Form1.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace 点名助手
{
    public partial class Form1 : Form
    {
       
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            colorcbb.Items .Add("Red");         
            colorcbb.Items.Add("Green");
            colorcbb.Items.Add("Yellow");
            colorcbb.Items.Add("Blue");
            colorcbb.Items.Add("Black");


        }
        static int kick;
        int select;
        string savename;
        private void startbtn_Click(object sender, EventArgs e)
        {
            if (colorcbb.Items.Count == 0) MessageBox.Show("请先添加人员！");
            else
            {
                timer1.Enabled = true;//启用计时器
                int n = listBox1.Items.Count;
                Random r = new Random();
                select = r.Next(0, n + 1);//选中的序号
                namelb.Font = new Font(this.Font.FontFamily, (Convert.ToInt32(sizetb.Text)));
                kick = Convert.ToInt32(kicktb.Text);
                savename += namelb.Text;
            }
        }

        private void addbtn_Click(object sender, EventArgs e)
        {
        //   Form2 f2 = new Form2();
        //    f2.Show();  //   或者  f2.ShowDialog(this); 一样
            listBox1.Items.Add(addtb.Text);
            addtb.Clear(); 

        }

        private void delbtn_Click(object sender, EventArgs e)
        {
            listBox1.Items.RemoveAt(listBox1.SelectedIndex);