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  • DateTime小综合

    实现效果:

    关键知识:

    1》DateTime类的ToString()方法;

    2》DateTime类的IsLeapYear();

    3》DateTime类的DaysInMomth();

    4》Datetime对象的AddDays()方法;

    实现代码:

     1         private void button1_Click(object sender, EventArgs e)
     2         {   //当前周几
     3             label1.Text="今天是:"+DateTime.Now.ToString("dddd");
     4         }
     5 
     6         private void button2_Click(object sender, EventArgs e)
     7         {   //当前年天数
     8             label2.Text =
     9                 DateTime.IsLeapYear(int.Parse(DateTime.Now.ToString("yyyy")))
    10                 == true ?"今年有:366天" : "今年有:365天";
    11         }
    12 
    13         private void button3_Click(object sender, EventArgs e)
    14         {   //当前月天数
    15             label3.Text ="当月有:"+
    16                 DateTime.DaysInMonth(DateTime.Now.Year,
    17                     DateTime.Now.Month)+"";
    18         }
    19 
    20         private void button4_Click(object sender, EventArgs e)
    21         {   //前一天日期
    22             label4.Text =
    23                 DateTime.Now.AddDays(-1).ToString("yyyy/M/dd");
    24         }

     

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  • 原文地址:https://www.cnblogs.com/feiyucha/p/9912433.html
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