How I can read a text file in solotion of asp.net webform ?

using (Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("WAT.AppCode.countries.tsv"))
           {
               StreamReader streamReader = new StreamReader(stream, false);
               string text;
               while ((text = streamReader.ReadLine()) != null)
               {
                   if (text.Length != 0)
                   {
                       CountryEntry cii = new CountryEntry(text);
                       this.Add(cii);
                   }
               }
           }