asp.net 文件下载实现代码

答案：
复制代码 代码如下:

/// <summary> 
/// 文件下载 
/// </summary> 
/// <param name="savename">文件名</param> 
/// <param name="FullFileName">文件全名</param> 
/// <param name="Response">Response</param> 
public static void savefile(string savename,string FullFileName,System.Web.HttpResponse Response) 
{ 
try 
{ 
FileInfo DownloadFile = new FileInfo(FullFileName); 
if (DownloadFile.Exists) 
{ 
Response.Clear(); 
Response.ClearHeaders(); 
Response.Buffer = false; 
Response.ContentType = "application/octet-stream"; 
Response.AppendHeader("Content-Disposition", "attachment;filename="+ System.Web.HttpUtility.UrlEncode(savename,System.Text.Encoding.UTF8)); 
Response.AppendHeader("Content-Length", DownloadFile.Length.ToString()); 
Response.WriteFile(DownloadFile.FullName); 
Response.Flush(); 
Response.End(); 
} 
else 
{ 
//文件不存在 
} 
} 
catch 
{ 
//文件不存在 
} 
} 

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