C# 打卡/打卡小时 - 总工作时间

Question

问题：创建一个由打卡按钮、打卡按钮和标签组成的程序来保存总工作时间。

这段代码看起来应该很简单，但我知道我遗漏了一些东西。我无法从 inButton 单击获取 DateTime clockIn 以在 outButton 单击中与 TimeSpan 一起使用。我是 C# 的新手，所以欢迎任何批评。谢谢！

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

        public void inButton_Click(object sender, EventArgs e)
        {
           DateTime clockIn = DateTime.Now;
        }

        public void outButton_Click(object sender, EventArgs e)
        {
            DateTime clockOut = DateTime.Now;
            TimeSpan timeWorked = clockOut - clockIn;

            string timeWorkedReport = $"Time worked = {timeWorked.Hours} hours, {timeWorked.Minutes} minutes";

            timeLabel.Text = timeWorkedReport;
        }
    }
}

Answer 1

最重要的是，您需要阅读有关变量范围和数据成员的内容。

不太重要 - 以下将起作用：

我刚刚将您的变量提升为 Class 数据成员。

public partial class Form1 : Form
    {
        DateTime clockIn = DateTime.Min;  // Move Here

        public Form1()
        {
            InitializeComponent();
        }

        public void inButton_Click(object sender, EventArgs e)
        {
           clockIn = DateTime.Now;
        }

        public void outButton_Click(object sender, EventArgs e)
        {
            DateTime clockOut = DateTime.Now;
            TimeSpan timeWorked = clockOut - clockIn;

            string timeWorkedReport = $"Time worked = {timeWorked.Hours} hours, {timeWorked.Minutes} minutes";

            timeLabel.Text = timeWorkedReport;
        }
    }

C# 打卡/打卡小时 - 总工作时间

C# Clock In / Clock Hour - Total Time Worked

c#

datetime

timespan

buttonclick