AjaxToolkit:页面最后一个 TabContainer 专注于页面加载 [英] AjaxToolkit: the last TabContainer on the page is focused on page load
问题描述
我在一个 ASP.NET 项目的页面上使用了多个 TabContainer，我注意到一个非常奇怪的行为:当页面加载时，焦点跳转到页面上的最后一个 TabContainer，导致它向下滚动.我没有明确关注任何控制，所以我不明白这是从哪里来的.我还在控件之间切换了位置，并且始终是最后一个焦点.TabContainers 没有任何花哨的设置，这基本上就是它们的样子:
I'm using more than one TabContainer on a page in an ASP.NET project and I noticed a really strange behavior: when the page is loaded the focus jumps to the last TabContainer on the page, causing it to scroll down. I don't explicitly focus on any control so I don't understand where this is coming from. I also switched places between the controls and it is always the last one that is focused. The TabContainers don't have any fancy settings, this is basically what they look like:
<cc1:TabContainer ID="tabContainer" runat="server">
<cc1:TabPanel runat="server" HeaderText="Header1" ID="tabPanel1" TabIndex="0">
<HeaderTemplate>
<asp:Label ID="lblTab1" runat="server" Text="Tab1"></asp:Label>
</HeaderTemplate>
<ContentTemplate>
... (anything goes here, it still doesn't work)
</ContentTemplate>
</cc1:TabPanel>
<cc1:TabPanel runat="server" HeaderText="Header2" ID="tabPanel2" TabIndex="1">
<HeaderTemplate>
<asp:Label ID="lblTab2" EnableViewState="False" runat="server" Text="Tab2"></asp:Label>
</HeaderTemplate>
<ContentTemplate>
... (anything goes here, it still doesn't work)
</ContentTemplate>
</cc1:TabPanel>
</cc1:TabContainer>
我知道我可以在控件上设置焦点，我试过了，但页面首先滚动到选项卡容器，然后返回到焦点控件(它看起来不太好).我尝试将焦点设置为另一个控件:
I know I can set focus on a control, I tried it but the page first scrolls to the tab container and then returns to the focused control (it doesn't look good). I tried this to set the focus to another control:
<body id="main" onload="javascript:document.getElementById('lnkLogout').focus();">
这是 TabContainer 的标准行为吗?我怎样才能摆脱它?
Is this the standard behavior for the TabContainer? How can I get rid of it?
推荐答案
将脚本放在 ScriptManager 控件的正下方:
Place script below right after ScriptManager control:
<script type="text/javascript">
Sys.Extended.UI.TabContainer.prototype._app_onload = function (sender, e) {
if (this._cachedActiveTabIndex != -1) {
this.set_activeTabIndex(this._cachedActiveTabIndex);
this._cachedActiveTabIndex = -1;
var activeTab = this.get_tabs()[this._activeTabIndex];
if (activeTab) {
activeTab._wasLoaded = true;
//activeTab._setFocus(activeTab); -- disable focus on active tab in the last TabContainer
}
}
this._loaded = true;
}
</script>
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