Я использую MonoDevelop на MacOS, и у меня возникают трудности с отображением TabContainer AjaxControlToolkit в Google Chrome. Я даже установил для свойства visible значение true для TabContainer и TabPanels, но оно все равно не работало. Вот исходный HTML:
<ajaxToolkit:ToolkitScriptManager id="tsm1" runat="server" />
<div style="position:absolute;top:0px;left:0px;">
<img src="" />
</div>
<div style="position:absolute;top:200px;left:20px;">
<ajaxToolkit:TabContainer id="NewTabContainer" runat="server" Height="300px" Visible="true" >
<ajaxToolkit:TabPanel id="FirstPanel" runat="server" HeaderText="Tab 1" Visible="true" >
<ContentTemplate>
PAGE ONE - This is the first Panel.
</ContentTemplate>
</ajaxToolkit:TabPanel>
<ajaxToolkit:TabPanel id="SecondPanel" runat="server" HeaderText="Tab 2" Visible="true" >
<ContentTemplate>
PAGE TWO - This is the second Panel.
</ContentTemplate>
</ajaxToolkit:TabPanel>
</ajaxToolkit:TabContainer>
Это HTML Chrome генерирует:
<div id="NewTabContainer" class="ajax__tab_xp" style="visibility:hidden;">
<div id="NewTabContainer_header">
<span id="NewTabContainer_FirstPanel_tab"><span class="ajax__tab_outer"><span class="ajax__tab_inner"><span class="ajax__tab_tab" id="__tab_NewTabContainer_FirstPanel">Tab 1</span></span></span></span><span id="NewTabContainer_SecondPanel_tab"><span class="ajax__tab_outer"><span class="ajax__tab_inner"><span class="ajax__tab_tab" id="__tab_NewTabContainer_SecondPanel">Tab 2</span></span></span></span>
</div><div id="NewTabContainer_body" style="height:300px;">
<div id="NewTabContainer_FirstPanel" class="ajax__tab_panel">
PAGE ONE - This is the first Panel.
</div><div id="NewTabContainer_SecondPanel" class="ajax__tab_panel" style="display:none;visibility:hidden;">
PAGE TWO - This is the second Panel.
</div>
</div>
</div>