public static string ExcuteToStringAsync(this ViewExecutor viewExecutor,
ActionContext actionContext,
IView view,
ViewDataDictionary viewData,
ITempDataDictionary tempData,
string contentType,
int?statusCode)
{
if (actionContext == null)
{
throw new ArgumentNullException(nameof(actionContext));
}
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
var services = actionContext.HttpContext.RequestServices;
var viewOption = services.GetRequiredService <IOptions <MvcViewOptions> >();
if (viewData == null)
{
var metadataProvider = services.GetRequiredService <IModelMetadataProvider>();
viewData = new ViewDataDictionary(metadataProvider, actionContext.ModelState);
}
if (tempData == null)
{
tempData = services.GetRequiredService <ITempDataDictionary>();
}
var response = actionContext.HttpContext.Response;
string resolvedContentType = null;
Encoding resolvedContentTypeEncoding = null;
ResolveContentTypeAndEncoding(
contentType,
response.ContentType,
DefaultContentType,
out resolvedContentType,
out resolvedContentTypeEncoding);
response.ContentType = resolvedContentType;
if (statusCode != null)
{
response.StatusCode = statusCode.Value;
}
using (var writer = new StringWriter())
{
var viewContext = new ViewContext(
actionContext,
view,
viewData,
tempData,
writer,
viewOption.Value.HtmlHelperOptions);
//viewExecutor.DiagnosticSource.BeforeView(view, viewContext);
view.RenderAsync(viewContext);
//DiagnosticSource.AfterView(view, viewContext);
// Perf: Invoke FlushAsync to ensure any buffered content is asynchronously written to the underlying
// response asynchronously. In the absence of this line, the buffer gets synchronously written to the
// response as part of the Dispose which has a perf impact.
writer.FlushAsync();
return(writer.GetStringBuilder().ToString());
}
}
public static IHtmlContent ExecuteToHTML(this ViewExecutor viewExecutor,
ActionContext actionContext,
IView view,
object Model,
ViewDataDictionary viewData,
ITempDataDictionary tempData,
string contentType,
int?statusCode)
{
if (actionContext == null)
{
throw new ArgumentNullException(nameof(actionContext));
}
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
var services = actionContext.HttpContext.RequestServices;
var viewOption = services.GetRequiredService <IOptions <MvcViewOptions> >();
var executor = services.GetRequiredService <ViewResultExecutor>();
var htmlHelper = services.GetRequiredService <IHtmlHelper>();
if (viewData == null)
{
var metadataProvider = services.GetRequiredService <IModelMetadataProvider>();
viewData = new ViewDataDictionary(metadataProvider, actionContext.ModelState);
}
if (tempData == null)
{
tempData = services.GetRequiredService <ITempDataDictionary>();
}
var response = actionContext.HttpContext.Response;
string resolvedContentType = null;
Encoding resolvedContentTypeEncoding = null;
ResolveContentTypeAndEncoding(
contentType,
response.ContentType,
DefaultContentType,
out resolvedContentType,
out resolvedContentTypeEncoding);
response.ContentType = resolvedContentType;
if (statusCode != null)
{
response.StatusCode = statusCode.Value;
}
using (var writer = new StringWriter())
{
//var viewContext = new ViewContext(
// actionContext,
// view,
// viewData,
// tempData,
// writer,
// viewOption.Value.HtmlHelperOptions);
var routeData = new RouteData();
//routeData.Values.Add("area", actionContext.RouteData.Values["area"]); //area information has been removed intentionally, because this route date spoils the view context of the parent (Page Controller)
routeData.Values.Add("controller", actionContext.RouteData.Values["controller"]);
routeData.Values.Add("action", actionContext.RouteData.Values["action"]);
routeData.Values.Add("pageModuleId", actionContext.RouteData.Values["pageModuleId"]);
foreach (var rt in actionContext.RouteData.Routers)
{
routeData.Routers.Add(rt);
}
var ac = new ActionContext(actionContext.HttpContext, routeData, actionContext.ActionDescriptor);
var viewContext = new ViewContext(
ac,
view,
viewData,
tempData,
writer,
viewOption.Value.HtmlHelperOptions);
((HtmlHelper)htmlHelper).Contextualize(viewContext);
var result = htmlHelper.Partial(view.Path, Model, viewData);
writer.FlushAsync();
return(result);
}
}
