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这篇文章主要为大家展示了“如何使用编程语言实现随机点名程序”,内容简而易懂,条理清晰,希望能够帮助大家解决疑惑,下面让小编带领大家一起研究并学习一下“如何使用编程语言实现随机点名程序”这篇文章吧。
using System; using System.Collections.Generic; using System.IO; using System.Windows.Forms; using System.Drawing; namespace Randoms { public partial class Main : Form { FileStream fs = null; StreamReader sr = null; //StreamWriter sw = null; List<string> names = new List<string>(); Random rd = new Random(); int jg = 0; //string syspath = System.Environment.CommandLine;//当前程序路径 string syspath = System.Windows.Forms.Application.StartupPath; public Main() { InitializeComponent(); //GetData();//获取数据 } private void GetData() { string Namesaddress = syspath + "\\Names.txt"; try { fs = new FileStream(Namesaddress, FileMode.Open); sr = new StreamReader(fs); //string count=sr.ReadLine(); //while (count!=null) //{ // name.Add(count.ToString()); //} while (true) { string s = sr.ReadLine(); if (s != null) names.Add(s); else break; } } catch (Exception) { throw; } finally { sr.Close(); fs.Close(); } } /// <summary> /// 开始点名 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button1_Click(object sender, EventArgs e) { this.button2.Enabled = true; lab.ForeColor = Color.Black; if (names.Count == 0) { this.time.Enabled = false; lab.Text = "Please Reload At First"; } else { this.time.Enabled = true; } } /// <summary> /// 计数器 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void time_Tick(object sender, EventArgs e) { int rf = names.Count; jg = rd.Next(0, rf); lab.Text = names[jg]; } /// <summary> /// 停止 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button2_Click(object sender, EventArgs e) { if (names.Count == 0) { this.time.Enabled = false; lab.Text = "The End"; //GetData(); } else { lab.ForeColor = Color.Blue; this.time.Enabled = false; names.RemoveAt(jg); } } /// <summary> /// 加载所有人 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Main_Load(object sender, EventArgs e) { string Namesaddress = syspath + "\\Names.txt"; if (System.IO.File.Exists(Namesaddress) ) { GetData(); } else { MessageBox.Show("查看Names.txt文件是否存在"); Application.Exit(); } } /// <summary> /// 从新加载 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button3_Click(object sender, EventArgs e) { lab.ForeColor = Color.Black; this.time.Enabled = false; lab.Text = "Load Complete"; GetData(); this.button2.Enabled = false; } } }
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