private void RuleGrid_DoubleClick(object sender, EventArgs e)
        {
            CurrencyManager cm = (CurrencyManager)this.BindingContext[this.RuleGrid.DataSource];

            if (cm.Count == 0)
            {
                return;
            }

            Object obj = cm.Current;

            if (obj == null || !(obj is VcActEtyRelation))
            {
                return;
            }

            VcActEtyRelation actEtyRln = obj as VcActEtyRelation;

            if (actEtyRln.Relation == eActEtyRelation.rule)
            {
                RuleSetupFm.SetEntityRule(actEtyRln.Entity);
            }
            else if (actEtyRln.Relation == eActEtyRelation.clash)
            {
                this.OpenScheduleFm((actEtyRln.Entity as EnClsLesson).Squad);
            }
            else  //教师
            {
                this.OpenScheduleFm(actEtyRln.Entity);
            }
        }
        private void RuleGrid_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
        {
            if (e.RowIndex < 0 || e.ColumnIndex != 2)
            {
                return;
            }
            VcActEtyRelation rln
                = RuleGrid.Rows[e.RowIndex].DataBoundItem as VcActEtyRelation;

            e.CellStyle.BackColor = ViewStyle.RuleToColor(rln.Rule);
        }