C#中SaveFileDialog和OpenFileDiaLog 用法
2020-04-24 08:16
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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 } } } }
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