ASP.NET服务器标签格式不正确

Question

I have the following code, I'm trying to disable the radio button when the condition is true. However when I add in the <%# Eval("category_id").ToString().Equals("5") ? "disabled" : "" %> <%# Eval("category_id").ToString().Equals("5") ? "disabled" : "" %> statement I'm getting the The server tag is not well formed error.

I'm not sure what is wrong with my code. If I removed the Code snippet outside of the radio button tag the word disabled displays as text on the screen, but as soon as I move it in the radio button tag I get the error.

   <asp:RadioButton  
        ID="Status_C" 
        runat="server" 
        Text="C" 
        GroupName="Status" 
        Style="color: green;" 
        <%# Eval("category_id").ToString().Equals("5") ? "disabled" : "" %> 
    />

Answer 1

<asp:RadioButton  
        ID="Status_C" 
        runat="server" 
        Text="C" 
        GroupName="Status" 
        Style="color: green;" 
        Enabled='<%# !(Eval("category_id").ToString().Equals("5")) %>'
    />