MongoDB GridFs with C#, how to store files such as images?

Question

I'm developing a web app with mongodb as my back-end. I'd like to have users upload pictures to their profiles like a linked-in profile pic. I'm using an aspx page with MVC2 and I read that GridFs library is used to store large file types as binaries. I've looked everywhere for clues as how this is done, but mongodb doesn't have any documentation for C# api or GridFs C#. I'm baffled and confused, could really use another set of brains.

Anyone one know how to actually implement a file upload controller that stores an image uploaded by a user into a mongodb collection? Thanks a million!

I've tried variations of this to no avail.

Database db = mongo.getDB("Blog"); GridFile file = new GridFile(db); file.Create("image.jpg");  var images = db.GetCollection("images"); images.Insert(file.ToDocument()); 

Answer 1

Following example show how to save file and read back from gridfs(using official mongodb driver):

 var server = MongoServer.Create("mongodb://localhost:27020");  var database = server.GetDatabase("tesdb");   var fileName = "D:\\Untitled.png";  var newFileName = "D:\\new_Untitled.png";  using (var fs = new FileStream(fileName, FileMode.Open))  {     var gridFsInfo = database.GridFS.Upload(fs, fileName);     var fileId = gridFsInfo.Id;      ObjectId oid= new ObjectId(fileId);     var file = database.GridFS.FindOne(Query.EQ("_id", oid));      using (var stream = file.OpenRead())     {        var bytes = new byte[stream.Length];        stream.Read(bytes, 0, (int)stream.Length);        using(var newFs = new FileStream(newFileName, FileMode.Create))        {          newFs.Write(bytes, 0, bytes.Length);        }      }  } 

Results:

File:

Chunks collection:

Hope this help.