Asp.net core 如何将where子句应用于现有的IEnumerable<；模型>；用于对记录进行增量筛选

我试图通过有条件地从控制器中提供where子句来过滤记录。我的记录列表是IEnumerable list。如何给IEnumerable指定where条件。 这是我的密码

    public IActionResult UniformIssueList(UniformDeliveryVM uniformDeliveryVM)
{
     var issuesList = _unitOfWork.UniformReceiptRepo.GetUniformDeliveryList(uniformDeliveryVM.FromDate, uniformDeliveryVM.ToDate);
         if (uniformDeliveryVM.DepotNo>=0)
         {
           issuesList  = issuesList.Where(d => d.DepotNo == uniformDeliveryVM.DepotNo
         }
     if (uniformDeliveryVM.DepartmentNo >=0)
         {
           issuesList  = issuesList.Where(d => d.DepartmentNo == uniformDeliveryVM.DepartmentNo
         }
          if (uniformDeliveryVM.EmployeeId >=0)
         {
           issuesList  = issuesList.Where(d => d.EmployeeId == uniformDeliveryVM.EmployeeId
         }
}

---

事实上，您的想法是正确的，您只需要在Where条件之后添加Tolist（）

像这样：

if (uniformDeliveryVM.DepotNo >= 0)
            {
                issuesList = issuesList.Where(d => d.DepotNo == uniformDeliveryVM.DepotNo).ToList();
            };
            if (uniformDeliveryVM.DepartmentNo >= 0)
            {
                issuesList = issuesList.Where(d => d.DepartmentNo == uniformDeliveryVM.DepartmentNo).ToList();
            }
            if (uniformDeliveryVM.EmployeeId >= 0)
            {
                issuesList = issuesList.Where(d => d.EmployeeId == uniformDeliveryVM.EmployeeId).ToList();
            }

希望这能帮助你