功能描述：右击表格中对应的行，进行删除或者刷新的操作。

先往DataGridView上拖一个ContextMenuStrip控件

在下面分别输入删除与刷新

双击删除，输入代码：

private void 删除ToolStripMenuItem_Click_1(object sender, EventArgs e) { try { DialogResult dr = MessageBox.Show("确定删除吗？", "提示", MessageBoxButtons.OKCancel); if (dr == DialogResult.OK) { //获取选中行的数据 Facade.FoodMenuCateFaçade façade = new Facade.FoodMenuCateFaçade(); Entity.T_FoodMenuCate t_Food = new Entity.T_FoodMenuCate(); t_Food.CateName = dataFood.CurrentRow.Cells[1].Value.ToString(); int list1 = façade.DeleteFoodMenu(t_Food); frmTips f = frmTips.GetInstance("删除完成"); f.Show(); } } catch (Exception ex) { MessageBox.Show(ex.Message); } } 双击刷新，输入代码： private void 刷新ToolStripMenuItem_Click(object sender, EventArgs e) {//通过走七层查询出数据库中新的内容： Facade.FoodMenuCateFaçade façade = new Facade.FoodMenuCateFaçade(); Entity.T_FoodMenuCate t_Food = new Entity.T_FoodMenuCate(); List<Entity.T_FoodMenuCate> list = façade.SelectFoodMenu(t_Food); //把值赋给表格 dataFood.DataSource = list; }