以字符串形式獲取MVCpartialView / View數據

Question

我有一個要求，我需要將View中的HTML數據保存在字符串變量中，類似這樣

string data = GetData(Id)

GetData是一種返回View的方法，例如

public ActionResult GetData(int Id) { return PartialView("ViewName"); }

我的要求是獲取此View創建/返回的任何內容，並將其作為HTML分配給string變量data

真的有可能嗎？

感謝幫助

Answer 1

嘗試這個

 public static string GetTemplateContentInstance(ControllerContext controllerContext, string viewName, object model)
    {
        if (string.IsNullOrWhiteSpace(viewName))
            //Return name of view for current action
            viewName = controllerContext.RouteData.GetRequiredString("action");

        controllerContext.Controller.ViewData.Model = model;
        using (StringWriter stringWriter = new StringWriter())
        {
            ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(controllerContext, viewName);
            ViewContext viewContext = new ViewContext(controllerContext, viewResult.View, controllerContext.Controller.ViewData, controllerContext.Controller.TempData, stringWriter);
            viewResult.View.Render(viewContext, stringWriter);

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

用途如下

 string viewBody = GetTemplateContentInstance(this.ControllerContext, Url.Content("ViewName"), ModelName)

Answer 2

嘗試這個：

private string GetHtmlFromUrl(string url)
{
    string html = "";
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    // get the response stream.
    //Stream responseStream = response.GetResponseStream();
    // use a stream reader that understands UTF8
    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
    html = reader.ReadToEnd();
    // close the reader
    reader.Close();
    response.Close();
    return html;//return content html
}

用法：

string data = GetHtmlFromURL("/YourController/GetData/{ID}") 
//or GetHtmlFromURL("/YourController/GetData?ID={ID}") if your route isn't set to accept ID

Answer 3

您嘗試創建一個HtmlHelper的實例，並在該幫助器中使用RenderPartial擴展方法。

注意：您需要包括對System.Web.Mvc.Html的使用，以訪問RenderPartial

public static HtmlHelper GetHtmlHelper( this Controller controller )
        {
            var viewContext = new ViewContext( controller.ControllerContext, new FakeView(), controller.ViewData, controller.TempData, TextWriter.Null );
            new HtmlHelper( viewContext, new ViewPage() ).RenderPartial("/mypartial");
        }

        public class FakeView : IView
        {
            public void Render( ViewContext viewContext, TextWriter writer )
            {
                throw new InvalidOperationException();
            }
        }