using System;

using System.Linq;

using System.Collections.Generic;                   

using System.Collections;                   

using System.Xml;                   

using System.Xml.Linq;

using System.Data;

using System.Data.DataSetExtensions;

using System.Data.Linq;

using System.Runtime;                                       

using System.Runtime.Remoting;

using System.Globalization;

using System.Runtime.CompilerServices;

using System.Reflection;    

using System.Text;

using System.IO;

public class Program

{

    public static void Main()

    {

        string input = @"<LayoutControl ID=""rootlyt"" Type=""LayoutControl"">

  <LayoutGroup ID=""lgp8"" Header=""PersonalInfo"" IsCollapsed=""False"" IsLocked=""False"" Orientation=""Vertical"" View=""GroupBox"" HorizontalAlignment=""Left"" VerticalAlignment=""Top"" Width=""380"" Height=""295"" Type=""GroupItem"" Properties=""IsCollapsible=False,IsCollapsed=False,IsLocked=False,"">

    <Element ID=""layout2"" HorizontalAlignment=""Left"" VerticalAlignment=""Top"" Width=""300"" Height=""25"" Label=""Name"" Background=""#00FFFFFF"" ContentName=""txt2"" Type=""TextEdit"" />

  </LayoutGroup>

</LayoutControl> ";

        XDocument doc = XDocument.Parse(input);

        foreach(var element in doc.Descendants("Element").Select(x=> new {element =x, attributes= x.Attributes()}))

        {

            var attributes = element.attributes.ToList();

            element.element.RemoveAttributes();

            foreach(XAttribute attribute in attributes)         

            {   

                element.element.Add(new XElement(attribute.Name, attribute.Value));

            }

        }

        doc.Dump();

    }

}

​

public class Car

{

    public int car_id;

    public DateTime date;

}

​

​