private void CreateSubject(int order, int motherId)
{
BaseHandler bh = new BaseHandler();
Subject newSubject = new Subject();
newSubject.label = txtAddSubject.Text;
newSubject.SubjectOrder = order;
newSubject.MotherId = motherId;
bh.CreateSubject(newSubject, this.UserId);
txtAddSubject.Text = "";
BindTree();
}
