检查开始和结束日期
答
感谢大家的帮助 - 这就是我能得出结论。这是我在我的controller.cs文章中添加的内容:
if (viewModel.BeginDate == null)
viewModel.BeginDate = DateTime.Today.AddMonths(-6);
if (viewModel.EndDate == null)
viewModel.EndDate = DateTime.Today;
if (viewModel.EndDate < viewModel.BeginDate)
ModelState.AddModelError("", "Invalid Date Range");
if (string.IsNullOrEmpty(viewModel.Value))
ModelState.AddModelError("", "No View Selected");