private void _F_DeleteStudent(StudentInfoViewModel s)
{
if (s == null)
{
return;
}
_StudentInfoDal.Remove(s.StudentInfo);
var target = (from item in Relation where item.StudentId == s.ID select item).ToList();
if (target != null || target.Count > 0)
{
foreach (var ritem in target)
{
_RelationShipDal.Remove(ritem);
}
_StudentInfoDal.Save();
StudentList.Remove(s);
}
}
private void _F_UpdateStudent(StudentInfoViewModel s)
{
var sInstance = ServiceLocator.Current.GetInstance <StudentModifyViewModel>();
sInstance.studentInfo = s.StudentInfo;
sInstance.Title = "修改学生信息";
sInstance.classInfo = (from citem in _EFDataContext.classes
from item in _EFDataContext.relations
where item.StudentId == s.ID && item.ClassId == citem.ID
select citem).ToList()?.FirstOrDefault();
StudentInfoWindow studentInfoWindow = new StudentInfoWindow();
studentInfoWindow.ShowDialog();
if (studentInfoWindow.DialogResult == true)
{
_StudentInfoDal.Update(s.StudentInfo);
var target = (from item in Relation where item.StudentId == s.ID select item).ToList();
if (target != null && target.Count > 0)
{
target[0].ClassId = sInstance.classInfo.ID;
_RelationShipDal.Update(target[0]);
}
else
{
_RelationShipDal.Insert(new Student_Class_Relation()
{
StudentId = s.ID, ClassId = sInstance.classInfo.ID
});
}
_StudentInfoDal.Save();
_RelationShipDal.Save();
s.Update();
//RefreshData();
//RaisePropertyChanged("Students");
}
}