运行结果：
【代码】：
1 private void timer1_Tick(object sender, EventArgs e) 2 { 3 //获取当前年部分 4 label3.Text =Convert.ToString( DateTime.Now.Year); 5 //获取当前月部分 6 label4.Text = Convert.ToString(DateTime.Now.Month); 7 //获取当前日部分 8 label6.Text = Convert.ToString(DateTime.Now.Day); 9 //获取当前星期部分 10 string x = Convert.ToString(DateTime.Now.DayOfWeek); 11 switch (x) 12 { 13 case "Monday": 14 label9.Text = "一"; 15 break; 16 case "Tuesday": 17 label9.Text = "二"; 18 break; 19 case "Wednesday": 20 label9.Text = "三"; 21 break; 22 case "Thursday": 23 label9.Text = "四"; 24 break; 25 case "Friday": 26 label9.Text = "五"; 27 break; 28 case "Saturday": 29 label9.Text = "六"; 30 break; 31 case "Sunday": 32 label9.Text = "日"; 33 break; 34 } 35 //获取当前小时的部分，来判断是上午还是下午 36 if (DateTime.Now.Hour >= 12) 37 { 38 label12.Text = "下午"; 39 } 40 else { 41 label12.Text = "上午"; 42 } 43 44 if (sender == timer1) 45 { 46 label1.Text = gettime(); 47 } 48 } 49 50 private string gettime() 51 { 52 //创建一个接收时间的字符串变量 53 string timestring = ""; 54 //获取当前时间的时部分 55 int hour = DateTime.Now.Hour; 56 //获取当前时间的分部分 57 int min = DateTime.Now.Minute; 58 //获取当前时间的秒部分 59 int sec = DateTime.Now.Second; 60 61 timestring=((hour<10)?"0"+hour.ToString():hour.ToString()); 62 timestring += ":" + ((min < 10) ? "0" + min.ToString() : min.ToString()); 63 timestring+=":"+((sec<10)?"0"+sec.ToString():sec.ToString()); 64 65 return timestring; 66 }
【重点在】：datetime.now.***;//获取当前时间的某部分