Reflection C#

using System.IO;
using System.Reflection;
internal class Util
{
    public static string GetResource(string resourceName)
    {
        Assembly assembly = Assembly.GetExecutingAssembly();
        TextReader textReader = new StreamReader(assembly.GetManifestResourceStream(resourceName));
        string result = textReader.ReadToEnd();
        textReader.Close();
        return result;
    }
}