点名器

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<Person> list = new List<Person>();
        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<Person> List = new List<Person>();
        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!");
        }
    }
}