MVC Download files. How do I do it.

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I have written this code to query my database for the dynamic path created which works.

C#

public List<MyCombinedQueryModel> Files(int? id)
         {
             

              var uploads = (from u in _db.Patients
                            where u.PatientsId == id
                            select u.FilesUrl).FirstOrDefault();


              if (uploads != null)
              {
                   var dir = new DirectoryInfo(uploads);

                   IEnumerable<FileInfo> filelist = dir.EnumerateFiles("*.*", SearchOption.AllDirectories);

                   var query = (from file in filelist
                                where file.Length > 0
                                let fileName = file.Name
                                select new MyCombinedQueryModel
                                            {
                                                 FileName = file.Name
                                            }).ToList();


                   return query; 
              }
              return null;
         }

My MVC Html display iterates and list all files in the chosen filed folder.

HTML

<div class="display-label">Uploaded Documents</div>
          
          <div class="display-field">
               <tr>
                    <th>FileName</th>
                    <th>Download Files</th>
               </tr>
               
              
                    @foreach (var file in ((IEnumerable<MyCombinedQueryModel>) ViewBag.Files))
                    {<tr>
                          <td>
                               @Html.ActionLink("Download", "Download", new { id = Model.PatientsId, file.FileName })
                          </td>
                          <td>
                           @file.FileName
                          </td>
                     </tr>
                         
                    }
              </div>

Now I am trying to create code to allow user to download files by selection.
if the above c#, mvc html finds six files. Whatever file I choose with the link download I need to download those files.

The @file.FileName is grayed out and read only.

C#

public ActionResult Download(int id)
         {
              
              
              var uploads = (from u in _db.Patients
                            where u.PatientsId == id
                            select u.FilesUrl).FirstOrDefault();


              if (uploads != null)
              {
                   string folder = Path.GetFullPath(uploads);
                   return File(folder, "", "");
              }

         }

Posted 12-Apr-12 10:07am

postonoh

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postonoh · Accepted Answer · 2012-04-14T01:36:00

problem solved thanks

HTML

<div class="display-label">Uploaded Documents</div>
          
          <div class="display-field">
               <tr>
                    <th>FileName</th>
                    <th>Download Files</th>
               </tr>
               
              
                    @foreach (var file in ((IEnumerable<mycombinedquerymodel>)ViewBag.Files))
                    {<tr>
                          <td>
                               @Html.ActionLink("Download", "Download", new { id = Model.PatientsId, name = file.FileName })
                          </td>
                          <td>
                            @file.FileName
                           </td>
                     </tr>
                         
                    }
              </mycombinedquerymodel></div>

behind code.

C#

public ActionResult Download(int? id, string name)
        {


             string fileName = name;


             var uploads = (from u in _db.Patients
                           where u.PatientsId == id
                           select u.FilesUrl).FirstOrDefault();


             if (uploads != null)
             {

                  string folder = Path.GetFullPath(uploads);
                  //HttpContext.Response.AddHeader("content-dispostion", "attachment; filename=" + fileName);
                  return File(new FileStream(folder +"/" + fileName, FileMode.Open), "content-dispostion", fileName);
             }

             throw new ArgumentException("Invalid file name of file not exist");
        }