怎么向WinForm中Resource.resx文件中添加字符串，并读取出来

如何向WinForm中Resource.resx文件中添加字符串，并读取出来
网上查了一些这方面的资料，可是我向里面添加，它说添加成功！可是打开此文件一看，并不在里面。
当然也读取不出来，可是我手动向里面添加一个字符串，它就能够读取出来。也就是根本没有添加进去，
请各位前辈帮忙解决一下。

[解决办法]
外置资源文件读写片段:

C# code

    // 将 VS2005ImageLibrary 目录下的图片放入一个资源文件    string VS2005ImageLibraryDir = "D:\\VS2005ImageLibrary";    void btnResourceTest_Click(object sender, EventArgs e)    {      ResXResourceWriter writer = new ResXResourceWriter(Path.Combine(VS2005ImageLibraryDir, "VS2005ImageLibrary.resx"));      DirectoryInfo di = new DirectoryInfo(VS2005ImageLibraryDir);      writeDirectory(writer, di);      writer.Close();      writer.Dispose();    }    void writeDirectory(ResXResourceWriter writer, DirectoryInfo directory)    {      FileInfo[] files = directory.GetFiles();      if (files != null && files.Length > 0)        writeFiles(writer, files);      DirectoryInfo[] dirs = directory.GetDirectories();      if (dirs != null && dirs.Length > 0)        foreach (DirectoryInfo di in dirs)        {          writeDirectory(writer, di);        }    }    void writeFiles(ResXResourceWriter writer, FileInfo[] files)    {      Image bitmap = null;      Icon icon = null;      string resourceName = null;      foreach (FileInfo fi in files)      {        resourceName = fi.FullName.Substring(3).Replace('\\', '.');        if (fi.Extension.EndsWith("gif", StringComparison.OrdinalIgnoreCase) ||          fi.Extension.EndsWith("bmp", StringComparison.OrdinalIgnoreCase) ||          fi.Extension.EndsWith("png", StringComparison.OrdinalIgnoreCase))        {          bitmap = Bitmap.FromFile(fi.FullName);          writer.AddResource(resourceName, bitmap);          bitmap.Dispose();          icon = null;        }        if (fi.Extension.EndsWith("ico", StringComparison.OrdinalIgnoreCase))        {          icon = new Icon(fi.FullName);          writer.AddResource(resourceName, icon);          icon.Dispose();          icon = null;        }      }    }    void button37_Click(object sender, EventArgs e)    {      ResXResourceReader reader = new ResXResourceReader(Path.Combine(VS2005ImageLibraryDir, "VS2005ImageLibrary.resx"));      System.Text.StringBuilder sb = new StringBuilder();      foreach (DictionaryEntry d in reader)      {        sb.AppendFormat("name: {0}, type: {1}{2}", d.Key.ToString(), d.Value.GetType().FullName, "\n");      }      reader.Close();      MessageBox.Show(sb.ToString());    }
[解决办法]
.resx是以 XML 格式存储的，试试xml的读写方法。