在.NET中利用XMLHTTP下载文件

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:

<xmp>using MSXML2; </xmp>

下面就是主要的代码:

<xmp>private void Page_Load(object sender, System.EventArgs e) { string Url = &amp;quot;http://dotnet.aspx.cc/Images/logoSite.gif&amp;quot;; string StringFileName = Url.Substring(Url.LastIndexOf(&amp;quot;/&amp;quot;) + 1); string StringFilePath = Request.PhysicalApplicationPath; if(!StringFilePath.EndsWith(&amp;quot;/&amp;quot;)) StringFilePath += &amp;quot;/&amp;quot;; MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass(); _xmlhttp.open(&amp;quot;GET&amp;quot;,Url,false,null,null); _xmlhttp.send(&amp;quot;&amp;quot;); 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 (&amp;quot;文件已经得到。&amp;lt;br&amp;gt;&amp;lt;a href=&amp;#39;&amp;quot; + Request.ApplicationPath + StringFileName +&amp;quot;&amp;#39; target=&amp;#39;_blank&amp;#39;&amp;gt;&amp;quot;); Response.Write (&amp;quot;查看&amp;quot; + StringFileName + &amp;quot;&amp;lt;/a&amp;gt;&amp;quot;); } else Response.Write (_xmlhttp.statusText); Response.End(); } </xmp>

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