//得到桌面文件夹 

string DesktopPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Desktop);

FileInfo file = new FileInfo(DesktopPath + "\\快捷方式名称.lnk");
//如果存在则不创建
   if (file.Exists)
   {
        return;
   }
   IWshRuntimeLibrary.WshShell shell = new IWshRuntimeLibrary.WshShellClass();
   IWshRuntimeLibrary.IWshShortcut shortcut = (IWshRuntimeLibrary.IWshShortcut)shell.CreateShortcut(DesktopPath + "\\\快捷方式名称.lnk");
   shortcut.TargetPath = System.Environment.CurrentDirectory + "\\aaa.exe";//程序路径
   shortcut.Arguments = "";// 参数 
   shortcut.Description = "快捷方式名称";
   shortcut.WorkingDirectory = System.Environment.CurrentDirectory;//程序所在文件夹，在快捷方式图标点击右键可以看到此属性 
   //shortcut.IconLocation = @"D:\software\cmpc\zy.exe,0";//图标 
   //shortcut.Hotkey = "CTRL+SHIFT+Z";//热键 
   shortcut.WindowStyle = 1;