private void 编辑名片ToolStripMenuItem_Click(object sender, EventArgs e)
        {
         
                if (listView1.SelectedItems.Count > 0)
                {
                    Form3 ce = new Form3();
                    ce.Isedit = true;
                    ce.Id = listView1.SelectedItems[0].Tag.ToString(); //错误    1    无法将类型“string”隐式转换为“bool”  

                    ce.Show();
                }
                else
                {
                    MessageBox.Show("请选择要编辑的名片！");
                }
         
        }