MVC File Download

Method 1:

/// <Summary>

/// File Download class
/// Call 1: downloadfile ("/2003.xls", null );
/// Call 2: downloadfile ("/2003.xls ","");
/// Call 3: downloadfile ("/2003.xls"," temp.xls ");
/// </Summary>
/// <Param name = "filepath"> file path (Format:/upload/2003.xls) </param>
/// <Param name = "FILENAME"> Custom file name (if you do not want to customize a file name, upload ["" or null]) </param>

Public actionresult downfile (string filepath, string filename)

1. {
2. Filepath = server. mappath (system. configuration. configurationmanager. deleetpipeline ["attachmentpath"] + filepath );
3. Filestream FS = new filestream (filepath, filemode. Open );
4. Byte [] bytes = new byte [(INT) fs. Length]; // download an object as a response stream
   
   
5. FS. Read (bytes, 0, bytes. Length );
6. FS. Close ();
7. Response. charset = "UTF-8 ";
8. Response. contentencoding = system. Text. encoding. getencoding ("UTF-8 ");
9. Response. contenttype = "application/octet-stream"; // notify the browser to download the file instead of opening it
   
   
11. Response. addheader ("content-disposition", "attachment; filename =" + server. urlencode (filename ));
12. Response. binarywrite (bytes );
13. Response. Flush ();
14. Response. End ();
15. Return new emptyresult ();
17. }
    

Method 2:

Public filestreamresult downfile (string filepath, string filename)
{
String absolufilepath = server. mappath (system. configuration. configurationmanager. deleettings ["attachmentpath"] + filepath );
Return file (New filestream (absolufilepath, filemode. Open), "application/octet-stream", server. urlencode (filename ));
}

Call method:

<A href = "/document/downfile? Filepath = @ item. Value & filename = @ item. Key "> download </a>