Question

我正在创建一个具有硬编码数字的简单猜谜游戏。当用户在文本框中输入一个数字并单击该按钮时，如果该数字太低，则背景将变为蓝色并说“太低”。如果数字太高，背景将变为红色并说“太高”。最后，如果猜对了，那么背景会变成绿色并说“那是正确的！”

我觉得答案就在我面前，但我似乎无法弄清楚是否正确。我很确定我必须在第43和46行进行某种转换吗？

代码：

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 A12_02
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Hardcoded number.
            int SecNum = 75;

            //Users input.
            int Guess = Convert.ToInt32(textBox1.Text);

            //Users input was too low.
            if (Convert.ToInt32(Guess) < SecNum)
                this.BackColor = Color.Blue;

            if (Convert.ToInt32(Guess) < SecNum)
                OutputText.Text = "Too low.";

            //Users input was too high.
            if (Convert.ToInt32(Guess) > SecNum)
                this.BackColor = Color.Red;

            if (Convert.ToInt32(Guess) > SecNum)
                OutputText.Text = "Too high.";

            //Users input was correct.
            if (Guess = SecNum)
                this.BackColor = Color.Green;

            if (Guess = SecNum)
                OutputText.Text = "That's correct!";

        }
    }
}

Answer 1

if (Guess == SecNum)
         this.BackColor = Color.Green;

我猜你错误地分配了价值，它应该像上面一样。

Answer 2

问题是单个=是一项任务。在比较相等性时，您需要使用==。此外，您无需重复检查相同的条件。您的代码可以缩写为somehwat：

private void button1_Click(object sender, EventArgs e) {
    //Hardcoded number.
    int SecNum = 75;

    //Users input.
    int Guess = Convert.ToInt32(textBox1.Text);

    if (Guess < SecNum) {
        this.BackColor = Color.Blue;
        OutputText.Text = "Too low.";
    } else if (Guess > SecNum) {
        this.BackColor = Color.Red;
        OutputText.Text = "Too high.";
    } else {
        this.BackColor = Color.Green;
        OutputText.Text = "That's correct!";
    }
}

无法将int转换为bool c＃表单

2 个答案: