public partial class Form1 : Form{public Form1(){InitializeComponent();}　　　　//FROM 1 中的内容//公共列表<SE>工程师=新列表<SE>()；public  List<SE> engineers = new List<SE>();//公共<string,Record>列表显示<string,Record>()；public Dictionary<string, Record> recordList = new Dictionary<string, Record>();public void initial(){//初始化信息SE wang = new SE();wang.Name = "王小毛";wang.Age = 19;wang.ID = "20090101";wang.gender = Gender.男;SE joke = new SE();joke.Name = "周新宇";joke.Age = 19;joke.ID = "20090102";joke.gender = Gender.女;//添加元素
            engineers.Add(wang);engineers.Add(joke);}//泛型添加//公共void BindGrid(<SE>列出)public void BindGrid(List<SE> list){//dataGridView1。 数据源=新BindingList<SE>(列表)；//添加显示数据  dataGridView1.DataSource = new BindingList<SE>(list);}private void Form1_Load(object sender, EventArgs e){//引用方法
            initial();BindGrid(engineers);  }private void button1_Click(object sender, EventArgs e){    //<SE>工程师=新列表List<SE>()；List<SE> engineer = new List<SE>();//foreach(SE项目工程师)foreach(SE item in engineers){   //判断数据是否存在if(item.ID.IndexOf(textBox1.Text.Trim())!=-1){engineer.Add(item);//导入数据
                }}BindGrid(engineer);//泛型添加
        }private void toolStripButton1_Click(object sender, EventArgs e){Form2 frm = new Form2();frm.frmparent = this;frm.ShowDialog();//模式化窗体 显示
        }private void toolStripButton3_Click(object sender, EventArgs e){       //提示 是否删除DialogResult i = MessageBox.Show("是否删除", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);if (i == DialogResult.Yes){//字符串id=dataGridView1. 隐藏所选择[0]  ToString()；string id = dataGridView1.SelectedRows[0].Cells[3].Value.ToString();foreach (SE item in engineers){if (item.ID==id){engineers.Remove(item);// 删除break;}}BindGrid(engineers);}}//签到操作private void 签到ToolStripMenuItem_Click(object sender, EventArgs e){//
            string workNo = dataGridView1.SelectedRows[0].Cells[3].Value.ToString();//验证 确保有选中的行foreach (string id in recordList.Keys){if (id == workNo){MessageBox.Show("今天已经签到过了");return;}}//执行签到Record record = new Record();record.ID = workNo;record.Name = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();record.SignInTime = DateTime.Now; //获取系统的当前时间recordList.Add(record.ID, record);//添加到签到记录中MessageBox.Show("签到成功");}//签退操作private void 签退ToolStripMenuItem_Click(object sender, EventArgs e){string ID = dataGridView1.SelectedRows[0].Cells[3].Value.ToString();bool isOut = false; //标识是否已经签到过foreach(string key in recordList.Keys){if(key==ID){//执行签到，设置签退的时间this.recordList[key].SignOutTime = DateTime.Now;MessageBox.Show("签退成功");isOut = true;break;}}if(isOut==false) //不成立
            {MessageBox.Show("尚未签到");}}private void toolStripButton4_Click(object sender, EventArgs e){Form3 frm = new Form3();frm.name = "共有" + recordList .Count+ "条打卡记录"; //窗体传值frm.frmparent = this;frm.ShowDialog();}

　　//Form 2中的内容

  public partial class Form2 : Form{public Form2(){InitializeComponent();}//定义Form1 公用的属性public Form1 frmparent{ get; set; }private void button1_Click(object sender, EventArgs e){   //初始化信息SE pr = new SE();//窗体传值pr.ID = textBox1.Text;pr.Name = textBox3.Text;pr.Age = Convert.ToInt32(textBox2.Text);//判断男女if (comboBox1.SelectedValue.ToString() == "男"){pr.gender = Gender.男;}else{pr.gender = Gender.女;}foreach (SE item in frmparent.engineers){if (item.ID == pr.ID){MessageBox.Show("此工号已存在");return;}}//绑定数据源
            frmparent.engineers.Add(pr);this.Close();this.frmparent.BindGrid(frmparent.engineers);}private void Form2_Load(object sender, EventArgs e){Com();//调用Com方法
        }private void Com(){//初始化ComboBoxItem<Gender> itemmale = new ComboBoxItem<Gender>();itemmale.ItemText = Gender.男.ToString();itemmale.ItemValue = Gender.男;ComboBoxItem<Gender> itemfemale = new ComboBoxItem<Gender>();itemfemale.ItemText = Gender.女.ToString();itemfemale.ItemValue = Gender.女;//声明集合  List<ComboBoxItem<Gender>> item = new List<ComboBoxItem<Gender>>();//添加集合中的数据
            item.Add(itemmale);item.Add(itemfemale);//绑定信息comboBox1.DataSource = item;comboBox1.DisplayMember = "ItemText";comboBox1.ValueMember = "ItemValue";}

　　//Form 3中的内容

  public partial class Form3 : Form{public Form3(){InitializeComponent();}//定义Form3的公共属性public  string name = "";//定义Form1 公用的属性public Form1 frmparent { get; set; } private void Form3_Load(object sender, EventArgs e){label1.Text = name;//绑定数据NewMethod();//调用方法
        }private void NewMethod(){   //创建数据源的组件// 用BindingSource可以提高程序的性能和安全性BindingSource bs = new BindingSource();//把集合元素添加到数据原中bs.DataSource = frmparent.recordList.Values;//this  本对象//展示数据源中的数据this.dataGridView1.DataSource = bs;}private void button1_Click(object sender, EventArgs e){//消息框.显示(frmparent。列表显示。 计数。 ToString())；//消息框展示集合中元素的数量
            MessageBox.Show(frmparent.recordList.Count.ToString());}

　　　　　　//ComboBoxItem类

    class ComboBoxItem<T>{   public string ItemText { get; set; }public T ItemValue { get; set; }}
}

　　　　//Gender类

 //公开枚举性别public enum Gender{男,女}

//Record类

 public class Record{//保存父窗体的使用//签到的时间public DateTime SignInTime { get; set; } //签退的时间public DateTime SignOutTime { get; set; }//工号public string ID { get; set; }//员工姓名public string Name { get; set; }}
}

//SE　　类

   public class SE{//公共名称的字符串public string  Name { get; set; }public int  Age { get; set; }public Gender gender { get; set; }public string  ID { get; set; }}