以下是不起作用的代码段:
<form id="form1" runat="server">
<div>
This is the time :
<br />
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional" ChildrenAsTriggers="false">
<ContentTemplate>
<asp:TextBox ID="txtDate" runat="server"></asp:TextBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnRefresh"/>
</Triggers>
</asp:UpdatePanel>
<br />
<asp:Button ID="btnRefresh" runat="server" text="Refresh" OnClick="btnRefresh_Click"/>
</div>
</form>
在背后的代码中:
protected void Page_Load(object sender, EventArgs e)
{
Clock c = new Clock();
string display = c.GetCurrentTime().ToLongTimeString();
this.Title = display;
this.txtDate.Text = display;
}
protected void btnRefresh_Click(object sender, EventArgs e)
{
Clock c = new Clock();
string display = c.GetCurrentTime().ToLongTimeString();
this.txtDate.Text = display;
}
为什么页面重新加载而不仅仅是UpdatePanel?
答案 0 :(得分:4)
好吧我明白了,因为每个人都成功但不是我,所以我猜这是一个配置。
实际上,你需要在web.config中有一些标签才能使用Ajax框架,我在这里遗漏了一些现在是我的web.config:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="Everywhere" />
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>
<appSettings/>
<connectionStrings/>
<system.web>
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</controls>
</pages>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
-->
<compilation debug="true">
<assemblies>
<add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></assemblies>
</compilation>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Windows"/>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</httpModules>
</system.web>
<system.web.extensions>
<scripting>
<webServices>
</webServices>
</scripting>
</system.web.extensions>
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules>
<add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated" />
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode"
type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode"
type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
</system.webServer>
</configuration>
我会给每个给我足够暗示的人+1。谢谢大家
答案 1 :(得分:1)
我删除了“ChildrenAsTriggers”并为触发器设置了“EventName”。
您可能还需要致电: UpdatePanel中的UpdatePanel1.Update(),因为您的UpdatePanel设置为'有条件'。
<form id="form1" runat="server">
<div>
This is the time :
<br />
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional">
<ContentTemplate>
<asp:TextBox ID="txtDate" runat="server"></asp:TextBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnRefresh" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
<br />
<asp:Button ID="btnRefresh" runat="server" text="Refresh" OnClick="btnRefresh_Click"/>
</div>
</form>
另外,我会确保你在页面加载中使用IsPostBack,即使在异步回发时仍然会被触发。
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
Clock c = new Clock();
string display = c.GetCurrentTime().ToLongTimeString();
this.Title = display;
this.txtDate.Text = display;
}
}
protected void btnRefresh_Click(object sender, EventArgs e)
{
Clock c = new Clock();
string display = c.GetCurrentTime().ToLongTimeString();
this.txtDate.Text = display;
}
答案 2 :(得分:1)
我重新测试了您的代码,一切都按预期工作。
当您点击刷新按钮时,它会更新更新面板中文本框中的时间,同时还会更新Windows标题栏中的时间。
“刷新”按钮不会更新“更新”面板
之外的任何控件请参阅工作代码
ASPX代码
(注意:我在更新面板之外添加了一个名为“lbltemp”的新标签)
<form id="form1" runat="server">
<div>
This is the time :
<asp:Label runat="server" id="lbltemp"></asp:Label>
<br />
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional" ChildrenAsTriggers="false">
<ContentTemplate>
<asp:TextBox ID="txtDate" runat="server"></asp:TextBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnRefresh"/>
</Triggers>
</asp:UpdatePanel>
<br />
<asp:Button ID="btnRefresh" runat="server" text="Refresh" OnClick="btnRefresh_Click"/>
</div>
代码背后
protected void Page_Load(object sender, EventArgs e)
{
string display = DateTime.Now.ToString();
this.Title = display;
this.txtDate.Text = display;
this.lbltemp.Text = display;
}
protected void btnRefresh_Click(object sender, EventArgs e)
{
string display = DateTime.Now.ToString();
this.txtDate.Text = display;
}
答案 3 :(得分:0)
尝试将ChildrenAsTriggers设置为True。