注册表文件关联

      #region 写入程序相关
      private void WriteApp()
        {
            //设置程序打开路径
            string path = "\"C:\\Users\\Administrator\\Desktop\\Test\\TestWinForm\\bin\\Debug\\TestWinForm.exe\"";
            RegistryKey root = Registry.ClassesRoot;
            RegistryKey f1 = root.CreateSubKey("Form1");
            //设置注册表程序打开的项与值,其中SetValue("", path)代表设置默认值
            f1.CreateSubKey("shell").CreateSubKey("Open").CreateSubKey("Command").SetValue("", path);

            //设置程序图标
            string ico = "\"C:\\Users\\Administrator\\Desktop\\u7_original.ico\"";
            f1.CreateSubKey("DefaultIcon").SetValue("", ico);
        }
        #endregion

        #region 写关联文件
        private void WriteRelate()
        {
            RegistryKey root = Registry.ClassesRoot;
            //设置打开程序
            root.CreateSubKey(".cws").CreateSubKey("OpenWithProgids").SetValue("Form1","");
        }
        #endregion