按月獲取一年組中所有星期的列表

Question

我正在使用Webform應用程序，因此需要列出一年中的所有星期，並滿足以下條件：

• 一周從星期一開始，到星期日結束。

• 按月分組

• 直到今天為止（以降序排列（從上到下））（應該顯示星期幾，包括今天的日期）

• 列出的每個星期間隔都是指向新頁面的鏈接detail.aspx （我需要捕獲開始日期和結束日期並將其傳遞給鏈接，以便可以使用查詢字符串為新頁面檢索它）

例如，這是我要存檔的輸出 ：這是從2015年初（從2015年1月5日星期一開始）到2015年7月29日今天的樣子。我只寫了Jun和July的詳細信息，其余部分應該是一樣的。

2015年7月

Monday (July, 27) - Sunday (August, 2) <= (each of these is a link)
Monday (July, 20) - Sunday (July, 26)
Monday (July, 13) - Sunday (July, 19)  
Monday (July, 6) - Sunday (July, 12)

2015年6月

Monday (June, 29) - Sunday (July, 5)
Monday (June, 22) - Sunday (June, 28)
Monday (June, 15) - Sunday (June, 21) 
Monday (June, 8) - Sunday (June, 14)
Monday (June, 1) - Sunday (June, 7)    

五月至一月應該是相同的...

這就是我現在所擁有的：

DateTime counter = new DateTime(2015, 1, 5); // first week of 2015 start on Monday Jan 5 2015
        while (counter <= DateTime.Now)
        {
            DateTime startDate = counter;
            DateTime endDate = startDate.AddDays(6);
            Response.Write("<a href=\"/details.aspx?start=" + startDate.ToShortDateString() + "&end=" + endDate.ToShortDateString() + "\" target=\"_blank\">" + startDate.ToLongDateString() + " - " + endDate.ToLongDateString() + "<br>");
            counter = endDate.AddDays(1);
        }

它輸出：

我該如何修復循環以使其反向，因此較新的日期在最前面，並且還按月對列表進行分組/分隔

Answer 1

您反轉循環：

int delta = DayOfWeek.Monday - DateTime.Now.DayOfWeek; // finds the difference between today and the monday of this week
DateTime counter = DateTime.Now.AddDays(delta); // sets the counter the first day of this week.

int currentMonth = DateTime.Now.Month; // current month as integer.

while (counter >= new DateTime(2015, 1, 5))
{
    if (currentMonth != counter.Month)
    {
        response.Write("my dividing text");// put your html here
        currentMonth = counter.Month;
    }

    DateTime startDate = counter;
    DateTime endDate = startDate.AddDays(6);

    Response.Write("<a href=\"/details.aspx?start=" 
        + startDate.ToShortDateString() + "&end=" + endDate.ToShortDateString() 
        + "\" target=\"_blank\">" + startDate.ToLongDateString() + " - " 
        + endDate.ToLongDateString() + "<br>");

    counter = startDate.AddDays(-7);
 }

Answer 2

在這里，您有自己的代碼，我只添加了一些變量，我認為它更具可讀性

DateTime counter = new DateTime(2015, 1, 5); // first week of 2015 start on Monday Jan 5 2015
int currentMonth = counter.Month;
List<string> rows = new List<string>();
while (counter <= DateTime.Now)
{
    DateTime startDate = counter;
    DateTime endDate = startDate.AddDays(6);
    if (!startDate.Month.Equals(currentMonth))
    {   //When the month change it writes the name of the new month
        rows.Add("<br>" + startDate.AddMonths(-1).ToString("MMMM"));
        currentMonth++;
    }
    //I delete your '<br>' at the end to use it in the Join(), also you were missing the closing tag '</a>'
    rows.Add("<a href='/details.aspx?start=" + startDate.ToShortDateString() + "&end=" + endDate.ToShortDateString() + "' target='_blank'>" + startDate.ToLongDateString() + " - " + endDate.ToLongDateString() + "</a>");
    counter = endDate.AddDays(1);
}
rows.Reverse(); //Reverse the order of the array
Response.Write(string.Join("<br>", rows.ToArray())); // Join the array in one line to just call one time the ResponseWrite