public static string ToHtml(Controller controller, string viewToRender, object model = null, bool isPartial = false)
{
ViewEngineResult result = null;
result = GetViewResult(controller.ControllerContext, viewToRender, isPartial);
if (model == null)
{
throw new FileNotFoundException("model cannot be null.");
}
StringWriter output;
using (output = new StringWriter())
{
var viewData = controller.ViewData;
if (model != null)
{
viewData.Model = model;
}
var viewContext = new ViewContext(controller.ControllerContext, result.View, viewData, controller.TempData, output, new HtmlHelperOptions());
result.View.RenderAsync(viewContext);
}
return(output.ToString());
}
protected string RenderPartialViewToString(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = ControllerContext.ActionDescriptor.DisplayName;
}
var pngBinaryData = System.IO.File.ReadAllBytes($"{_env.WebRootPath}/images/background01.jpg");
var ImgDataURI = @"data:image/png;base64," + Convert.ToBase64String(pngBinaryData);
ViewData.Model = model;
ViewData["MainImagePath"] = ImgDataURI;
using (StringWriter sw = new StringWriter())
{
var engine = _serviceProvider.GetService(typeof(ICompositeViewEngine)) as ICompositeViewEngine; // Resolver.GetService(typeof(ICompositeViewEngine)) as ICompositeViewEngine;
ViewEngineResult viewResult = engine.FindView(ControllerContext, viewName, false);
ViewContext viewContext = new ViewContext(
ControllerContext,
viewResult.View,
ViewData,
TempData,
sw,
new HtmlHelperOptions() //Added this parameter in
);
//Everything is async now!
var t = viewResult.View.RenderAsync(viewContext);
t.Wait();
return(sw.GetStringBuilder().ToString());
}
}
