public static SchoolDBContext GetInstance()
{
if (_schoolDBContext == null)
{
_schoolDBContext = new SchoolDBContext();
}
return(_schoolDBContext);
}
public MarkRepository(SchoolDBContext db)
{
this.db = db;
}
public StudentRepository(SchoolDBContext db)
{
this.db = db;
}
public SubjectRepository(SchoolDBContext db)
{
this.db = db;
}