C#中SaveFileDialog和OpenFileDiaLog 用法

介绍SaveFileDialog以及OpenFileDiaLog的使用，把textbox中的内容通过SaveFileDialog保存到文件中。

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.IO;namespace SaveFileDialog{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 (*.*)|*.*\";//设置文件类型saveFileDialog1.FilterIndex = 1;//设置默认文件类型显示顺序saveFileDialog1.RestoreDirectory = true;//保存对话框是否记忆上次打开的目录//点了保存按钮进入if (saveFileDialog1.ShowDialog() == DialogResult.OK){myStream = new StreamWriter(saveFileDialog1.FileName);myStream.Write(textBox1.Text); //写入myStream.Close();//关闭流}}private void button2_Click(object sender, EventArgs e){OpenFileDialog openDlg = new OpenFileDialog();openDlg.Filter = \"文本文件|*.txt\";// 指定打开文本文件（后缀名为txt）if (openDlg.ShowDialog() == DialogResult.OK){string[] lines = File.ReadAllLines(openDlg.FileName);// 读出文本文件的所以行textBox1.Clear();// 先清空textBox1// 在textBox1中显示foreach (string line in lines){textBox1.AppendText(line + Environment.NewLine);}// 显示文件路径名}}}}