using System;
using System.Linq;
using System.Text.RegularExpressions;

public class Test
{
	private const string INPUT =
            "Project(\"{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}\") = \"Common\", \"Libraries\\Common\\Common.csproj\", \"{91197577-34B9-4D46-B3FE-A8589D4380B1}\"";

	private const string OUTPUT =
            "Project(\"{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}\") = \"Blah\", \"..\\Core\\Libraries\\Blah\\Blah.csproj\", \"{91197577-34B9-4D46-B3FE-A8589D4380B1}\"";

	public static void Main()
	{
		var name = "Blah";
            var location = "..\\Core\\Libraries\\Blah\\Blah.csproj";
            var result = Regex.Replace(INPUT, "^(.*\")(\\w+)(\".*\")([\\w\\\\\\.]+)(\".*)$", m =>
                {
                    return string.Join("",
                        m.Groups.OfType<Group>().Select((g, i) =>
                        {
                            switch (i)
                            {
                                case 1:
                                    return g.Value;
                                case 2:
                                    return name;
                                case 3:
                                    return g.Value;
                                case 4:
                                    return location;
                                default:
                                    return g.Value;
                            }
                        }).Skip(1).ToArray());
                });
            Console.Out.WriteLine($"Input:\t\t{INPUT}");
            Console.Out.WriteLine($"Expected:\t{OUTPUT}");
            Console.Out.WriteLine($"Actual:\t\t{result}");
	}
}