using System;

using System.Collections.Generic;

using System.Text;

using System.Xml.Serialization;

using System.Xml;

using System.Xml.Linq;

using System.IO;

using System.Data;

using System.Runtime.Serialization;

using System.Runtime.Serialization.Formatters.Binary;

using System.IO.Compression;

​

    // https://stackoverflow.com/questions/48913782/transform-style-xml-in-c-sharp-with-xmldocument?noredirect=1#comment84836176_48913782

    static class TestClass

    {

        public static void Test()

        {

            // Load the XML

            var xmlDoc = new XmlDocument();

            xmlDoc.LoadXml(GetXml());

​

            Console.WriteLine("\nInitial XML:");

            Console.WriteLine(xmlDoc.GetOuterXml());

​

            // Get the XML namespace of the root element.

            var namespaceURI = xmlDoc.DocumentElement.NamespaceURI;

​

            // Create the subsystem in the same XML namespace

            var subsystem = xmlDoc.DocumentElement.AppendChild(xmlDoc.CreateElement("subsystem", namespaceURI));

​

            // Add the specified attributes.

            subsystem.Attributes.Append(xmlDoc.CreateAttributeWithValue("name", "hahaha"));

            subsystem.Attributes.Append(xmlDoc.CreateAttributeWithValue("tag1", "NoNo"));

            subsystem.Attributes.Append(xmlDoc.CreateAttributeWithValue("tag2", "SoNo"));

​

            // Save the XML

            Console.WriteLine("\nModified XML:");

            Console.WriteLine(xmlDoc.GetOuterXml());

        }

​

        static string GetXml()

        {

            var xml = @"<?xml version=""1.0""?>

<chssystem ExportDate=""2/21/2018"" ExportTime=""2:57 PM EST"" DateFormat=""MM/dd/yyyy"" NumberFormat=""HH:mm:ss "" SchemaValidation=""true"" ExportVersion=""2016.1.SP1710.57"" xmlns=""http://www.mentor.com/harness/Schema/LibrarySchema"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xsi:schemaLocation=""http://www.mentor.com/harness/Schema/LibrarySchema file:/C:/MentorGraphics/VeSys_Client/dtd/LibrarySchema.xsd"" XMLVersion=""1.6"">

​

  <librarycomponenttype librarycomponenttype_id=""_GROUPID_CONNECTOR"" description=""Connector"" clipgromident="""" typecode=""CONN"" />

​

  <connectorpart libraryobject_id=""_OID_CTEST""  depth=""0.0"" description=""TEST DATA"" graphics=""0"" groupname=""Connector"" librarycomponenttype_id=""_GROUPID_CONNECTOR""  cavityqt=""1""  partnumber=""CONN-C-TEST""   unitofmeasure=""Each""  >

        <librarycavity librarycavity_id=""ID1"" ca_mappingtype=""Userdefined"" ca_attach="" "" isblocked=""1"" pingraphic="" "" cavityname=""1"" librarypincontainer_id=""_OID_CTEST"" sortorder=""1""/>

  </connectorpart>

</chssystem>";

            return xml;

        }

    }

​

    public static class XmlNodeExtensions

    {

        public static XmlAttribute CreateAttributeWithValue(this XmlDocument doc, string name, string value)

        {

            var attr = doc.CreateAttribute(name);

            attr.Value = value;

            return attr;

        }

    }

​

    public static class XmlSerializationHelper

    {       

        public static string GetOuterXml(this XmlNode node, bool indent = true)

        {

            if (node == null)

                return null;

            using (var textWriter = new StringWriter())

            {

                var settings = new XmlWriterSettings

                {

                    Indent = indent,

                    OmitXmlDeclaration = true,

                };

                using (var xmlWriter = XmlWriter.Create(textWriter, settings))

                {

                    node.WriteTo(xmlWriter);

                }

                return textWriter.ToString();

            }

        }

    }

    public class AssertionFailedException : System.Exception

    {

        public AssertionFailedException() : base() { }

​

        public AssertionFailedException(string s) : base(s) { }

    }

​

    public static class Assert

    {

        public static void IsTrue(bool value)

        {

            IsTrue(value, "failed");

        }

​

        public static void IsTrue(bool value, string message)

        {

            if (value == false)

                throw new AssertionFailedException(message ?? "failed");

        }

    }

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Roslyn 2.0 Compiler; Environment version: " + Environment.Version);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Uncaught exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​