运行的时候,浏览器它提示WebService未定义,WebService为定义好的web服务类.

页面前端代码为:

 <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <input id="Button1" type="button" value="button" onclick="callWebService()" />

后端代码为:

 StringBuilder sb = new StringBuilder();
            sb.Append("function callWebService(){\n");
            sb.Append("WebService.ReturnServerTime('yyyy-MM-dd mm:ss',onOk);\n");
            sb.Append("}\n");
            sb.Append("function onOk(returnData){\n");
            sb.Append("$('TextBox1').value=returnData;\n");
            sb.Append("}\n");
            this.ClientScript.RegisterClientScriptBlock(this.GetType(), "abc", sb.ToString(), true);
            this.ScriptManager1.Services.Add(new ServiceReference("WebService.asmx"));