Saving image to server, create dir and upload image Asp.Net C#

[HttpPost]
public ActionResult UploadPicture(UserModel model)
{
    string result = "";
    string path = "";
    string DirectoryName = "";
    string createDirectoryPath = "";
    string DirectoryPath = "";
    string imageToSave = "";
    string imageName = "";
    string Imagepath = "";
    string ImagepathDB = "";

    if (Request.Files.Count > 0)// Checking if image file exists in the request
    {
        //  Getting Image details from the request
        HttpFileCollectionBase files = Request.Files;
        HttpPostedFileBase file = files[0];
        imageName = CurrentUser.PersonId + file.FileName;
        DirectoryName = CurrentUser.PersonId;
        path = "~/Images/ProfileImage/";
        DirectoryPath = path + DirectoryName;
        Imagepath = DirectoryPath + "/";
        imageToSave = Path.Combine(Server.MapPath(Imagepath), imageName);
        createDirectoryPath = Path.Combine(Server.MapPath(path), DirectoryName);
        ImagepathDB = "/Images/ProfileImage/" + DirectoryName + "/" + imageName;

        try //   Uploading image file in the server folder
        {
            if (Directory.Exists(createDirectoryPath))
            {
                System.IO.DirectoryInfo di = new DirectoryInfo(createDirectoryPath);
                foreach (FileInfo fi in di.GetFiles()) // unique folder created for each picture, so delete whole dir
                {
                    fi.Delete();
                } 
            }
            else
            {
                Directory.CreateDirectory(createDirectoryPath);
            }
            file.SaveAs(imageToSave);
            result = "Success";
        }
        catch (Exception ex)
        {
            result = "Error";
        }

        if (result == "Success")//  Inserting the image path in the database
        {
            result = "";
            try
            {
                model.ImagePath = ImagepathDB;
                model.PersonId = Convert.ToInt32(CurrentUser.PersonId);
                var rq = new RestRequest();
                rq.Method = Method.POST;
                rq.Resource = "api/User/UploadPicture";
                rq.AddJsonBody(model);
                var rp = GetApiResponse(rq);
                if (rp.StatusCode == System.Net.HttpStatusCode.OK)
                {
                    result = GetApiRequestObject<string>(rp);
                }
                else
                {
                    result = "Error";
                }
            }
            catch (Exception ex)
            {
                result = "Error";
            }
        }
    }
    else
    {
        result = "Error";
    }

    return Json(result, JsonRequestBehavior.AllowGet);
}
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