下载后如何打开Word / Excel文件

Question

I am using below code to download word/excel files. How i can open this file automatically after downloading ?

private void DownloadFile(byte[] bArray, string mimeType, string KeyPath, bool bForcedownload)
        {
            Response.ContentType = mimeType;
            if (bForcedownload)
                Response.AppendHeader("Content-disposition",
                    "attachment; filename=" + Path.GetFileName(KeyPath));
            Response.AppendHeader("content-length", bArray.Length.ToString());
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.AppendHeader(@"Pragma", @"no-cache");
            Response.BinaryWrite(bArray);
            FlushSupressReponse();
        }

private void FlushSupressReponse()
        {
            HttpContext.Current.Response.Flush(); 
            HttpContext.Current.Response.SuppressContent = true;  
            HttpContext.Current.ApplicationInstance.CompleteRequest(); 
        }

Answer 1

Your comment:

We have UI which runs on browser , user click on filename and file gets downloaded...but user need to click on file to open it but i want to open it automatically once it is downloaded.

You can't. This is entirely the option of the user. You cannot force the user of a website to automatically open a file after downloading.

That is intentionally so, since it would be very easy to distribute viruses that way.

However, you can give your users instructions on how to configure their browser to automatically open files of certain types. For example, in Chrome, after you download a file, there is an arrow beside the file name. Click on that and there is an option to "Automatically Open Files of This Type".

But it's still up to your users to do it.