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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 _10打开对话框

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

//点击弹出对话框

OpenFileDialog ofd = new OpenFileDialog();

//设置对话框的标题

ofd.Title = "请选择要打开的文本文件哟亲 O(∩_∩)O~";

//设置对话框可以多选

ofd.Multiselect = true;

//设置对话框的初始目录

ofd.InitialDirectory = @"C:甥敳獲SpringRainDesktop";

//设置对话框的文件类型

ofd.Filter = "文本文件|*.txt|媒体文件|*.wmv|图片文件|*.jpg|所有文件|*.*";

//展示对话框

ofd.ShowDialog();

//获得在打开对话框中选中文件的路径

string path = ofd.FileName;

if (path == "")

{

return;

}

using (FileStream fsRead = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Read))

{

byte[] buffer = new byte[1024 * 1024 * 5];

//实际读取到的字节数

int r = fsRead.Read(buffer, 0, buffer.Length);

textBox1.Text = Encoding.Default.GetString(buffer, 0, r);

}

}

}

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace _10打开对话框

{

static class Program

{

///

/// 应用程序的主入口点。

///

[STAThread]

static void Main()

{

Application.EnableVisualStyles();

Application.SetCompatibleTextRenderingDefault(false);

Application.Run(new Form1());

}

}

}

11、保存文件对话框

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace _11_保存文件对话框

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

SaveFileDialog sfd = new SaveFileDialog();

sfd.Title = "请选择要保存的路径";

sfd.InitialDirectory = @"C:甥敳獲SpringRainDesktop";

sfd.Filter = "文本文件|*.txt|所有文件|*.*";

sfd.ShowDialog();

//获得保存文件的路径

string path = sfd.FileName;

if (path == "")

{

return;

}

using (FileStream fsWrite = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write))

{

byte[] buffer = Encoding.Default.GetBytes(textBox1.Text);

fsWrite.Write(buffer, 0, buffer.Length);

}

MessageBox.Show("保存成功");

}

}

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace _11_保存文件对话框

{

static class Program

{

///

/// 应用程序的主入口点。

///

[STAThread]

static void Main()

{

Application.EnableVisualStyles();

Application.SetCompatibleTextRenderingDefault(false);

Application.Run(new Form1());

}

}

}