C#文件断点续传实现方法
本文实例讲述了C#文件断点续传实现方法。分享给大家供大家参考。具体实现方法如下：
///<summary>
///下载局域网文件
///</summary>
///<paramname="path">文件路径，如：\\192.168.10.1\app\app\123.zip</param>
///<paramname="username">计算机名称</param>
///<paramname="password">计算机密码</param>
staticvoidRequestWindowsShared(stringpath,stringusername,stringpassword)
{
//文件总大小
intallBytesCount=0;
//每次传输大小
intbyteTemp=1024;
//当前位置
intbytePosition=0;
//剩下大小
intremain=0;
System.Net.FileWebRequestrequest=null;
System.Net.FileWebResponseresponse=null;
System.IO.Streamstream=null;
System.IO.FileStreamfileStream=null;
try
{
Uriuri=newUri(path);
request=(System.Net.FileWebRequest)System.Net.FileWebRequest.Create(uri);
System.Net.ICredentialsic=newSystem.Net.NetworkCredential(username,password);
request.Credentials=ic;
response=(System.Net.FileWebResponse)request.GetResponse();
stream=response.GetResponseStream();
byte[]bytes=newbyte[stream.Length];
stream.Read(bytes,0,bytes.Length);
stringfilename=System.Environment.GetFolderPath(Environment.SpecialFolder.Desktop)+"\\"+System.IO.Path.GetFileName(path);
fileStream=newFileStream(filename,System.IO.FileMode.Create,System.IO.FileAccess.Write,System.IO.FileShare.ReadWrite);
allBytesCount=bytes.Length;
remain=allBytesCount;
while(remain>0)
{
fileStream.Write(bytes,bytePosition,byteTemp);
remain=remain-byteTemp;
bytePosition=bytePosition+byteTemp;
fileStream.Flush();
if(remain<byteTemp)
byteTemp=remain;
}
Console.WriteLine("下载成功!");
}
catch(Exceptionex)
{
Console.WriteLine(ex.Message);
}
finally
{
fileStream.Close();
fileStream.Dispose();
stream.Close();
stream.Dispose();
}
}
///<summary>
///上传文件
///</summary>
///<paramname="path">共享目录路径+文件名称</param>
///<paramname="local">本地路径</param>
///<paramname="username">用户名</param>
///<paramname="password">密码</param>
staticvoidResponseWindowsShared(stringpath,stringlocal,stringusername,stringpassword)
{
//文件总大小
intallBytesCount=0;
//每次传输大小
intbyteTemp=1024;
//当前位置
intbytePosition=0;
//剩下大小
intremain=0;
System.Net.FileWebRequestrequest=null;
System.IO.Streamstream=null;
try
{
//时间戳
stringstrBoundary="----------"+DateTime.Now.Ticks.ToString("x");
Uriuri=newUri(path);
byte[]bytes=System.IO.File.ReadAllBytes(local);
request=(System.Net.FileWebRequest)System.Net.FileWebRequest.Create(uri);
request.Method="POST";
//设置获得响应的超时时间（300秒）
request.Timeout=300000;
request.ContentType="multipart/form-data;boundary="+strBoundary;
request.ContentLength=bytes.Length;
System.Net.ICredentialsic=newSystem.Net.NetworkCredential(username,password);
request.Credentials=ic;
stream=request.GetRequestStream();
allBytesCount=bytes.Length;
remain=allBytesCount;
while(remain>0)
{
stream.Write(bytes,bytePosition,byteTemp);
remain=remain-byteTemp;
bytePosition=bytePosition+byteTemp;
stream.Flush();
if(remain<byteTemp)
byteTemp=remain;
}
Console.WriteLine("上传成功!");
}
catch(Exceptionex)
{
Console.WriteLine(ex.Message);
}
finally
{
stream.Close();
stream.Dispose();
}
}
希望本文所述对大家的C#程序设计有所帮助。