【小技巧】C#的saveFileDialog和openFileDialog的用法总结

 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Windows.Forms;

 using System.IO;

 namespace WindowsFormsApplication1
 {
     public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }

         private void button1_Click(object sender, EventArgs e)
         {
             StreamWriter myStream;
             saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
             saveFileDialog1.RestoreDirectory = true;
             if (saveFileDialog1.ShowDialog() == DialogResult.OK)
             {
                 string str;
                 str = saveFileDialog1.FileName;
                 myStream = new StreamWriter(saveFileDialog1.FileName);
                 myStream.Write(textBox1.Text);
                 myStream.Flush();
                 myStream.Close();
             }
         }

         private void button2_Click(object sender, EventArgs e)
         {
             string resultFile;
             OpenFileDialog openFileDialog1 = new OpenFileDialog();
             openFileDialog1.InitialDirectory = "D:\\";
             openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
             openFileDialog1.RestoreDirectory = true;
             if (openFileDialog1.ShowDialog() == DialogResult.OK)
             {
                 resultFile = openFileDialog1.FileName;
                 MessageBox.Show(resultFile);
             }
         }

         private void Form1_Load(object sender, EventArgs e)
         {

         }
     }
 }