public class UploadPart  
    {  
        [Key]  
        public string UploadPartKey { get; set; }  
        public int fileID { get; set; }  
        public int ordinal { get; set; }  
        public int statusUpload { get; set; }  
    }  

        public UploadPart UploadFilePart(int fileID, int ordinal,  
                bool overwrite, byte[] fileData)  
        {  
  
            // return values:  
            // 0 = Not inserted  
            // 1 = Already exists  
            // 2 = Inserted or updated  
  
            int ret = 0;  
            // Upload a new file part to the database  
  
  
   ...........  
   
            UploadPart risposta = new UploadPart();  
            risposta.UploadPartKey = "1";  
            risposta.fileID = fileID;  
            risposta.ordinal = ordinal;  
            risposta.statusUpload = ret;  
            return risposta;  
            //return ret;  
        }