我该如何下载所有文件？ [英] How can i download all file?

问题描述

大家好，

我已经将excel，word，pdf，notepad，image文件上传到服务器。现在我想下载该文件。

但是当我下载时，某些文件类型（excel，word，notepad）不会显示它们的图标。它只显示硬盘。

这里是我的源代码下载：

Hi all experts,
I have uploaded excel,word,pdf,notepad,image file to server. Now i want to download that file.
but when i download, some file type (excel,word,notepad) don''t display their icon. it just display the harddrive.
here are my source code to download:

String fileName = "English Course.xls";
Response.ContentType="application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
Response.TransmitFile(Server.MapPath("~/SAP/" + fileName));
Response.End();

有谁知道如何下载所有类型的文件？



谢谢

TONY

Does anybody know how to download all type of file?

Thanks
TONY

推荐答案

private void DownloadFile(string filename)
   {
       try
       {
           //Fileinfo class get all Details about user select file.
           FileInfo file = new FileInfo(filename);
           //Checking File is Exists are not using FileInfo object.Exists properties.
           if (file.Exists)
           {
               //Clears all content output from buffer stream.
               Response.ClearContent();
               //ContentType is used to get & set HTTP MIME type of the output stream
               Response.ContentType = "application/octet-stream";
               //AddHeader method is used addHTTP header to the output stream.
               Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
               Response.AddHeader("Content-Length", file.Length.ToString());
               Response.WriteFile(file.FullName);
               //Send all Current buffered output to the client.
               Response.Flush();
               //Clears all Content output from the buffer stream.
               Response.Clear();
           }

       }
       catch (Exception en)
       {
           Response.Write(en.Message.ToString());

       }
   }

亲爱的朋友，



分析代码。



private void loaddetails（）

{

试试

{

//objinfo.IntInformationID = Convert.ToInt32（Request.QueryString [id]）;

objinfo.IntInformationID = Convert.ToInt32（Session [ id]。ToString（））;

DataSet ds = objinfo.GetInformationPdf（）;

if（ds.Tables [0] .Rows.Count> 0）

{

尝试

{

ViewState [filename] = ds.Tables [0] .Rows [0] [strDocument]。ToString（）;

string strPath = string.Empty;

strPath = Server.MapPath（Documents）+\ \+ ViewState [filename]。ToString（）;

FileInfo file = new FileInfo（strPath）;
if（file.Exists）

{



Response.ClearContent（）;

Response.AddHeader（Content-Disposition，filename =+ file.Name）;

Response.AddHeader（Content-Length，file.Length.ToString（））; < br $>


string [] type = ViewState [filename]。ToString（）。Split（''。''）;

if（ type [1] ==doc）

{

Response.ContentType =application / msword;

}

else if（type [1] ==docx）

{

Response.ContentType =application / vnd.msword.document.12;

}

else if（type [1] == pdf）

{

Response.ContentType =application / pdf;

}

文件。 IsReadOnly = true;

Response.TransmitFile（file.FullName）;



Response.End（）;









}

}

catch（Exception ex）

{

Page.RegisterClientScriptBlock（pageClose，< script> alert（''Document Not Available''）;< /脚本>）;

}

}



}

catch（例外情况ex）

{

}

}

Dear Friend,

Analyze the code.

private void loaddetails()
{
try
{
//objinfo.IntInformationID = Convert.ToInt32(Request.QueryString["id"]);
objinfo.IntInformationID = Convert.ToInt32(Session["id"].ToString());
DataSet ds = objinfo.GetInformationPdf();
if (ds.Tables[0].Rows.Count > 0)
{
try
{
ViewState["filename"] = ds.Tables[0].Rows[0]["strDocument"].ToString();
string strPath = string.Empty;
strPath = Server.MapPath("Documents") + "\\" + ViewState["filename"].ToString();
FileInfo file = new FileInfo(strPath);
if (file.Exists)
{

Response.ClearContent();
Response.AddHeader("Content-Disposition", "filename=" + file.Name);
Response.AddHeader("Content-Length", file.Length.ToString());

string[] type = ViewState["filename"].ToString().Split(''.'');
if (type[1] == "doc")
{
Response.ContentType = "application/msword";
}
else if (type[1] == "docx")
{
Response.ContentType = "application/vnd.msword.document.12";
}
else if (type[1] == "pdf")
{
Response.ContentType = "application/pdf";
}
file.IsReadOnly = true;
Response.TransmitFile(file.FullName);

Response.End();




}
}
catch (Exception ex)
{
Page.RegisterClientScriptBlock("pageClose", "<script>alert(''Document Not Available'');</script>");
}
}

}
catch (Exception ex)
{
}
}

在上述解决方案中如果Response.Wri teFile不起作用;然后尝试使用相同参数的Response.Redirect。

In the Above Solutions if "Response.WriteFile" doesnot works; then try "Response.Redirect" with same parameters.

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