C# 文件上传和上传文件到服务端

实现文件上传和下载，包含服务器和客户端

对于学习TCP的同学有帮助

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Remoting;
using System.IO;
using System.Threading;
namespace Client
{
	public partial class Form1 : Form
	{
		public Form1（）
		{
			InitializeComponent（）;
			System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
            OpenUrl（）;
		}
		long CountLen = 0;
		long Len = 0;
		Remoteobject.Myobject app;
		public void Upload（string filename）
		{
			if（filename==““）
			{
				MessageBox.Show（“请选择要上传的文件!““提示“）;
				return;
			}
			if（!File.Exists（filename））
			{
				MessageBox.Show（“上传的文件不存在!““错误“）;
				return;
			}
			FileStream fs = new FileStream（filename

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      28672  2009-07-29 16:37  Remoteobject\Client\bin\Debug\Client.exe

     文件      36352  2009-07-29 16:37  Remoteobject\Client\bin\Debug\Client.pdb

     文件       5632  2005-12-08 14:51  Remoteobject\Client\bin\Debug\Client.vshost.exe

     文件      16384  2009-07-29 16:33  Remoteobject\Client\bin\Debug\Remoteobject.dll

     文件      13824  2009-07-29 16:33  Remoteobject\Client\bin\Debug\Remoteobject.pdb

     文件       3777  2009-07-29 16:25  Remoteobject\Client\Client.csproj

     文件       6880  2009-07-29 16:37  Remoteobject\Client\Form1.cs

     文件      13154  2009-07-29 16:36  Remoteobject\Client\Form1.Designer.cs

     文件       6627  2009-07-29 16:36  Remoteobject\Client\Form1.resx

     文件        329  2009-07-29 16:28  Remoteobject\Client\Help.cs

     文件       2312  2009-07-29 16:28  Remoteobject\Client\Help.Designer.cs

     文件       6551  2009-07-29 16:28  Remoteobject\Client\Help.resx

     文件        823  2009-07-29 16:40  Remoteobject\Client\obj\Client.csproj.FileListAbsolute.txt

     文件        899  2009-07-29 16:36  Remoteobject\Client\obj\Debug\Client.csproj.GenerateResource.Cache

     文件      28672  2009-07-29 16:37  Remoteobject\Client\obj\Debug\Client.exe

     文件        180  2009-07-29 16:36  Remoteobject\Client\obj\Debug\Client.Form1.resources

     文件        879  2009-07-29 16:33  Remoteobject\Client\obj\Debug\Client.Help.resources

     文件      36352  2009-07-29 16:37  Remoteobject\Client\obj\Debug\Client.pdb

     文件        180  2009-07-29 16:33  Remoteobject\Client\obj\Debug\Client.Properties.Resources.resources

     文件       2570  2009-07-29 16:33  Remoteobject\Client\obj\Debug\ResolveAssemblyReference.cache

     文件        465  2009-06-25 14:27  Remoteobject\Client\Program.cs

     文件       1160  2009-06-25 14:27  Remoteobject\Client\Properties\AssemblyInfo.cs

     文件       2868  2009-06-25 14:27  Remoteobject\Client\Properties\Resources.Designer.cs

     文件       5612  2009-06-25 14:27  Remoteobject\Client\Properties\Resources.resx

     文件       1091  2009-06-25 14:27  Remoteobject\Client\Properties\Settings.Designer.cs

     文件        249  2009-06-25 14:27  Remoteobject\Client\Properties\Settings.settings

     文件      16384  2009-07-29 16:33  Remoteobject\Remoteobject\bin\Debug\Remoteobject.dll

     文件      13824  2009-07-29 16:33  Remoteobject\Remoteobject\bin\Debug\Remoteobject.pdb

     文件       4340  2009-07-16 11:44  Remoteobject\Remoteobject\Myobject.cs

     文件      16384  2009-07-29 16:33  Remoteobject\Remoteobject\obj\Debug\Remoteobject.dll

............此处省略45个文件信息