name=""PK_ExampleDataTable"" msdata:PrimaryKey=""true"">
      <xs:selector xpath="".//ExampleDataTable"" />
      <xs:field xpath=""@PrimaryKeyColumn"" />
    </xs:unique>
  </xs:element>
</xs:schema>";
            DataSet ds = new DataSet("ExampleDataSet");

            ds.Tables.Add(new DataTable("ExampleDataTable"));
            ds.Tables["ExampleDataTable"].Columns.Add(
                new DataColumn("PrimaryKeyColumn", typeof(int), "", MappingType.Attribute));
            ds.Tables["ExampleDataTable"].Columns["PrimaryKeyColumn"].AllowDBNull = false;

            ds.Tables["ExampleDataTable"].Constraints.Add(
                "PK_ExampleDataTable",
                ds.Tables["ExampleDataTable"].Columns["PrimaryKeyColumn"],
                true);

            ds.AcceptChanges();
            StringWriter sw = new StringWriter();
            ds.Tables[0].WriteXmlSchema(sw);

            string result = sw.ToString();

            Assert.Equal(xmlschema.Replace("\r\n", "\n"), result.Replace("\r\n", "\n"));
            //Assert.Equal (xmlschema, result.Replace ("\r\n");
        }