public void SaveSubGroup(SubGroup group)
{
if (group.SubGroupId != -1)
{
SubGroup.Add(group);
}
else
{
var temp = SubGroup.FirstOrDefault(s => s.SubGroupId == group.SubGroupId);
if (temp != null)
{
temp = group;
}
else
{
SubGroup.Add(group);
}
}
SaveChanges();
}