在 MVC3Razor 中，如何获取操作中呈现的视图的 html？

I use a static method in a class I called Utilities.Common I pass views back to the client as properties of JSON objects constantly so I had a need to render them to a string. Here ya go:

public static string RenderPartialViewToString(Controller controller, string viewName, object model)
{
controller.ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(controller.ControllerContext, viewName);
ViewContext viewContext = new ViewContext(controller.ControllerContext, viewResult.View, controller.ViewData, controller.TempData, sw);
viewResult.View.Render(viewContext, sw);


return sw.ToString();
}
}

This will work for full views as well as partial views, just change ViewEngines.Engines.FindPartialView to ViewEngines.Engines.FindView.

The accepted answer by @Chev above is good, but I wanted to render the result of a specific action, not just a particular view.

Also, I needed to be able to pass parameters to that action rather than rely on injecting a model.

So I came up with my own method, that I put in the base class of my controllers (making it available to them all):

    protected string RenderViewResultAsString(ViewResult viewResult)
{
using (var stringWriter = new StringWriter())
{
this.RenderViewResult(viewResult, stringWriter);


return stringWriter.ToString();
}
}


protected void RenderViewResult(ViewResult viewResult, TextWriter textWriter)
{
var viewEngineResult = this.ViewEngineCollection.FindView(
this.ControllerContext,
viewResult.ViewName,
viewResult.MasterName);
var view = viewEngineResult.View;


try
{
var viewContext = new ViewContext(
this.ControllerContext,
view,
this.ViewData,
this.TempData,
textWriter);


view.Render(viewContext, textWriter);
}
finally
{
viewEngineResult.ViewEngine.ReleaseView(this.ControllerContext, view);
}
}

Suppose I have an action called Foo that takes a model object and some other parameters, which together influence what view will be used:

    public ViewResult Foo(MyModel model, int bar)
{
if (bar == 1)
return this.View("Bar1");
else
return this.View("Bar2", model);
}

Now, if I want to get the result of calling action Foo, I can simply get the ViewResult by invoking the Foo method, and then call RenderViewResultAsString to get the HTML text:

    var viewResult = this.Foo(model, bar);


var html = this.RenderViewResultAsString(viewResult);