C# 中怎样将服务器端的文件下载到客户端-CSDN社区

skyinfo 2010-01-19

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up

shinyML 2010-01-18

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[Quote=引用 11 楼 wuyq11 的回复:]
ftpwebrequest下载文件
string filePath = @"";
const string url = "";
try
{
using (WebClient wc = new WebClient())
{
string html = wc.DownloadString(url);
using (StreamWriter writer = new StreamWriter(filePath,false,wc.Encoding))
{
writer.Write(html);
writer.Flush();
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.Read();

[/Quote]

我用的是C# 语言

shinyML 2010-01-16

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[Quote=引用 10 楼 xray2005 的回复:]
C# codepublicbool downfile(string url,string LocalPath)
{try
{
Uri u=new Uri(url);
HttpWebRequest mRequest= (HttpWebRequest)WebRequest.Create(u);
mRequest.Method="GET";
mRequest.ContentType="application/x-www-form-urlencoded";

HttpWebResponse wr= (HttpWebResponse)mRequest.GetResponse();

Stream sIn= wr.GetResponseStream();
FileStream fs=new FileStream(LocalPath, FileMode.Create, FileAccess.Write);long length= wr.ContentLength;long i=0;decimal j=0;while (i < length)
{byte[] buffer=newbyte[1024];
i+= sIn.Read(buffer,0, buffer.Length);
fs.Write(buffer,0, buffer.Length);if((i%1024)==0)
{
j=Math.Round(Convert.ToDecimal((Convert.ToDouble(i)/Convert.ToDouble(length))*100),4);
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节下载进度"+j.ToString()+"%";

}else
{
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节";
}

}

sIn.Close();
wr.Close();
fs.Close();returntrue;
}catch {returnfalse; }
}

OK
[/Quote]

是不是我设置好本地路径后，文件下载完成就在我设置的路径下面啊

shinyML 2010-01-16

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[Quote=引用 4 楼 nimingxin1987 的回复:]
C# codepublicbool downfile(string url,string LocalPath)
{try
{
Uri u=new Uri(url);
HttpWebRequest mRequest= (HttpWebRequest)WebRequest.Create(u);
mRequest.Method="GET";
mRequest.ContentType="application/x-www-form-urlencoded";

HttpWebResponse wr= (HttpWebResponse)mRequest.GetResponse();

Stream sIn= wr.GetResponseStream();
FileStream fs=new FileStream(LocalPath, FileMode.Create, FileAccess.Write);long length= wr.ContentLength;long i=0;decimal j=0;while (i< length)
{byte[] buffer=newbyte[1024];
i+= sIn.Read(buffer,0, buffer.Length);
fs.Write(buffer,0, buffer.Length);if((i%1024)==0)
{
j=Math.Round(Convert.ToDecimal((Convert.ToDouble(i)/Convert.ToDouble(length))*100),4);
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节下载进度"+j.ToString()+"%";

}else
{
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节";
}

}

sIn.Close();
wr.Close();
fs.Close();returntrue;
}catch {returnfalse; }
}
[/Quote]

url 是服务器端得路径吗

那Uri又是什么啊

wuyq11 2010-01-15

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ftpwebrequest下载文件
string filePath = @"";
const string url = "";
try
{
using (WebClient wc = new WebClient())
{
string html = wc.DownloadString(url);
using (StreamWriter writer = new StreamWriter(filePath,false,wc.Encoding))
{
writer.Write(html);
writer.Flush();
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.Read();

xray2005 2010-01-15

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C# codepublicbool downfile(string url,string LocalPath)
{try
{
Uri u=new Uri(url);
HttpWebRequest mRequest= (HttpWebRequest)WebRequest.Create(u);
mRequest.Method="GET";
mRequest.ContentType="application/x-www-form-urlencoded";

HttpWebResponse wr= (HttpWebResponse)mRequest.GetResponse();

Stream sIn= wr.GetResponseStream();
FileStream fs=new FileStream(LocalPath, FileMode.Create, FileAccess.Write);long length= wr.ContentLength;long i=0;decimal j=0;while (i < length)
{byte[] buffer=newbyte[1024];
i+= sIn.Read(buffer,0, buffer.Length);
fs.Write(buffer,0, buffer.Length);if((i%1024)==0)
{
j=Math.Round(Convert.ToDecimal((Convert.ToDouble(i)/Convert.ToDouble(length))*100),4);
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节下载进度"+j.ToString()+"%";

}else
{
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节";
}

}

sIn.Close();
wr.Close();
fs.Close();returntrue;
}catch {returnfalse; }
}

OK

别递烟哥不会 2010-01-15

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web中用网页下载 “打开保存取消”网上代码很多
不知道在winform中能不能用

nimingxin1987 2010-01-15

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  public bool downfile(string url,string LocalPath)

  {

   try

   {

    Uri u = new Uri(url);

    HttpWebRequest mRequest = (HttpWebRequest)WebRequest.Create(u);

    mRequest.Method = "GET";

    mRequest.ContentType = "application/x-www-form-urlencoded";



    HttpWebResponse wr = (HttpWebResponse)mRequest.GetResponse();



    Stream sIn = wr.GetResponseStream();

    FileStream fs = new FileStream(LocalPath, FileMode.Create, FileAccess.Write);



    long length = wr.ContentLength;

    long i = 0;

    decimal j=0;

    

    while (i < length)

    {

     byte[] buffer = new byte[1024];

     i += sIn.Read(buffer, 0, buffer.Length);

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

     

     if((i % 1024)==0)

     {

      j=Math.Round(Convert.ToDecimal((Convert.ToDouble(i)/Convert.ToDouble(length))*100),4);

      statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节   当前下载大小:"+i+"字节 下载进度"+j.ToString()+"%";

      

     }

     else

     {

      statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节   当前下载大小:"+i+"字节";

     }

     

    }



    sIn.Close();

    wr.Close();

    fs.Close();

    return true;

   }

   catch { return false; }

  }

逸客 2010-01-15

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说清楚问题。

liguicd 2010-01-15

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不懂C#只能给梅子顶

wazdoyang 2010-01-15

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簡單的就 <A>

Teng_s2000 2010-01-15

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什么意思啊，VS保护的文件你是没有办法下的啊

别的诸如一些视频，图片，压缩包都可以通过流进行下载的啊

jerry_zhang99 2010-01-15

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学习了

nimingxin1987 2010-01-15

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是的

shinyML 2010-01-15

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[Quote=引用 4 楼 nimingxin1987 的回复:]
C# codepublicbool downfile(string url,string LocalPath)
{try
{
Uri u=new Uri(url);
HttpWebRequest mRequest= (HttpWebRequest)WebRequest.Create(u);
mRequest.Method="GET";
mRequest.ContentType="application/x-www-form-urlencoded";

HttpWebResponse wr= (HttpWebResponse)mRequest.GetResponse();

Stream sIn= wr.GetResponseStream();
FileStream fs=new FileStream(LocalPath, FileMode.Create, FileAccess.Write);long length= wr.ContentLength;long i=0;decimal j=0;while (i< length)
{byte[] buffer=newbyte[1024];
i+= sIn.Read(buffer,0, buffer.Length);
fs.Write(buffer,0, buffer.Length);if((i%1024)==0)
{
j=Math.Round(Convert.ToDecimal((Convert.ToDouble(i)/Convert.ToDouble(length))*100),4);
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节下载进度"+j.ToString()+"%";

}else
{
statusBar1.Text="当前下载文件大小:"+length.ToString()+"字节当前下载大小:"+i+"字节";
}

}

sIn.Close();
wr.Close();
fs.Close();returntrue;
}catch {returnfalse; }
}
[/Quote]

localpath 是不是自己定义的本地路径啊