No compile errors generated for inline C# code in web page

I have a aspx web page with no code behind and a few inline C# methods (webmethods) for a mostly static page.

The following lines of code would return a compile time error were it placed in a code behind page (nothing being returned from the method)

    <script runat="server">
    [WebMethod]
    public static string SomeMethod()
    {
       string result = "hello";
    }
    </script>

Is there a compiler option to turn on the compile time check for inline C# code blocks in a web page ?

Solution

For regular asp.net:

for asp.net mvc