类型为"TextBox"的控件"windowMasterSearchBox"必须放置在具有runat=server的表单标记中

Question

不确定我没有将windowMasterSearchBox放置在带有runat=server的表单标签中，我哪里出了问题。我收到以下错误：类型为"文本框"的控件"windowMasterSearchBox"必须放置在带有runat=server的表单标签中。任何帮助将不胜感激。谢谢！

<div class ="field">
<a title="Search Students" id="windowMasterMagnifyingGlass"><img src="/images/icons/magnifyingBlack.png" alt="Search Students" border="0" /></a>
<asp:TextBox id="windowMasterSearchBox" runat="server" placeholder="Enter Student Name..."/>
<asp:Label id="windowMasterSearchBoxLabel" AssociatedControlId="windowMasterSearchBox" Text="Search: " runat="server"/>
</div>

Answer 1

ASP.NET 控件必须位于窗体内。

<form runat="server">
<div class ="field">
<a title="Search Students" id="windowMasterMagnifyingGlass"><img src="/images/icons/magnifyingBlack.png" alt="Search Students" border="0" /></a>
<asp:TextBox id="windowMasterSearchBox" runat="server" placeholder="Enter Student Name..."/>
<asp:Label id="windowMasterSearchBoxLabel" AssociatedControlId="windowMasterSearchBox" Text="Search: " runat="server"/>
</div>
</form>