一个类的属性要附值时间.datetimenow 不叫附值呢。

  private void 签到ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string name = this.dgvSe.SelectedRows[0].Cells["name1"].Value.ToString();
            if (recordTable.ContainsKey(name))
            {
                MessageBox.Show("已经签到");
            }
            else 
            {
                RecordClass recordSe = new RecordClass();
                recordSe.name = name;
                recordSe.firstTime = DateTime.Now;
                recordTable.Add(name, recordSe);
            }

        }

        private void 签退ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            DataGridViewRow dr = this.dgvSe.CurrentRow;
            if (dr == null)
            {
                return;
            }
            string name = dr.Cells["name1"].Value.ToString();
            if (recordTable.ContainsKey(name))
            {
                RecordClass rc = recordTable[name];
                rc.secondTime = DateTime.Now();====这一行显示不可调用的system.datetime.now
                MessageBox.Show("签退成功");

            }
            else
            {
                MessageBox.Show("没签到不能签退");
            }
        }
--------------------编程问答-------------------- rc.secondTime = DateTime.Now; --------------------编程问答-------------------- 多了个()
你试试 --------------------编程问答--------------------  就是这样哈哈，当时做时候.了半天，。

补充：.NET技术 ,  C#