Winform中Timer应用+ 随机字母-键盘打字训练

Form1.CS

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace 阳阳
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            textBox1.Focus();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            textBox1.Clear();
            int b = groupBox1.Controls.Count;
          
            var radom = new Random();
            int s = radom.Next(1, b);

     

        }

        private void groupBox1_Enter(object sender, EventArgs e)
        {
           
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
         
            string inputLetter = e.KeyChar.ToString();
            RandomLetter rl = new RandomLetter();
            int a =int.Parse(label9.Text);
            if (inputLetter==label8.Text)
            {

                a = a + 1;

            }
            label9.Text = a.ToString();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
         
            textBox1.Focus();
            timer1.Stop();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
           timer1.Enabled = true;
            timer1.Interval = 1000;  //定时器时间间隔
            timer1.Start();
            int b = groupBox1.Controls.Count;
            for (int i = 0; i < b; i++)
            {
                groupBox1.Controls[i].Text = "";
            }

            RandomLetter rl = new RandomLetter();
                    
            var radom = new Random();
            int s = radom.Next(0, b);

            label8.Text = groupBox1.Controls[s].Text = rl.GetRandomLetter();
       
            textBox1.Focus();
         }

        private void label2_Click(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
               timer1.Start();
            textBox1.Focus();
        }

       
    }
}

--------------------------------

Program.cs.

 

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace 阳阳
{
    class RandomLetter
    {
      public string GetRandomLetter()
        {
            Random ran = new Random();
            int r = ran.Next(0, 25);
            string[] letterRoom = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z" };
            string randomLetter = letterRoom[r];
            return randomLetter;
        }

        public void TimerRun()
        {
          
        }

        public int sum(ref int a)
        {
            return a + 1;
        }

 

       
    }

 

 

 

 

    static class Program
    {
       

 

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

 

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