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Start your free trialAlexander Olson
13,067 PointsDeleting an Entity:
Feel like I'm close...
Repository.cs(63,43): error CS1922: A field or property Treehouse.CodeChallenges.Course' cannot be initialized with a collection object initializer because type
Treehouse.CodeChallenges.Course' does not implement `System.Collections.IEnumerable' interface
Compilation failed: 1 error(s), 0 warnings
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
namespace Treehouse.CodeChallenges
{
public static class Repository
{
public static List<Course> GetCourses()
{
using (var context = new Context())
{
return context.Courses
.OrderBy(c => c.Teacher.LastName)
.ThenBy(c => c.Teacher.FirstName)
.ToList();
}
}
public static List<Course> GetCoursesByTeacher(string lastName)
{
using (var context = new Context())
{
return context.Courses
.Where(c => c.Teacher.LastName == lastName)
.ToList();
}
}
public static Course GetCourse(int id)
{
using (var context = new Context())
{
return context.Courses
.Include(c => c.Teacher)
.SingleOrDefault(c => c.Id == id);
}
}
public static void AddCourse(Course course)
{
using (var context = new Context())
{
context.Courses.Add(course);
context.SaveChanges();
}
}
public static void UpdateCourse(Course course)
{
using (var context = new Context())
{
context.Courses.Attach(course);
context.Entry(course).State = EntityState.Modified;
context.SaveChanges();
}
}
public static void DeleteCourse(int id)
{
using (var context = new Context())
{
var course = new Course() { Id == id };
context.Entry(course).State = EntityState.Deleted;
context.SaveChanges();
}
}
}
}
2 Answers
Steven Parker
231,198 PointsYou're certainly close, you just have one wrong symbol.
When you established your stub and set up the Id, you used a comparison operator ("==") instead of an assignment operator ("=").
Alexander Olson
13,067 PointsThank you sir!