HTTP协议下用Web Service上传大文件的解决方案

using System; 
using System.IO; 
using Microsoft.Web.Services2; 
using Microsoft.Web.Services2.Dime; 

namespace Webb.WAVE.WinUpload 
{ 
/**//// <summary> 
/// Summary description for Controls. 
/// </summary> 
public class UploadInstance2 
{ 
Fields#region Fields 
private string m_GUID; 
private DateTime m_uploadTime; 
private long m_fileLength; 
private long m_currentPoint; 
private string m_pathOnserver; 
private long m_userID; 
#endregion 

Properties#region Properties 
public long UserID 
{ 
get{return this.m_userID;} 
set{this.m_userID=value;} 
} 
public string GUID 
{ 
get{return this.m_GUID;} 
set{this.m_GUID=value;} 
} 
public DateTime UploadTime 
{ 
get{return this.m_uploadTime;} 
set{} 
} 
public long FileLength 
{ 
get{return this.m_fileLength;} 
set{this.m_fileLength=value;} 
} 
public long CurrentPoing 
{ 
get{return this.m_currentPoint;} 
set{this.m_currentPoint=value;} 
} 
public string PathOnServer 
{ 
get{return this.m_pathOnserver;} 
set{this.m_pathOnserver=value;} 
} 
public string FullPathOnServer 
{ 
get 
{ 
if(this.m_GUID!=string.Empty&&this.m_pathOnserver!=string.Empty) 
{ 
return Path.Combine(this.m_pathOnserver,this.m_GUID+".rem"); 
} 
else 
{ 
return string.Empty; 
} 
} 
} 
public string FileName 
{ 
get 
{ 
if(this.m_GUID!=string.Empty) 
{ 
return this.m_GUID+".rem"; 
} 
else 
{ 
return string.Empty; 
} 
} 
} 

#endregion 

public UploadInstance2() 
{ 
this.m_GUID = System.Guid.NewGuid().ToString(); 
this.m_uploadTime = System.DateTime.Now; 
this.m_currentPoint = 0; 
this.m_fileLength = 0; 
this.m_pathOnserver = string.Empty; 
} 
public UploadInstance2(string i_path,string i_GUID,long i_fileLength) 
{ 
string m_fullPath = Path.Combine(i_path,i_GUID); 
if(!File.Exists(m_fullPath)) return; 
this.m_GUID = i_GUID; 
this.m_uploadTime = System.DateTime.Now; 
this.m_pathOnserver = i_path; 
FileInfo m_fileInfo = new FileInfo(m_fullPath); 
this.m_currentPoint = m_fileInfo.Length; 
this.m_fileLength = i_fileLength; 
} 

public bool UploadData(byte[] i_data, long i_currentPoint, int i_dataSize) 
{ 
string m_fullPath = this.FullPathOnServer; 
if(!File.Exists(m_fullPath)&&this.m_currentPoint!=0)return false; 
long m_filePoint = new FileInfo(m_fullPath).Length; 
if(m_filePoint!=i_currentPoint) return false; 
FileStream m_fileStream = new FileStream(m_fullPath,FileMode.Append); 
m_fileStream.Write(i_data,0,i_dataSize); 
m_fileStream.Close(); 
return true; 
} 

public void AbandantUpload() 
{ 
string m_fullPath = this.FullPathOnServer; 
try{File.Delete(m_fullPath);} 
catch{} 
} 

public void CreateFile() 
{ 
string m_fullPath = this.FullPathOnServer; 
if(!File.Exists(m_fullPath)) 
{ 
File.Create(m_fullPath).Close(); 
} 
else 
{ 
try 
{ 
File.Delete(m_fullPath); 
}catch{} 
File.Create(m_fullPath).Close(); 
} 
} 
} 
} 

#region UploadProcess 
public void UploadProcess() 
{ 
DateTime m_start = DateTime.Now; 
this.textBox_OutMsg.AppendText("Initialize upload\r\n"); 
if(this.m_upload==null||this.m_uploadGUID==null||this.m_uploadGUID==string.Empty) 
{  
this.textBox_OutMsg.AppendText("Upload instance id error or login to the server faild\r\n"); 
this.textBox_OutMsg.AppendText("Upload faild.\r\n"); 
return; 
} 
this.textBox_OutMsg.AppendText("Open file\r\n"); 
if(this.m_filePath==null||this.m_filePath==string.Empty||!File.Exists(this.m_filePath)) 
{ 
this.textBox_OutMsg.AppendText("Open file error\r\n"); 
this.textBox_OutMsg.AppendText("Upload faild.\r\n"); 
return; 
} 
FileInfo m_fileInfo = new FileInfo(this.m_filePath); 
FileStream m_fs = new FileStream(this.m_filePath, FileMode.Open, FileAccess.Read); 
this.textBox_OutMsg.AppendText("Start upload file\r\n"); 
int m_buffer = 10; //KBytes 
long m_currentPoint = 0; 
long m_fileLength = m_fileInfo.Length; 
bool m_uploadResult = false; 
byte[] m_data = new byte[m_buffer*1024]; 
long m_readBytes = m_fs.Read(m_data, 0, m_buffer*1024); 
this.UploadProcessBar.Maximum = 100; 
this.UploadProcessBar.Minimum = 0; 
while(m_readBytes>0) 
{ 
MemoryStream m_memoryStream = new MemoryStream(m_data, 0,(int)m_readBytes); 
DimeAttachment dimeAttach = new DimeAttachment("image/gif", TypeFormat.MediaType, m_memoryStream); 
this.m_upload.RequestSoapContext.Attachments.Add(dimeAttach); 
m_uploadResult = this.m_upload.UploadFileData(this.m_uploadInstance,m_currentPoint,m_readBytes); 
if(m_uploadResult) 
{ 
m_currentPoint +=m_readBytes; 
m_readBytes = m_fs.Read(m_data,0,m_buffer*1024); 
// this.textBox_OutMsg.AppendText("Uploading:"+m_currentPoint.ToString()+"/"+m_fileLength.ToString()+"\r\n"); 
this.UploadProcessBar.Value = (int)(m_currentPoint*100/m_fileLength); 
this.label_outPercent.Text = this.UploadProcessBar.Value.ToString()+"%"; 
} 
else 
{ 
this.textBox_OutMsg.AppendText("Upload file error.\r\n"); 
m_fs.Close(); 
this.m_upload.AbandantUpload(this.m_uploadInstance); 
return; 
} 
} 
this.textBox_OutMsg.AppendText("File upload finished.\r\n"); 
this.button_Cancel.Enabled = false; 
m_fs.Close(); 
this.ResetForm(); 
} 
#endregion