asp.net 中兩種不同方式檔案流下載的區別？

請問下面兩種方式的區別是？

HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.ContentEncoding = 
	System.Text.Encoding.GetEncoding("utf-8");
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;  
	filename=" + HttpUtility.UrlEncode(downloadFile.Name, System.Text.Encoding.UTF8));
HttpContext.Current.Response.AddHeader("Content-Range", "bytes 0-800/801");
HttpContext.Current.Response.AddHeader("Content-Length", downloadFile.Length.ToString());
HttpContext.Current.Response.TransmitFile(downloadFile.FullName);; 
HttpContext.Current.ApplicationInstance.CompleteRequest();

HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Buffer = false;
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AppendHeader("Content-Disposition", 
	"attachement;filename=" + downloadFile.Name);
HttpContext.Current.Response.AppendHeader("Content-Length", 
	downloadFile.Length.ToString());
HttpContext.Current.Response.WriteFile(downloadFile.Name);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();

謝謝各位牛人來噴~

由龐順龍最後編輯於：4年前

此技術問答作者懸賞 10 個80幣

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