OpenFileDialog SaveFileDialog

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 = 2;

 //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)
 {
  //获得文件完整名
  //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

获取OpenFileDialog的文件名和文件路径

System.IO.Path.GetFileName(openFileDialog1.FileName);//得到文件名

System.IO.Path.GetDirectoryName(openFileDialog1.FileName);//得到路径