ASP.NET下载文件出现提示框或者直接显示在浏览器中

ASP.NET下载文件出现提示框或者直接显示在浏览器中
技术交流   2008-06-20 11:44   阅读42   评论0  
字号： 大大  中中  小小
1：出现文件下载提示框
string strFile="F:\\a.doc";//路径根据实际情况而定
if(!System.IO.File.Exists(strFile))
  {
    Response.Write("<script language='javascript'>alert('对不起，文件不存在！');</script>");
    return;
  }
  Response.Clear();
  Response.ClearHeaders();
  Response.Charset = "GB2312";
  Response.ContentEncoding =System.Text.Encoding.UTF8;
  Response.ContentType = "application/octet-stream";
  FileInfo fi=new FileInfo(strFile);
  Response.AddHeader("Content-Disposition","attachment;  filename="  +  HttpUtility.UrlEncode(fi.Name)) ;
  Response.AddHeader("Content-Length",fi.Length.ToString());
  byte[] tmpbyte=new byte[1024*8];
  FileStream fs=fi.OpenRead();
  int count;
  while((count=fs.Read(tmpbyte,0,tmpbyte.Length))>0)
  {
    Response.BinaryWrite(tmpbyte);
    Response.Flush();
  }
  fs.Close(); 
  Response.End();
2：直接在浏览器中打开
  string strFile="F:\\a.doc";//路径根据实际情况而定
  Response.Clear();
  Response.ClearHeaders();
  Response.Charset = "GB2312";
  Response.ContentEncoding =System.Text.Encoding.UTF8;
  Response.ContentType = "application/msword";
  Response.WriteFile(strFile);
3：封装成类的文件下载方法的写法
///
/// 在页面中显示下载对话框并下载指定的文件，webPage为页面对象引用（一般赋值Page)，filePath为下载文件虚拟路径，fileName为对话框中显示的文件名
///
public static void DownloadFile(Page webPage, string filePath, string fileName)
{
HttpResponse Response = webPage.Response;
FileInfo aFile = new FileInfo(webPage.Server.MapPath(filePath));
Response.Clear();
Response.ClearHeaders();
Response.BufferOutp