Question

我正在尝试使用wpf制作日历。通过使用itemsPanel和更多，我有一个网格有7列（星期六 - 星期六）和6行（星期＃月）。如果我可以通过获取工作日和周数（月份）找到每月第一个的起始位置，我如何找到周数（每月0-5）？我也不能以某种方式从那里填写日历？我迷路了，我不知道还有什么可以尝试。

public partial class SchedulePage : Page
{        
    MainWindow _parentForm;
    public int dayofweek;

    public SchedulePage(MainWindow parentForm)
    {
        InitializeComponent();
        _parentForm = parentForm;
        // DateTime date = new DateTime(year, month, day);

        _parentForm.bindings = new BindingCamper();          
        _parentForm.bindings.schedule.Add(new Schedule { WeekNo = (int) getWeekNumber(), WeekDay = dayofweek });
        DataContext = _parentForm.bindings;
        // lblTest.Content = dates(2011, 10, 27);
    }

    public double getWeekNumber()
    {
        dayofweek = getWeekDay(2011, 10, 31);
        double h = dayofweek / 7;
        double g = Math.Floor(h);
        return g;
    }

    public int getWeekDay(int year, int month, int day)
    {
        //year = 2011;
        //month = 10;
        //day = 27;
        int[] t = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
        // year -= month < 3;
        return (year + year / 4 - year / 100 + year / 400 + t[month - 1] + day) % 7;
    }

Answer 1

您必须优先使用Calendar.GetDayOfWeek和Calendar.GetWeekOfYear来自己写作。

您可以保证，如果您自己编写任何日期/时间处理代码，它将包含错误，并且在不同的区域设置中不起作用。

public class Row
{
    public string MonthWeek { get; set; }
    public string Year { get; set; }
    public string Month { get; set; }
    public string Day { get; set; }
    public string WeekOfYear { get; set; }
}

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        var l = new List<Row>();
        DateTime startDate = DateTime.Now;
        DateTime d = new DateTime(startDate.Year, startDate.Month, 1);
        var cal = System.Globalization.DateTimeFormatInfo.CurrentInfo.Calendar;
        var ms = cal.GetWeekOfYear(new DateTime(d.Year, d.Month, 1), System.Globalization.CalendarWeekRule.FirstDay, System.DayOfWeek.Sunday);
        for (var i = 1; d.Month == startDate.Month; d = d.AddDays(1))
        {
            var si = new Row();
            var month_week = (d.Day / 7) + 1;
            si.MonthWeek = month_week.ToString();
            si.Month = d.Year.ToString();
            si.Year = d.Month.ToString();
            si.Day = d.Day.ToString();
            si.WeekOfYear = cal.GetWeekOfYear(d, System.Globalization.CalendarWeekRule.FirstDay, DayOfWeek.Sunday).ToString();
            l.Add(si);
        }
        dataGrid1.ItemsSource = l;
    }
}

与XAML中的强制性DataGrid一起：

    <DataGrid AutoGenerateColumns="true" Name="dataGrid1" />

Answer 2

您可以使用Globalization中的Calendar.GetWeekOfYear来执行此操作。

以下是MSDN文档：http://msdn.microsoft.com/en-us/library/system.globalization.calendar.getweekofyear.aspx

您应该将适当的文化属性从CultureInfo.CurrentCulture传递到GetWeekOfYear，以便您恰当地匹配当前文化。

示例：

int GetWeekOfYear(DateTime date)
{
    return Calendar.GetWeekOfYear(
        date,
        CultureInfo.CurrentCulture.DateTimeFormat.CalendarWeekRule,
        CultureInfo.CurrentCulture.DateTimeFormat.FirstDayOfWeek
    );
}

您可以轻松地将其修改为DateTime上的扩展方法：

static int GetWeekOfYear(this DateTime date)
{
    return Calendar.GetWeekOfYear(
        date,
        CultureInfo.CurrentCulture.DateTimeFormat.CalendarWeekRule,
        CultureInfo.CurrentCulture.DateTimeFormat.FirstDayOfWeek
    );
}

Answer 3

使用@Polynomial答案时，出现此错误：

非静态字段，方法或属性需要对象引用。

如果您之前对GregorianCalendar进行了实例化，则可以调用GetWeekOfYear方法！

private static int GetWeekNumber(DateTime time)
{
    GregorianCalendar cal = new GregorianCalendar();
    int week = cal.GetWeekOfYear(time, CalendarWeekRule.FirstFullWeek, DayOfWeek.Monday);
    return week;
}

如何确定某个日期的周数？

3 个答案: