How to transfer image file from view to controller

[HttpPost]
        public ActionResult uploadOrganisationImage(FormCollection collection)
        {
            System.Guid guid = System.Guid.NewGuid();
            try
            {

                string OrganisationImg = collection.Get("OrganisationImg");               
                string Filename = "";
                string FileExtension = "";
                string[] parts;
                byte[] img;
                if (OrganisationImg != null)
                {

                    parts = this.HttpContext.Request.Files[0].FileName.Split(new char[] { '\\' });
                    Filename = parts[parts.Length - 1];
                    FileExtension = Filename.Split(new char[] { '.' })[1];
                    img = new byte[Request.Files[0].ContentLength];

                    using (BinaryWriter writer = new BinaryWriter(new FileStream(Server.MapPath("../Content/" + OrganisationID + "/images") + "\\" + guid.ToString() + "." + FileExtension, FileMode.Create)))
                    {
                        Request.Files[0].InputStream.Read(img, 0, Request.Files[0].ContentLength);
                        writer.Write(img);
                    }
                    
                        orgConfig.saveOrganisationImage(long.Parse(OrganisationID), guid.ToString() + "." + FileExtension); (business logic goes here)
                }

                string xml = orgConfig.getOrgCSSConfig(long.Parse(OrganisationID));

                return this.Content(utilS.xslTransform(Server.MapPath("../Views/OrganisationConfig/xsl/ImageGrid.xslt"), xml.ToString()
                    , new string[][] { 
                        new string[] { "OrganisationID", OrganisationID.ToString() },
                        new string[] { "Time", this.Time.ToString()},
                        new string[] {"ApplicationRoleID",this.RoleID.ToString()}
                    }));
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
                return View();
            }
        }