public IEnumerable<Core.Entities.Group> GetGroups()
{
List<Core.Entities.Group> result =
new List<Core.Entities.Group>();
using (StudentsModel context = new StudentsModel())
{
foreach(var item in context.Groups)
{
result.Add(new Core.Entities.Group(item.Id, item.Name));
}
}
return result;
}
public void Edit(Core.Entities.Group group)
{
using (StudentsModel context = new StudentsModel())
{
var editingGroup = context
.Groups
.FirstOrDefault(x => x.Id == group.Id);
if (editingGroup == null)
throw new ArgumentException("group is not found");
editingGroup.Name = group.Name;
context.SaveChanges();
}
}
public void Delete(int id)
{
using (StudentsModel context = new StudentsModel())
{
var deletingGroup = context
.Groups
.FirstOrDefault(x => x.Id == id);
if (deletingGroup == null)
throw new ArgumentException("group is not found");
context.Groups.Remove(deletingGroup);
context.SaveChanges();
}
}
public int Add(Core.Entities.Group group)
{
var newGroup = new Group()
{
Name = group.Name
};
using (StudentsModel context = new StudentsModel())
{
context.Groups.Add(newGroup);
context.SaveChanges();
}
return newGroup.Id;
}