ASP.NET做日曆

一周一周來算，註，如果本月1號是星期日，則這一月共有六周，即六行，所以乾脆每月都輸出6周就行了，然後再算第一周里的本月一號是周幾，第一周里本月又占了幾天。。。呃。。。反正很亂，想了一上午，現在寫出來了倒不知道如何解釋了。。算了。。直接上代碼。。

    //日曆界面
    public IActionResult RiLi()
    {
        List<Model.VM_OneDay>[] ss = new List<Model.VM_OneDay>[6]; 
        DateTime nowmonth01 = DateTime.Parse( DateTime.Now.ToString("yyyy-MM-01")); //本月一號
        int week01 =(int)nowmonth01.DayOfWeek; //本月一號是周幾？
        int zhanjitian = 7 - week01; //本月在第一周占了幾天，如3月1日是周三，則第一周則占了5天，用於算第2，3，4周
        for (int i = 0; i < 6; i++)
        {
            List<Model.VM_OneDay> aa = new List<Model.VM_OneDay>();
            if (i == 0)
            {
                //第一周
                for (int j = 0; j < 7; j++)
                {
                    if (j>=(int)week01)
                    {
                        int x = j - week01;
                        DateTime date = nowmonth01.AddDays(x);
                        if (x==0)
                        {
                            aa.Add(new Model.VM_OneDay() {Date=date, DateStr = date.ToString("M月d日") }); //1號
                        }
                        else
                        {
                            aa.Add(new Model.VM_OneDay() {Date = date, DateStr = date.Day.ToString() });
                        }
                      
                    }
                    else
                    {
                        DateTime date = nowmonth01.AddDays(-(week01-j));
                        aa.Add(new Model.VM_OneDay() {Date = date, DateStr = date.Day.ToString() });
                    }
                }
            }
            else
            {
                for (int j = 0; j < 7; j++)
                {
                    int x = (i - 1) * 7 + zhanjitian + j;
                    DateTime date = nowmonth01.AddDays(x);
                    if (date.Day == 1)
                    {
                        aa.Add(new Model.VM_OneDay() {Date = date, DateStr = date.ToString("M月d日") });
                    }
                    else
                    {
                        aa.Add(new Model.VM_OneDay() {Date = date, DateStr = date.Day.ToString() });
                    }
                    
                }

            }

            ss[i] = aa;
        }
        ViewBag.data = ss;
        return View();
    }

　　最後出來的界面：

日曆靜態頁：http://www.niunan.net/rili.html