public IEnumerable <TextileNameMapping> GetTextileNameMappings() { var textileNameMappingFilePath = string.Concat(AppSettingConfig.TextileNameMappingFilePath()); //this code segment read data from the file. FileStream fs2 = new FileStream(textileNameMappingFilePath, FileMode.Open, FileAccess.Read); StreamReader reader = new StreamReader(fs2); var cacheJson = reader.ReadToEnd(); IEnumerable <TextileNameMapping> textileNameMappings = JsonConvert.DeserializeObject <IEnumerable <TextileNameMapping> >(cacheJson); reader.Close(); return(textileNameMappings); }