public async Task <IActionResult> LoadCast() { string jsonString = ReadWriteFile.ReadJson(@"g:\Cast.json"); List <CastModel> CastList = JsonConvert.DeserializeObject <List <CastModel> >(jsonString); // Clear DBSet doruContext.CastSet.RemoveRange(doruContext.CastSet); foreach (var Cast in CastList) { doruContext.CastSet.Add(Cast); } await doruContext.SaveChangesAsync(); return(NoContent()); }