Question

所以我正在尝试使用本指南学习ASP.net，AJAX，Json和JQuery： http://www.search-this.com/2010/04/26/asp-net-linq-jquery-json-ajax-oh-my/#

但是，我甚至无法让第一部分代码正常工作。

public class CourseReservations
{
    public long CourseId { get; set; }
    public string Course { get; set; }
    public string Time { get; set; }
    public int Holes { get; set; }
    public int Golfers { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

[WebMethod]
public List<CourseReservations> GetGolfCourseReservations()
{
    using (DataContext dc = new DataContext()) // Creating the Error, it says that I can't have a DataContext constructor that takes 0 arguments... I am just questioning how this code can work for him then??
    {
        var query = from res in dc.GolfReservations // I get an Error here too, saying there is no definition for GolfReservations
                    where res.CourseId == 1
                    select new CourseReservations
                    {
                        CourseId = res.CourseId,
                        Course = res.GolfCourse.CourseName,
                        Time = res.DataAndTime.ToShortTimeString(),
                        Holes = res.Holes,
                        Golfers = res.Golfers,
                        FirstName = res.Aspnet_User.GolfUser.FirstName,
                        LastName = res.Aspnet_User.GolfUser.LastName,
                    };

        return query.ToList();
    }
}

希望有人可以提供帮助！

Answer 1

请尝试使用本教程。你正在使用的那个看起来有点过时了。

https://www.asp.net/mvc/overview/getting-started/getting-started-with-ef-using-mvc/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application

创建DataContext实例时出错

1 个答案: