c# - 计算两个日期之间的天数并将其显示在标签中

Question

您好，我正在 try catch 用户在 C# 日历控件中选择的两个日期，我希望日期范围显示在标签中。我已经制定了以下代码，但它产生了一个负值；不是实际的日期范围。

DateTime from = CalFrom.SelectedDate;
DateTime to = CalTo.SelectedDate;
double days = (CalTo.SelectedDate - CalFrom.SelectedDate).TotalDays;
TimeSpan t = to - from;
double noOfDays = t.TotalDays;
TimeSpan ts = to - from;
double differnceindays = ts.TotalDays;
lblNoofDays.Text = differnceindays.ToString();

Answer 1

这段代码非常适合我计算两天之间的天数。

DateTime d1 = DateTime.Now;
DateTime d2 = DateTime.Now.AddDays(10);
TimeSpan difference = d2 - d1;      
var days = difference.TotalDays;