CSHARP

xmldocument to c# object

void Main()
{
   String aciResponseData = "<?xml version="1.0" encoding="UTF-8"?><tag><bar>test</bar></tag>";
   using(TextReader sr = new StringReader(aciResponseData))
   {
        var serializer = new System.Xml.Serialization.XmlSerializer(typeof(MyClass));
        MyClass response =  (MyClass)serializer.Deserialize(sr);
        Console.WriteLine(response.bar);
   }
}

[System.Xml.Serialization.XmlRoot("tag")]
public class MyClass
{
   public String bar;
}

c# xmldocument from file

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("your file path");

c# object to xmldocument

C# object to xml document

xmldocument csproj

XmlDocument xdDoc = new XmlDocument();
xdDoc.Load("blah/blah.csproj");

XmlNamespaceManager xnManager =
 new XmlNamespaceManager(xdDoc.NameTable);
xnManager.AddNamespace("tu",
 "http://schemas.microsoft.com/developer/msbuild/2003");

XmlNode xnRoot = xdDoc.DocumentElement;
XmlNodeList xnlPages = xnRoot.SelectNodes("//tu:ItemGroup", xnManager);