异步刷新Browser的两种方法

1. 使用asp.net ajax

 
<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title></title>

    <script type="text/javascript">
        setInterval("test()", 5);
        function test() {

            var obj = document.getElementById('Button1');
            obj.click();
        }

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <asp:ScriptManager ID="ScriptManager1" runat="server">

    </asp:ScriptManager>

    <div>

        <asp:UpdatePanel ID="UpdatePanel1" runat="server">

            <ContentTemplate>

                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

                <div style="display:none;">

                    <asp:Button ID="Button1" runat="server" Text="Refresh"/>

                </div>

            </ContentTemplate>

        </asp:UpdatePanel>

    </div>
    
    </form>

</body>

</html>

这里主要是用到了asp.net ajax 的UpdatePanel。然后使用javascript定时自动的去点击按钮，模拟人工更新。

2. 通过webservice.htc 调用webservice来实现动态刷新

 
  
<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title></title>

    <script type="text/javascript">
        setInterval("GetNewString()", 1000);
        
        function GetNewString() {
            service.useService("WebServiceTest.asmx?WSDL", "WebServiceTest");
            service.WebServiceTest.callService("GetTestString");
        }
        function Service_Result() {
            if (event.result.error) {

                divFeatured.innerText = event.result.errorDetail.string;
            }
            else {

                divFeatured.innerText = event.result.value;
            }
        }

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <div id="service"  style="behavior:url(webservice.htc)"  onresult="Service_Result()"></div>

        <div id="divFeatured" style="width:100px; height:100px; background-color:Yellow; color:Red;"></div>

    </div>

    </form>

</body>

</html>

public class WebServiceTest : System.Web.Services.WebService
{
Random rd = new Random(DateTime.Now.Second);
[WebMethod]
public string GetTestString()
{
string[] strs = { "abc", "12", "3dfrw", "34fg", "ghjk23", "56d4fg", "df9g5", "ett2r", "34512" };
return strs[rd.Next(strs.Length-1)];
}
}

这里要去下载webservice.htc文件，并将其放在项目中。

异步刷新Browser的两种方法

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