Make a string using a view by calling specific action and controller in a user method

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C#

ASP.NET

MVC

Hello,

I want to make a method which received action and controller name as a string and execute that action of the controller and get the result as a string e.g like RenderAction helper method do in Razor.

What I am trying to do.

public static string RenderViewAsString(string ActionName, string ControllerName, object model)
{
//calling the action and returning the result.
}

The method that I am currently using:

protected string RenderPartialViewToString(string viewName, object model)
        {
            if (string.IsNullOrEmpty(viewName))
                viewName = ControllerContext.RouteData.GetRequiredString("action");

            ViewData.Model = model;

            using (StringWriter sw = new StringWriter())
            {
                ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext, viewName);
                ViewContext viewContext = new ViewContext(ControllerContext, viewResult.View, ViewData, TempData, sw);
                viewResult.View.Render(viewContext, sw);

                return sw.GetStringBuilder().ToString();
            }
        }

This method is just taking viewname and object model, but it will also required the ControllerContext. As I am using it in BLL so every time i run it, it give me

ControllerContext = null

I want to make a method that just take action name and controller name with model for the view and return me the string for the email body, without using each time the same method in every controller.

If I used current method in my controller then it will work properly as ControllerContext is set and the view is in the controller directory. But, what if i want to use a view multiple time from multiple controller and also to send email method from multiple controller.

What I have tried:

I have searching on the internet not find anything specific related to my question. But just the method that I am using currently.