Question

我有一个DateTimePicker：DateTimePicker1 和TextBox：Textbox3

当我从DateTimePicker1中选择日期以查看日期的数字周时，我该怎么办？

Answer 1

ADD

Imports System
Imports System.Globalization
Imports System.Threading

和

TextBox4.Text = CultureInfo.InvariantCulture.Calendar.GetWeekOfYear(DateTimePicker1.Text, CalendarWeekRule.FirstFourDayWeek, DayOfWeek.Monday)