public TestOne()

 {

  InitializeComponent();

 SaveFileDialog();//调用打开SaveFileDialog 保存对话框

 }

 #region 保存对话框

 private void SaveFileDialog()

 {

 //string localFilePath, fileNameExt, newFileName, FilePath;

 SaveFileDialog saveFileDialog1 = new SaveFileDialog(); //设置文件类型

 saveFileDialog1.Filter = " txt files(*.txt)|*.txt|All files(*.*)|*.*"; //设置默认文件类型显示顺序

 saveFileDialog1.FilterIndex = ; //保存对话框是否记忆上次打开的目录

  saveFileDialog1.RestoreDirectory = true; //点了保存按钮进入

  if (saveFileDialog1.ShowDialog() == DialogResult.OK)

 {

 //获得文件路径

 //localFilePath = saveFileDialog1.FileName.ToString();

  //获取文件名，不带路径

 //fileNameExt = localFilePath.Substring(localFilePath.LastIndexOf("\\") + 1);

  //获取文件路径，不带文件名

  //FilePath = localFilePath.Substring(0, localFilePath.LastIndexOf("\\"));

   //给文件名前加上时间

  //newFileName = DateTime.Now.ToString("yyyyMMdd") + fileNameExt;

 //在文件名里加字符

 //saveFileDialog1.FileName.Insert(1,"dameng");

   System.IO.FileStream fs = (System.IO.FileStream)saveFileDialog1.OpenFile();

 //输出文件

 //fs输出带文字或图片的文件，就看需求了

     }

 }

 #endregion