把文件二进制数据存入mongodb

               //存入，photoData.Data为二进制文件数据
　　　　　　　　  var db = GetDB();
                string filename = (new GridFSOP()).GridFsSave(photo.Data);
                MongoDB.Bson.BsonDocument doc = new MongoDB.Bson.BsonDocument();
                doc["PhotoID"] = photo.PhotoID;
                doc["Name"] =  photo.Name;
                doc["Description"] =  photo.Description;
                doc["DateTime"] = photo.DateTime;
                doc["filename"] = filename; 
                db["testTable"].Save(doc);


public static MongoDatabase GetDB()
        {
            return MongoDatabase.Create(ConfigurationManager.ConnectionStrings["MongoDB_feni"].ConnectionString);
        }

MongoDB_feni：mongodb://user:pwd@ip:27277/fenidb