public async Task <string> RenderToStringAsync <T>(string viewName, object model)
{
try
{
var httpContext = _httpContextAccessor.HttpContext; //new DefaultHttpContext { RequestServices = _serviceProvider };
var routeData = httpContext.GetRouteData();
var cad = new ControllerActionDescriptor();
var ac = new ActionContext(httpContext, httpContext.GetRouteData(), cad);
var actionContext = new ControllerContext(ac);
_nccLanguageDetector = new NccLanguageDetector(_httpContextAccessor);
var language = _nccLanguageDetector.GetCurrentLanguage();
_nccTranslator = new NccTranslator(language);
if (httpContext.Items.ContainsKey("NCC_RAZOR_PAGE_PROPERTY_CURRENT_LANGUAGE"))
{
httpContext.Items["NCC_RAZOR_PAGE_PROPERTY_CURRENT_LANGUAGE"] = language;
}
else
{
httpContext.Items.Add("NCC_RAZOR_PAGE_PROPERTY_CURRENT_LANGUAGE", language);
}
if (httpContext.Items.ContainsKey("NCC_RAZOR_PAGE_PROPERTY_TRANSLATOR"))
{
httpContext.Items["NCC_RAZOR_PAGE_PROPERTY_TRANSLATOR"] = _nccTranslator;
}
else
{
httpContext.Items.Add("NCC_RAZOR_PAGE_PROPERTY_TRANSLATOR", _nccTranslator);
}
if (httpContext.Items.ContainsKey("NCC_RAZOR_PAGE_PROPERTY_LOGGER"))
{
httpContext.Items["NCC_RAZOR_PAGE_PROPERTY_LOGGER"] = _logger;
}
else
{
httpContext.Items.Add("NCC_RAZOR_PAGE_PROPERTY_LOGGER", _logger);
}
var typeInfo = typeof(T).GetTypeInfo();
//actionContext.ActionDescriptor.ActionName = "Index";
//actionContext.ActionDescriptor.ControllerName = "Home";
actionContext.ActionDescriptor.DisplayName = typeInfo.Module.Name;
actionContext.ActionDescriptor.ControllerTypeInfo = typeInfo;
using (var sw = new StringWriter())
{
var viewResult = _razorViewEngine.FindView(actionContext, viewName, false);
if (viewResult.View == null)
{
throw new ArgumentNullException($"{viewName} does not match any available view");
}
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = model
};
var viewContext = new ViewContext(
actionContext,
viewResult.View,
viewDictionary,
new TempDataDictionary(actionContext.HttpContext, _tempDataProvider),
sw,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(sw.ToString());
}
}
catch (Exception ex)
{
_logger.LogError(ex.Message, ex);
}
return(string.Empty);
}
public string RenderToString(Type controllerType, string viewName, object model)
{
var errorMessage = "";
try
{
var httpContext = _httpContextAccessor.HttpContext; //new DefaultHttpContext { RequestServices = _serviceProvider };
var routeData = httpContext.GetRouteData();
var cad = new ControllerActionDescriptor();
var ac = new ActionContext(httpContext, httpContext.GetRouteData(), cad);
var actionContext = new ControllerContext(ac);
_nccLanguageDetector = new NccLanguageDetector(_httpContextAccessor);
var language = _nccLanguageDetector.GetCurrentLanguage();
_nccTranslator = new NccTranslator(language);
if (httpContext.Items.ContainsKey("NCC_RAZOR_PAGE_PROPERTY_CURRENT_LANGUAGE"))
{
httpContext.Items["NCC_RAZOR_PAGE_PROPERTY_CURRENT_LANGUAGE"] = language;
}
else
{
httpContext.Items.Add("NCC_RAZOR_PAGE_PROPERTY_CURRENT_LANGUAGE", language);
}
if (httpContext.Items.ContainsKey("NCC_RAZOR_PAGE_PROPERTY_TRANSLATOR"))
{
httpContext.Items["NCC_RAZOR_PAGE_PROPERTY_TRANSLATOR"] = _nccTranslator;
}
else
{
httpContext.Items.Add("NCC_RAZOR_PAGE_PROPERTY_TRANSLATOR", _nccTranslator);
}
if (httpContext.Items.ContainsKey("NCC_RAZOR_PAGE_PROPERTY_LOGGER"))
{
httpContext.Items["NCC_RAZOR_PAGE_PROPERTY_LOGGER"] = _logger;
}
else
{
httpContext.Items.Add("NCC_RAZOR_PAGE_PROPERTY_LOGGER", _logger);
}
var typeInfo = controllerType.GetTypeInfo();
var actionName = typeInfo.DeclaredMethods?.FirstOrDefault()?.Name ?? "Index";
actionContext.ActionDescriptor.ActionName = actionName;
actionContext.ActionDescriptor.ControllerName = typeInfo.Name;
actionContext.ActionDescriptor.DisplayName = actionName;
actionContext.ActionDescriptor.ControllerTypeInfo = typeInfo;
using (var sw = new StringWriter())
{
var viewResult = _razorViewEngine.FindView(actionContext, viewName, false);
if (viewResult.View == null)
{
throw new ArgumentNullException($"{viewName} does not match any available view");
}
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = model
};
var viewContext = new ViewContext(
actionContext,
viewResult.View,
viewDictionary,
new TempDataDictionary(actionContext.HttpContext, _tempDataProvider),
sw,
new HtmlHelperOptions()
);
viewResult.View.RenderAsync(viewContext).Wait();
var viewContent = sw.ToString();
//For showing which view file finally used for rendering.
viewContent += $"<!-- View: {viewResult.View.Path}-->";
return(viewContent);
}
}
catch (Exception ex)
{
_logger.LogError(ex.Message, ex);
if (GlobalContext.HostingEnvironment.EnvironmentName.Contains("Development"))
{
errorMessage = $"<p style='color:red;'> {ex.Message}</p>";;
}
else
{
errorMessage = $"<p style='color:red;'> Error in widget {viewName}</p>";;
}
}
return(errorMessage);
}
