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1. 使用asp.net ajax
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<html?xmlns="http://www.w3.org/1999/xhtml"?>
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<head?runat="server">
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????<title></title>
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????<script?type="text/javascript">
- ????????setInterval("test()",?5);
- ????????function?test()?{
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????????????var?obj?=?document.getElementById('Button1');
- ????????????obj.click();
- ????????}
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????</script>
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</head>
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<body>
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????<form?id="form1"?runat="server">
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????<asp:ScriptManager?ID="ScriptManager1"?runat="server">
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????</asp:ScriptManager>
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????<div>
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????????<asp:UpdatePanel?ID="UpdatePanel1"?runat="server">
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????????????<ContentTemplate>
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????????????????<asp:TextBox?ID="TextBox1"?runat="server"></asp:TextBox>
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????????????????<div?style="display:none;">
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????????????????????<asp:Button?ID="Button1"?runat="server"?Text="Refresh"/>
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????????????????</div>
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????????????</ContentTemplate>
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????????</asp:UpdatePanel>
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????</div>
- ????
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????</form>
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</body>
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</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。
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2. 通过webservice.htc 调用webservice来实现动态刷新
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<html?xmlns="http://www.w3.org/1999/xhtml"?>
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<head?runat="server">
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????<title></title>
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????<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)?{
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????????????????divFeatured.innerText?=?event.result.errorDetail.string;
- ????????????}
- ????????????else?{
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????????????????divFeatured.innerText?=?event.result.value;
- ????????????}
- ????????}
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????</script>
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</head>
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<body>
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????<form?id="form1"?runat="server">
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????<div>
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????????<div?id="service"??style="behavior:url(webservice.htc)"??onresult="Service_Result()"></div>
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????????<div?id="divFeatured"?style="width:100px;?height:100px;?background-color:Yellow;?color:Red;"></div>
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????</div>
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????</form>
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</body>
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</html>
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public?class?WebServiceTest?:?System.Web.Services.WebService
- ????{
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????????Random?rd?=?new?Random(DateTime.Now.Second);
- ????????[WebMethod]
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????????public?string?GetTestString()
- ????????{
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????????????string[]?strs?=?{?"abc",?"12",?"3dfrw",?"34fg",?"ghjk23",?"56d4fg",?"df9g5",?"ett2r",?"34512"?};
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????????????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。
（编辑：李大同）
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