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 陽陽
{
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; //定時器時間間隔
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 陽陽
{
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>
/// 應用程式的主入口點。
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
} ---------------------------- 打字小遊戲介面設計