《ASP.NET1200例》C#在网页上编写动态时钟

包含Timer类的命名空间有3个

Timer Class (System.Threading)‎  

Timer Class (System.Windows.Forms)‎ 一般用于窗体程序

 

Timer Class (System.Timers)‎  一般用于控制台程序

using System;

using System.Timers;
class Program
    {              
       public  static void Main()
        {
            Timer  t = new System.Timers.Timer(1000);       
            t.Interval = 2000;
           //t.AutoReset = false; //每到指定时间Elapsed事件是触发一次(false),还是一直触发(true)
            t.Enabled = true; //是否触发Elapsed事件
            t.Elapsed += new ElapsedEventHandler(t_Elapsed);

            Console.WriteLine("Press the Enter key to exit the program.");
           //从标准输入流读取下一行
            Console.ReadLine();
            // Keep the timer alive until the end of Main.
            GC.KeepAlive(t);          
        }

        static void t_Elapsed(object sender, ElapsedEventArgs e)
        {            
            Console.WriteLine("hello world!!");            
        }
    }

 

 

Timer Class (using System.Web.UI)一般用于web程序

using System.Web.UI;
protected
void Page_Load(object sender, EventArgs e) { Label1.Text = DateTime.Now.ToString(); Timer1.Interval = 1000; Timer1.Enabled = true; Timer1.Tick += new EventHandler<EventArgs>(Timer1_Tick); } void Timer1_Tick(object sender, EventArgs e) { Label1.Text = DateTime.Now.ToString(); }

此时前端代码.aspx

<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    
    <div>
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
        
            <asp:Timer ID="Timer1"
                runat="server">
            </asp:Timer>
        
    </div>
    </form>
</body>

 

 

 

《ASP.NET1200例》C#在网页上编写动态时钟,布布扣,bubuko.com

《ASP.NET1200例》C#在网页上编写动态时钟

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