C#输出日历

      用C#输出日历，此功能可用于Ajax方式列出计划日程相关的内容，由于是C#控制输出，可以方便加上自己需要的业务处理逻辑。

1.控制台输出：

using System;

namespace 控制台日历
{
    class Program
    {
        public static void Main(string[] args)
        {

            string s = "    ";
            Console.WriteLine("输入年份：");
            int nYear = int.Parse(Console.ReadLine());
            Console.WriteLine("输入月份：");
            int nMonth = int.Parse(Console.ReadLine());
            DateTime day1 = new DateTime(nYear,nMonth,1);
            Console.WriteLine("{0}/{1}",day1.Year,day1.Month);
            Console.WriteLine("日  一  二  三  四  五  六");

            int week1 =(int )day1.DayOfWeek;//获取当年当月1号的星期
            //Console.WriteLine("当月一号的星期{0}",week1);
            int lastday = day1.AddMonths(1).AddDays(-1).Day; //获取当月的最后一天
            for (int i = 0; i < week1; i++)
                Console.Write(s);//不能换行输出
            for (int i = 1; i <= lastday; i++)
            {
                Console.Write("{0:00}  ", i);//按01 02   输出
                if ((i + week1) % 7 == 0)
                    Console.WriteLine();
            }
            Console.WriteLine();
            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }
}

效果图：

2.Html表格输出：

#region 生成表格日历
      /// <summary>
      /// 生成表格日历 index：月份偏量，用来查看上一月下一月
      /// </summary>
      /// <param name="index"></param>
      /// <returns></returns>
      public static string GetCalendarHtml(int index = 0)
      {
          DateTime day1 = new DateTime(DateTime.Now.AddMonths(index).Year, DateTime.Now.AddMonths(index).Month, 1);
          int week1 = (int)day1.DayOfWeek;//获取当年当月1号的星期
          int lastday = day1.AddMonths(1).AddDays(-1).Day; //获取当月的最后一天

          System.Text.StringBuilder builder = new System.Text.StringBuilder();
          builder.Append(string.Format("<table class='calendar_table'><caption><span  style='cursor:pointer' class='prevMonth' onclick='javascript:changeMonth(-1)'>上一月</span><span class='currMonth'> {0}年{1}月</span><span style='cursor:pointer' class='nextMonth' onclick='javascript:changeMonth(1)'>下一月</span></caption>", DateTime.Now.AddMonths(index).Year, DateTime.Now.AddMonths(index).Month));
          builder.Append("<tr class='calendar_head'>");
          builder.Append("<td class='calendar_cell'>日</td>");
          builder.Append("<td class='calendar_cell'>一</td>");
          builder.Append("<td class='calendar_cell'>二</td>");
          builder.Append("<td class='calendar_cell'>三</td>");
          builder.Append("<td class='calendar_cell'>四</td>");
          builder.Append("<td class='calendar_cell'>五</td>");
          builder.Append("<td class='calendar_cell'>六</td>");
          builder.Append("</tr>");
          string emptyString = "<td class='calendar_cell'> </td>";
          if (week1 > 0)
          {
              builder.Append("<tr class='calendar_body'>");
              for (int i = 0; i < week1; i++)
              {
                  builder.Append(emptyString);
              }
          }
          for (int i = 1; i <= lastday; i++)
          {
              string day = string.Format("{0:00}  ", i);//按01 02   输出
              builder.Append(string.Format("<td class='calendar_cell'>{0}</td>", day));
              if ((i + week1) % 7 == 0)
              {
                  builder.Append("</tr><tr class='calendar_body'>");
              }
          }
          builder.Append("</tr>");
          builder.Append("</table>");
          return builder.ToString();
      }

      #endregion

页面前台结合javascript实现ajax日历切换效果，只需用js改变函数中的index偏移量即可。