using System;

using System.Linq;

using System.Xml;                   

using System.Xml.Linq;

using System.Collections; 

using System.Collections.Generic;

using System.Data;

using System.Data.DataSetExtensions;

using System.Data.Linq;

using System.Text;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        string input = @"<coverage x=""y1""  x2=""y2""  x3=""y3""  x4=""y4"">

    <sources>

      <source>.............</source>

    </sources>

</coverage>";

        XElement element = XElement.Parse(input);

        var results = element.Attributes()

                             .Select(x=> 

                                     new 

                                     {

                                         Key = x.Name, 

                                         Value = (string)x.Value

                                     });

        foreach(var result in results)

        {

            Console.WriteLine(result);

        }

    }

}