WinForm计算所有gridview至今

Question

我想像图像一样计算日期值。

有什么简单的方法可以在 MetroGridView 中添加像标签值一样计算的页脚？
我目前正在使用标签来显示总值。
有什么建议或想法吗？

-谢谢

代码如下：

private void btnCalc_Click(object sender, EventArgs e)
    {
        // check start date
        if (dtStart.Value > dtEnd.Value)
        {
            MetroMessageBox.Show(this, "Start Date wrong!", "Error");
            return;
        }

        DateTime Now = dtEnd.Value;
        int Years = new DateTime(Now.Subtract(dtStart.Value).Ticks).Year - 1;
        DateTime PastYearDate = dtStart.Value.AddYears(Years);
        int Months = 0;

        for (int i = 1; i <= 12; i++)
        {
            if (PastYearDate.AddMonths(i) == Now)
            {
                Months = i;
                break;
            }
            else if (PastYearDate.AddMonths(i) >= Now)
            {
                Months = i - 1;
                break;
            }
        }
        int Days = Now.Subtract(PastYearDate.AddMonths(Months)).Days;

        int index = metroGrid1.Rows.Add();
        metroGrid1.Rows[index].Cells[0].Value = Years;
        metroGrid1.Rows[index].Cells[1].Value = Months;
        metroGrid1.Rows[index].Cells[2].Value = Days;

        for (int i = 0; i < metroGrid1.Rows.Count; ++i)
        {
            Years += Convert.ToInt32(metroGrid1.Rows[i].Cells[0].Value);
            Months += Convert.ToInt32(metroGrid1.Rows[i].Cells[1].Value);
            Days += Convert.ToInt32(metroGrid1.Rows[i].Cells[2].Value); 

            // stuck here ...

            lbltotal.Text = "Total: " + Years.ToString() + " years, " + Months.ToString() + " months and " + Days.ToString() + " days";
        }
    }

Answer 1

在我看来你应该这样声明：

lbltotal.Text = "Total: " + Years.ToString() + " years, " + Months.ToString() + " months and " + Days.ToString() + " days";

循环外。

而在for循环中，你用了三个Int："Years"、"Months"、"Days"来表示时间跨度的累加，但实际上是Int，不是Timespan ，所以在循环之后，它可能是：5 年 20 个月 78 天，我认为这不是你想要的那种结果。

为什么不用TimeSpan类型来代替那三个Int？

编辑：您可以使用以下代码：

// never mind the date of s1 (1990,1,1),it's not important, just as a start point for the Timespan ts1 to do accumulate;
DateTime s1 = new DateTime(1990, 1, 1);
TimeSpan ts1 = new TimeSpan();


for (int i = 0; i < metroGrid1.Rows.Count; ++i)
{
    ts1 += s1.AddDays(Convert.ToInt32(metroGrid1.Rows[i].Cells[2].Value)).AddMonths(Convert.ToInt32(metroGrid1.Rows[i].Cells[1].Value)).AddYears(Convert.ToInt32(metroGrid1.Rows[i].Cells[0].Value)) - s1;
} 


int daysResult;
int monthsResult;
int yearsResult;


// get the total number of days, then /365 to get the year count;
yearsResult = ts1.Days /365;

// get the month count by /30 from the remainder of /365;
monthsResult = (ts1.Days % 365) / 30;

// get the day count from the remainder of /30;
daysResult = (ts1.Days % 365) % 30;

lbltotal.Text = "Total: " + yearsResult.ToString() + " years, " + monthsResult.ToString() + " months and " + daysResult.ToString() + " days";

Answer 2

我测试了 Kuo-hsuan Hsu 解决方案 returns: 总计：19岁8个月零3天

我尝试了一些类似的东西（见下文）并得到：总计：19岁7个月26天 Windows 计算器告诉我：19 年7 月3 周5 天和上面的一样。不过反正我的代码长期不准确，许国轩的代码也不准确

       // taken values from grid
        int years = 18 ;
        int months = 18 ;
        int days = 57 ;
        DateTime today = DateTime.Today; // 2018-11-17
        DateTime futuredate = today.AddYears(years);
        futuredate = futuredate.AddMonths(months);
        futuredate = futuredate.AddDays(days); // 2038-07-13

        TimeSpan tsp = futuredate - today;
        years = tsp.Days / 365;
        futuredate = futuredate.AddYears(-years);
        tsp = futuredate - today;
        months = tsp.Days / 30;
        futuredate = futuredate.AddMonths(-months);
        tsp = futuredate - today;
        days = tsp.Days;
        string res1 = "Total: " + years.ToString() + " years, " + months.ToString() + " months and " + days.ToString() + " days";

我对上面的代码不满意。我正在考虑运行从开始日期到结束日期的循环并计算值。这将使我什至可以只计算工作日 - 也许有一个 public 未来 100 年假期的列表。

WinForm计算所有gridview至今

WinForm Calculate all gridview to date

c#

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winforms