1.搭建窗体

点名器实现页面效果图

需要实现功能块

统计添加后的姓名

添加页面

删除页面

修改页面

首先创建一个Person类    用到了List<T> 集合初始化

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Runtime.Serialization.Formatters.Binary;using System.Text;using System.Threading.Tasks;namespace 点名器{    [Serializable]    public class Person    {        public List
     
       list = new List
      
       ();        public string name { get; set; }        public string imageindex { get; set; }        public void Save()        {            FileStream fs = new FileStream("save.bin",FileMode .OpenOrCreate);//导命名空间using System.IO;            BinaryFormatter bf = new BinaryFormatter();           //导命名空间using System.Runtime.Serialization.Formatters.Binary;            bf.Serialize(fs, list);            fs.Close();        }        public void Return()        {            //首先定义一个数组            FileStream fs = new FileStream("save.bin",FileMode.Open);            BinaryFormatter bf = new BinaryFormatter();            list = (List< Person>) bf.Deserialize(fs);        }    }}
      
     

在主窗体中调用各页面,和Timer事件   在退出的时候保存用到了序列化和反序列化

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace 点名器{    public partial class FrmMain : Form    {        public FrmMain()        {            InitializeComponent();        }        List
     
       List = new List
      
       ();        Person Main = new Person();        private void FrmMain_Load(object sender, EventArgs e)        {            //主窗体页面            Main.Return();            List = Main.list;        }        private void btnEntry_Click(object sender, EventArgs e)        {            //登录按钮            this.timer.Enabled = true;        }        private void btnCease_Click(object sender, EventArgs e)        {            //停止按钮            this.timer.Enabled = false;        }        int i = 0;        private void timer_Tick(object sender, EventArgs e)        {            //时间控件            if (i < List.Count)            {                txtFortunate.Text = List[i].name;                //把图片放在bin目录下  新建文件夹下中                this.pictureBox1.Image = Image.FromFile("新建文件夹\\"+i+".jpg");//图片                i++;            }            else            {                i = 0;            }        }        private void 查询ToolStripMenuItem_Click(object sender, EventArgs e)        {            //查询            FrmInquiry frm = new FrmInquiry();            frm.Inquiry.list = List;            frm.Show();        }               private void 增加ToolStripMenuItem_Click(object sender, EventArgs e)        {            //增加            FrmAdd frm = new FrmAdd();            frm.adds.list = List;            frm.Show();        }        private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)        {            //删除            FrmAdd frm = new FrmAdd();            frm.adds.list = List;            frm.num = 1;            frm.btnAdd.Text = "删除";            frm.Text = "删除";            frm.lblName.Text = "请输入要删除的人";            frm.Show();        }        private void 修改ToolStripMenuItem_Click(object sender, EventArgs e)        {            //修改            FrmRevise frm = new FrmRevise();            frm.Revise.list = List;            frm.Show();        }               private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)        {            DialogResult result = MessageBox.Show("是否保存?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);            if (result == DialogResult.OK)            {                Main.Save();                MessageBox.Show("保存成功!");            }        }    }}
      
     

统计人数   用到了forearm遍历输出

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace 点名器{    public partial class FrmInquiry : Form    {        public FrmInquiry()        {            InitializeComponent();        }        public Person Inquiry = new Person();        private void FrmInquiry_Load(object sender, EventArgs e)        {            foreach (Person item in Inquiry.list)            {                listBox.Items.Add(item.name);            }        }    }}

 

1添加和删除用到了同一个页面(窗体的复用),实现了各自的功能块

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace 点名器{    public partial class FrmAdd : Form    {        public FrmAdd()        {            InitializeComponent();        }        public Person adds = new Person();        public int num = 0;        Person ps = new Person();        private void btnAdd_Click(object sender, EventArgs e)        {            if(string.IsNullOrEmpty(txtName.Text))            {                MessageBox.Show("不能为空!");                return;                        }            if (num == 0)            {               ps.name = this.txtName.Text;                foreach (Person item in adds.list)                {                    if (item.name == ps.name)                    {                        MessageBox.Show("已经存在!");                        return;                    }                }                adds.list.Add(ps);                MessageBox.Show("增加成功!");                txtName.Text = "";            }            else            {                ps.name = this.txtName.Text;                foreach (Person  item in adds.list )                {                    if (item.name == ps.name)                    {                        adds.list.Remove(item);                        MessageBox.Show("删除成功!");                                              return;                    }                                  }                MessageBox.Show("删除失败!");            }            txtName.Text = "";            txtName.Focus();                 }    }}

1.修改中,判断了listBox控件中是否存在该人,存在就修改,否则输出没有该人,请确定后重新修改

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace 点名器{    public partial class FrmRevise : Form    {        public FrmRevise()        {            InitializeComponent();        }        public Person Revise = new Person();        private void btnRevise_Click(object sender, EventArgs e)        {            Person ps = new Person();            ps.name = this.txtFront.Text;            foreach (Person  item in Revise.list)            {                if (item.name == this.txtFront.Text)                {                    DialogResult result = MessageBox.Show("是否修改?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);                    if (result == DialogResult.OK)                    {                        item.name = txtBehind.Text;                        MessageBox.Show("修改成功!");                        return;                    }                    else                    {                        MessageBox.Show("修改失败!");                        txtFront.Focus();                        return;                    }                }            }            MessageBox.Show("没有此人!");        }    }}