SHCreateShortcut(@"\Windows\StartUp\" + 
Path.GetFileNameWithoutExtension(applicationPath) + ".lnk", "\"" + 
applicationPath + "\""); 
 
[DllImport("coredll.dll", EntryPoint="SHCreateShortcut") ] 
private static extern bool SHCreateShortcut(string shortcut, string target); 

       StreamWriter sw;
        FileStream fs;
        /**//// <summary>
        /// 创建快捷方式
        /// </summary>
        /// <param name="destination">快捷方式的目标</param>
        /// <param name="shortCut">快捷方式的名字</param>
        /// <param name="parameters">快捷方式参数</param>
        /// <returns>创建成功返回true</returns>
        private bool CreateShortCut(string destination, string shortCut, string parameters)
        {
            try
            {
                bool isQuoted = false;
                //检查目标路径中是否含有空格    
                destination = destination.Trim();
                if (destination.IndexOf(' ') > -1)
                    isQuoted = true;
                string link = destination;
                int len = destination.Length;
                if (isQuoted)
                    link = "\"" + link + "\"";
                if (!String.IsNullOrEmpty(parameters))
                {
                    //有参数则加上参数长度和与路径间的空格
                    len += parameters.Length + 1;
                    link += " " + parameters;
                }


                //打开文件流写入上述信息
                 fs = new FileStream(shortCut,
                    FileMode.Create,
                            FileAccess.Write,
                            FileShare.ReadWrite);
                 sw = new StreamWriter(fs);
                sw.WriteLine(len.ToString() + "#" + link);
            }
            catch { }
            finally
            {
                //别忘了关闭资源
                sw.Close();
                fs.Close();
            }
            return true;
        }

            CreateShortCut(@"\Storage Card\ShortCut_SP.exe", @"\Windows\Start Menu\MyApp.lnk", "");