1.首先是添加员工信息：

public int type;        //保存父窗体的引用        public FrmMain FrmParent { get; set; }        //        public FrmAdd()        {            InitializeComponent();            this.cboSex.SelectedIndex = 0;     }

2.写在保存按钮里去： try            {                //创建SE的对象                SE se = new SE();                se.ID = this.txtid.Text.Trim();                se.Age = Int32.Parse(this.txtAge.Text.Trim());                se.Name = this.txtName.Text.Trim();//姓名                if (this.cboSex.SelectedItem.ToString() == "男")                {                    se.Gender = Gender.男.ToString();                }                else                {                    se.Gender = Gender.女.ToString();                }                //循环打印                foreach (SE item in FrmParent.AddList)                {                    if (item.ID == se.ID)                    {                        MessageBox.Show("此工号已经存在！");                        return;                    }                }                //添加泛型集合里                FrmParent.AddList.Add(se);                this.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }            finally            {                //刷新列表                this.FrmParent.BindGrid(FrmParent.AddList);            } 理解： 主窗口

public partial class FrmMain : Form    {        public FrmMain()        {            InitializeComponent();        }        public Dictionary
      
        dic = new Dictionary
       
        ();        //泛型集合        public List
        
          AddList = new List
         
          ();        //刷新DataGridView数据        public void BindGrid(List
          
            list)        {            this.divList.DataSource = new BindingList
           
            (list); } //主窗口 private void FrmMain_Load(object sender, EventArgs e) { } //新增 private void toolStripButton1_Click(object sender, EventArgs e) { FrmAdd fm = new FrmAdd(); fm.type = 1; fm.FrmParent = this; fm.ShowDialog(); } //查看 private void btnLook_Click(object sender, EventArgs e) { List
            
              tempList = new List
             
              ();//用于临时列表保存查询到的信息 foreach (SE item in this.AddList) { //如果泛型集合的SE下标不等于-1 if (item.ID.IndexOf(this.txtId.Text.Trim()) !=-1) { tempList.Add(item); } } this.divList.DataSource = new BindingList
              
               (tempList); } //删除 private void toolStripButton3_Click(object sender, EventArgs e) { DialogResult = MessageBox.Show("是否确定删除？","提示",MessageBoxButtons.YesNo,MessageBoxIcon.Question); if (DialogResult ==DialogResult.Yes) { //通过索引访问 List
               
                 tempList = new List
                
                 (); foreach (SE item in this.AddList) { tempList.Remove(item); } this.divList.DataSource = new BindingList
                 
                  (tempList); } } //修改 private void toolStripButton2_Click(object sender, EventArgs e) { } private void 签到ToolStripMenuItem_Click(object sender, EventArgs e) { //判断是否选中一行 if (this.divList.SelectedRows.Count != 1) { MessageBox.Show("请选中一行！"); return; } string workNo = divList.CurrentRow.Cells[0].Value.ToString(); //遍历Key值 foreach (string item in dic.Keys) { if (workNo == item) { MessageBox.Show("您已经签到过！"); return; } } Record record = new Record(); record.ID = workNo;//id号 record.Name = divList.CurrentRow.Cells[1].Value.ToString();//获取选中的姓名 record.SignInTime = DateTime.Now;//当前的时间 this.dic.Add(record.ID,record);//添加到记录里 MessageBox.Show("签到成功！"); } private void 签退ToolStripMenuItem_Click(object sender, EventArgs e) { if (this.divList.SelectedRows.Count !=1) { MessageBox.Show("请选择一行！"); return; } string ID = divList.CurrentRow.Cells[0].Value.ToString(); bool isOut = false;//标识是否已经签到过 foreach (string item in dic.Keys) { if (item == ID) { this.dic[item].SignOutTime = DateTime.Now; MessageBox.Show("签退成功！"); isOut = true; break; } } if (!isOut) { MessageBox.Show("很抱歉，尚未签到！"); } } private void toolStripButton4_Click(object sender, EventArgs e) { Frmclock fm = new Frmclock(); fm.FrmParent = this; fm.ShowDialog(); } }
                 
                
               
              
             
            
           
          
         
        
       
      

public Frmclock()        {            InitializeComponent();        }        //保存父级        public FrmMain FrmParent { get; set; }            public void show()        {            BindingSource bs = new BindingSource();            bs.DataSource = FrmParent.dic.Values;            this.dataGridView1.DataSource = bs;        }        private void Frmclock_Load(object sender, EventArgs e)        {            show();        }