https://forums.asp.net/t/1205746.aspx?content+is+not+supported+outside+script+or+asp+content+regionjava
asp.net web application有master pageweb
新增的page若是须要增长内容,须要使用asp:contentapp
<asp:content id="Content1" contentplaceholderid="ContentPlaceHolder1" runat="Server"> <script type="text/javascript"> alert("Hello, World!"); </script> </asp:content>
在master page上有对应的,两边的id须要匹配上ide
<asp:ContentPlaceHolder ID="cphMain" runat="server">
</asp:ContentPlaceHolder>ui
输入ContentPlaceHolderID以后,会自动提示master page上有哪几个place holder能够用spa