Question

What I am trying to do is to be able to write javascript blended with razor styled markup and methods inside .cshtml file and send this to a separate method for usage later on.

My .cshtml looks something like this:

@{SomeClass.SaveForLater(@<script type="text/javascript">window.alert('@Model.SomeParamter')}</script>);

And inside the class SomeClass:

public static void SaveForLater(HtmlString str) {
    // will be using str.ToString() here and save the string output for use later on.
}

But what I receive is this error message:
CS1660: Cannot convert lambda expression to type ‘System.Web.HtmlString’ because it is not a delegate type

Am I using the wrong type for the argument or do I need to rethink the whole concept?

Solution
Thanks to SLaks below I ended up doing this:

public static void SaveForLater<T>(Func<T, HelperResult> template, dynamic model)
{
    // template(model).ToHtmlString()
}

Using it like this:

 @{SomeClass.SaveForLater<SomeModel>(
        @<script type="text/javascript">window.alert('@Model.SomeParamter')</script>,
        Model
        );

Answer 1

You’re trying to take an inline helper.
You need to accept a Func<Something, HelperResult>.