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.Net;
using?System.IO;

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

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????try
????????????{
????????????????WebClient?webClient?=?new?WebClient（）;
????????????????if（!File.Exists（@“E:/diangdang.png“））
????????????????{
????????????????????webClient.DownloadFile（“http://localhost/image/dingdang.png““dingdang.png“）;

????????????}
????????????????pictureBox1.Image?=?Image.FromFile（@“E:/dingdang.png“）;
????????????}

????????????catch（Exception?ex）{
????????????????MessageBox.Show（ex.ToString（））;
????????????????}
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2012-11-02?10:45??第一章\
?????目錄???????????0??2012-11-02?11:50??第一章\example\
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\
?????文件????????2977??2012-11-02?11:42??第一章\example\example\Form1.Designer.cs
?????文件?????????952??2012-11-02?11:42??第一章\example\example\Form1.cs
?????文件???????42482??2012-11-02?11:42??第一章\example\example\Form1.resx
?????文件?????????488??2012-11-02?10:49??第一章\example\example\Program.cs
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\Properties\
?????文件????????1346??2012-11-02?10:49??第一章\example\example\Properties\AssemblyInfo.cs
?????文件????????2862??2012-11-02?10:49??第一章\example\example\Properties\Resources.Designer.cs
?????文件????????5612??2012-11-02?10:49??第一章\example\example\Properties\Resources.resx
?????文件????????1090??2012-11-02?10:49??第一章\example\example\Properties\Settings.Designer.cs
?????文件?????????249??2012-11-02?10:49??第一章\example\example\Properties\Settings.settings
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\bin\
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\bin\Debug\
?????文件???????24016??2012-11-02?11:29??第一章\example\example\bin\Debug\dingdang.png
?????文件???????33280??2012-11-02?11:29??第一章\example\example\bin\Debug\example.exe
?????文件???????22016??2012-11-02?11:29??第一章\example\example\bin\Debug\example.pdb
?????文件???????11600??2012-11-02?11:29??第一章\example\example\bin\Debug\example.vshost.exe
?????文件?????????490??2010-03-17?22:39??第一章\example\example\bin\Debug\example.vshost.exe.manifest
?????文件????????3673??2012-11-02?11:25??第一章\example\example\example.csproj
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\obj\
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\obj\x86\
?????目錄???????????0??2012-11-02?11:50??第一章\example\example\obj\x86\Debug\
?????文件????????2152??2012-11-02?10:49??第一章\example\example\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????6154??2012-11-02?11:29??第一章\example\example\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????494??2012-11-02?11:25??第一章\example\example\obj\x86\Debug\GenerateResource.read.1.tlog
?????文件?????????418??2012-11-02?11:25??第一章\example\example\obj\x86\Debug\GenerateResource.write.1.tlog
?????目錄???????????0??2012-11-26?22:45??第一章\example\example\obj\x86\Debug\TempPE\
?????文件???????24733??2012-11-02?11:25??第一章\example\example\obj\x86\Debug\example.Form1.resources
?????文件?????????180??2012-11-02?11:25??第一章\example\example\obj\x86\Debug\example.Properties.Resources.resources
............此處省略430個文件信息