Lire le contenu d'une ressource embarquée

var assembly = Assembly.GetExecutingAssembly();
var resourceName = "MyCompany.MyProduct.MyFile.txt";

using (Stream stream = assembly.GetManifestResourceStream(resourceName))
using (StreamReader reader = new StreamReader(stream))
{
    string content = reader.ReadToEnd();
}

Config Log4net comme Embedded Resource