利用XMLHTTP下载文件-ASP教程,XML相关

利用xmlhttp下载文件，和以前的方法一样，先添加引用－com－microsoft xml 3.0，然后在代码开始处写：

using msxml2;

下面就是主要的代码：

private void page_load(object sender, system.eventargs e)

{

string url = "http://dotnet.aspx.cc/images/logosite.gif";

string stringfilename = url.substring(url.lastindexof("/") + 1);

string stringfilepath = request.physicalapplicationpath;

if(!stringfilepath.endswith("/")) stringfilepath += "/";

msxml2.xmlhttp _xmlhttp = new msxml2.xmlhttpclass();

_xmlhttp.open("get",url,false,null,null);

_xmlhttp.send("");

if( _xmlhttp.readystate == 4 )

{

if(system.io.file.exists(stringfilepath + stringfilename))

system.io.file.delete(stringfilepath + stringfilename);

system.io.filestream fs = new system.io.filestream(stringfilepath + stringfilename, system.io.filemode.createnew);

system.io.binarywriter w = new system.io.binarywriter(fs);

w.write((byte[])_xmlhttp.responsebody);

w.close();

fs.close();

response.write ("文件已经得到。<br><a href=" + request.applicationpath + stringfilename +" target=_blank>");

response.write ("查看" + stringfilename + "</a>");

}

else

response.write (_xmlhttp.statustext);

response.end();

}