（1）該資源dll（resDll）的編譯，在引入圖片檔案後(在Resources目錄下)，右擊：屬性：生成的操作：嵌入資源

（2）在另外的檔案中引入該資原始檔，然後以下程式即可進行呼叫：

        using System.Reflection;

           Assembly myAssembly;            
            myAssembly = System.Reflection.Assembly.Load("resDll");         
            System.Resources.ResourceManager myManager = new System.Resources.ResourceManager("resDll.Properties.Resources", myAssembly);              
            System.Drawing.Image myImage= (System.Drawing.Image)myManager.GetObject("HW");  //HW.BMP

(3)    或者在帶來了內定義公共函式

 ///從本dll中提取名稱為str.bmp的bmp檔案
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
         public System.Drawing.Image getImage(string str)
         {

             Assembly asm = Assembly.GetExecutingAssembly();
             string name = asm.GetName().Name;
             Bitmap bmp = new Bitmap(asm.GetManifestResourceStream(name + ".Resources."+str)); 
             return bmp;

         }
           
     其他程式中使用圖片，只需

  resDll.res a =new resDll.res();

pictureBox1.Image = a.getImage("HW.bmp");