MVC6中的@ Html.Raw等效项

Question

I have several controls that are copy-pasted. I want to avoid it, so I moved all HTML generating logic in static helper class. But when I use it my HTML is escaped in quotes, but I want to display it in raw HTML. Here is two problems:

1. I cannot extend controller itself, I should do it from a view only.
2. I cannot use tag helpers, becuase one of parameters is of delegate type, so it cannot be passed to tag helper class (as far as I know).

My current usecase was:

<div class="panel-body panel-body-table">
    @(WuiHelper<int>.RenderIntegerInput(Model.Config, x => x.PatchSize, "sourceObserver_patchSize", "Patch Size", 1, 1000000))
</div>

But as I said, it escapes an html in quotes so it renders as plain text (return type of method is string ). It seems that @Html helper class was removed. My current web.config is:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.webServer>
    <handlers>
      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified"/>
    </handlers>
    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false"/>
  </system.webServer>
</configuration>

Here is a screenshot: all namespaces are referenced, but @Html is missing:

Answer 1

Solved by using IHtmlContent instead of string as return value of a method, and wrapping a string in HtmlEncodedString . Entire signature worked:

public static IHtmlContent RenderIntegerInput<T>(CustomizableConfig<T> model, Func<T, TParam> func, string id, string name, int minValue, int maxValue)
{
   //...
   string oldStringResult = ... // generating HTML
   return new HtmlEncodedString(oldStringResult);
}