Neo戰略

###########################    介 面 端    #############################

目前股價：<asp:Label ID="price1" runat="server"></asp:Label>
<asp:Button ID="Button1" runat="server" Text="Button"  onclientclick="CallServer('','');return false;" />

 

###########################  程式端  ################################### 

 

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;

public partial class 非同步處理 : System.Web.UI.Page, ICallbackEventHandler
{
    string strResult;
    protected void Page_Load(object sender, EventArgs e)
    {
        ClientScriptManager csm = Page.ClientScript;    //取得目前頁面的ClientScriptManage
        string s = csm.GetCallbackEventReference(this, "args", "ReceiveServerData", "context");
        string strcallback = "function CallServer(args,context){" + s + ";};";              //編寫javascript語法
        csm.RegisterClientScriptBlock(this.GetType(), "jsCallServer", strcallback, true);   //註冊javascript語法
        LoadScript(); //註冊javascript  function ReceiveServerData(args, context) 方法
    }

    protected void LoadScript()
    {
        //註冊javaScript方法
        //接收ServerData傳回值
        string yString =
       "function ReceiveServerData(args, context) {"+
       "document.getElementById('"+price1.ClientID+"').innerText = args; }";
        Page.ClientScript.RegisterStartupScript(this.GetType(), "jsScript", yString, true); ;
     }

    public string GetCallbackResult()
    { 
        //「傳回」以控制項為目標之回呼事件的結果
        return strResult;
    }

    public void RaiseCallbackEvent(string eventArgument)
    {
        //「處理」以控制項為目標的回呼事件。
        Random r = new Random();
        double StockPrice = r.NextDouble() * r.Next(1, 101);
        // Response.Write("xx"+StockPrice);
        strResult = StockPrice.ToString("C");     //轉成貨幣格式
    }
}