C#中的“无效的列名”

Question

I get an error “Invalid Column Name” in Visual studio even when all the columns are present in the table in Sql Server. Table column Name is AttandanceId but it shows error of “Invalid Column Name” ie. AttandanceId1 which is not present there in Sql Server Table Under Attandance

public IActionResult EmployeeReport(int id)
{
    var viewModel = new AttandanceViewModel();
    var EmployeeList = _dbContext.Employees.ToList();

    viewModel.DropFirstName = new SelectList(EmployeeList, "EmployeeId", "FirstName");
    viewModel.AttList = _dbContext.Attandance.Where(i => i.EmpId == id).ToList();
    ViewBag.Id = id;
    var Count = viewModel.AttList.Count();

    ViewBag.Counts = Count;
    return View(viewModel);
}

Answer 1

i think you made some changes in sql table and then try to update data model, which is not updated successfully eg As you mention AttandanceId and AttandanceId1 which shows conflict.

simply do

• 1: delete your table or complete model and clean your solution.

• 2: add table/model again and build your solution, every think will be
  fine