protected async Task <string> RenderViewToString(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = ControllerContext.ActionDescriptor.ActionName;
}
ViewData.Model = model;
using (var writer = new System.IO.StringWriter())
{
ViewEngineResult viewResult =
_viewEngine.FindView(ControllerContext, viewName, true);
ViewContext viewContext = new ViewContext(
ControllerContext,
viewResult.View,
ViewData,
TempData,
writer,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(writer.GetStringBuilder().ToString());
}
}
public ActionResult Index(int?id = null)
{
var availableLanguages = _localizationService.GetAllLanguages();
if (id.HasValue)
{
var umbracoContext = _umbracoContextAccessor.GetRequiredUmbracoContext();
var content = umbracoContext.Content?.GetById(true, id.Value);
if (content is null)
{
return(NotFound());
}
availableLanguages = availableLanguages.Where(language => content.Cultures.ContainsKey(language.IsoCode));
}
var model = new BackOfficePreviewModel(_features, availableLanguages);
if (model.PreviewExtendedHeaderView.IsNullOrWhiteSpace() == false)
{
var viewEngineResult = _viewEngines.FindView(ControllerContext, model.PreviewExtendedHeaderView !, false);
if (viewEngineResult.View == null)
{
throw new InvalidOperationException("Could not find the view " + model.PreviewExtendedHeaderView + ", the following locations were searched: " + Environment.NewLine + string.Join(Environment.NewLine, viewEngineResult.SearchedLocations));
}
}
var viewPath = Path.Combine(
_globalSettings.UmbracoPath,
Constants.Web.Mvc.BackOfficeArea,
ControllerExtensions.GetControllerName <PreviewController>() + ".cshtml")
.Replace("\\", "/"); // convert to forward slashes since it's a virtual path
return(View(viewPath, model));
}
protected async Task <string> RenderAsync(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = ControllerContext.RouteData.Values["action"].ToString();
}
ViewEngineResult viewResult = _compositeViewEngine.FindView(ControllerContext, viewName, false);
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = model
};
using (var sw = new StringWriter())
{
var newViewContext = new ViewContext(
ControllerContext,
viewResult.View,
viewDictionary,
TempData,
sw,
new HtmlHelperOptions());
await viewResult.View.RenderAsync(newViewContext);
return(sw.ToString());
}
}
private string RenderPartialViewToString(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = ControllerContext.ActionDescriptor.ActionName;
}
ViewData.Model = model;
using (var writer = new StringWriter())
{
ViewEngineResult viewResult =
_viewEngine.FindView(ControllerContext, viewName, false);
ViewContext viewContext = new ViewContext(
ControllerContext,
viewResult.View,
ViewData,
TempData,
writer,
new HtmlHelperOptions()
);
var t = viewResult.View.RenderAsync(viewContext);
t.Wait();
return(writer.GetStringBuilder().ToString());
}
}
public async Task <string> RenderPartialViewToString(Controller controller, string viewName, object model = null)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = controller.ControllerContext.ActionDescriptor.ActionName;
}
controller.ViewData.Model = model;
using (var writer = new StringWriter())
{
ViewEngineResult viewResult = viewEngine.FindView(controller.ControllerContext, viewName, false);
ViewContext viewContext = new ViewContext(
controller.ControllerContext,
viewResult.View,
controller.ViewData,
controller.TempData,
writer,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(writer.GetStringBuilder().ToString());
}
}
private async Task <string> RenderView(Controller controller, string viewName)
{
//Adapted from Red at https://stackoverflow.com/questions/40912375/return-view-as-string-in-net-core
using (var writer = new StringWriter())
{
ViewEngineResult viewResult = viewEngine.FindView(controller.ControllerContext, viewName, true);
if (viewResult.Success == false)
{
return($"A view with the name {viewName} could not be found");
}
ViewContext viewContext = new ViewContext(
controller.ControllerContext,
viewResult.View,
controller.ViewData,
controller.TempData,
writer,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(writer.GetStringBuilder().ToString());
}
}
public async Task RenderViewAsync <TModel>(string name, TModel model, StringWriter output)
{
var actionContext = GetActionContext();
var viewEngineResult = _viewEngine.FindView(actionContext, name, false);
if (!viewEngineResult.Success)
{
throw new InvalidOperationException(string.Format("Couldn't find view '{0}'", name));
}
var view = viewEngineResult.View;
var viewContext = new ViewContext(
actionContext,
view,
new ViewDataDictionary <TModel>(
new EmptyModelMetadataProvider(),
new ModelStateDictionary())
{
Model = model
},
new TempDataDictionary(
actionContext.HttpContext,
_tempDataProvider),
output,
new HtmlHelperOptions());
await view.RenderAsync(viewContext);
}
public async Task <string> RenderToStringAsync(string viewName, object model)
{
var httpContext = new DefaultHttpContext {
RequestServices = _serviceProvider
};
var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor());
using var sw = new StringWriter();
var viewResult = _compositeViewEngine.FindView(actionContext, viewName, false);
if (viewResult.View == null)
{
throw new ArgumentNullException($"{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());
}
public string RenderPartialView(ActionContext context, string name, object model)
{
var viewEngineResult = _viewEngine.FindView(context, name, false);
if (!viewEngineResult.Success)
{
throw new InvalidOperationException(string.Format("Couldn't find view '{0}'", name));
}
var view = viewEngineResult.View;
using (var output = new StringWriter())
{
var viewContext = new ViewContext(
context,
view,
new ViewDataDictionary(
new EmptyModelMetadataProvider(),
new ModelStateDictionary())
{
Model = model
},
new TempDataDictionary(
context.HttpContext,
_tempDataProvider),
output,
new HtmlHelperOptions());
view.RenderAsync(viewContext).GetAwaiter().GetResult();
return(output.ToString());
}
}
public async Task <IActionResult> Create([FromBody] Voucher voucher)
{
using var stringWriter = new StringWriter();
voucher.Logo = Logo.GetLogo();
voucher.BarCode = "data:image/png;base64," + Convert.ToBase64String(QrCodeCreator.CreateQrCode(voucher.TicketNo));
voucher.ValidPassengerIcon = IconToDisplay(voucher.TotalPersons, voucher.Passengers.Count);
voucher.Facebook = Facebook.GetLogo();
voucher.YouTube = YouTube.GetLogo();
voucher.Instagram = Instagram.GetLogo();
var viewResult = compositeViewEngine.FindView(ControllerContext, "Voucher", false);
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = voucher
};
var viewContext = new ViewContext(ControllerContext, viewResult.View, viewDictionary, TempData, stringWriter, new HtmlHelperOptions());
var htmlToPdf = new HtmlToPdf(1000, 1414);
await viewResult.View.RenderAsync(viewContext);
var pdf = htmlToPdf.ConvertHtmlString(stringWriter.ToString());
var pdfBytes = pdf.Save();
if (!Directory.Exists("Vouchers"))
{
Directory.CreateDirectory("Vouchers");
}
using (var streamWriter = new StreamWriter("Vouchers\\Voucher" + voucher.TicketNo + ".pdf")) {
await streamWriter.BaseStream.WriteAsync(pdfBytes.AsMemory(0, pdfBytes.Length));
}
return(StatusCode(200, new {
response = ApiMessages.FileCreated()
}));
}
/// <summary>Renders a (partial view) List to string.</summary>
/// <param name="viewName">(Partial view) List to render</param>
/// <param name="model">(Partial view) model to render</param>
/// <returns>Rendered (partial view) List as string</returns>
protected string RenderPartialViewToString(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = ControllerContext.ActionDescriptor.DisplayName;
}
ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
ViewEngineResult viewResult = _viewEngine.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());
}
}
private async Task <string> RenderPartialViewToString(string viewName)
{
if (string.IsNullOrEmpty(viewName))
{
viewName = ControllerContext.ActionDescriptor.ActionName;
}
using (var writer = new StringWriter())
{
ViewEngineResult viewResult =
_viewEngine.FindView(ControllerContext, viewName, true);
ViewContext viewContext = new ViewContext(
ControllerContext,
viewResult.View,
ViewData,
TempData,
writer,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(writer.GetStringBuilder().ToString());
}
}
public async Task <string> RenderViewToStringAsync(ControllerContext controllerContext, string viewName, object model, Microsoft.AspNetCore.Mvc.ViewFeatures.ITempDataDictionary tempData, Dictionary <string, string> viewBagItems = null)
{
var view = _viewEngine.FindView(controllerContext, viewName, true).View;
var writer = new StringWriter();
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = model
};
var viewContext = new ViewContext(
controllerContext, view, viewDictionary,
tempData, writer, new HtmlHelperOptions()
);
if (viewBagItems != null)
{
foreach (var item in viewBagItems)
{
viewContext.ViewData.Add(item.Key, item.Value);
}
}
await view.RenderAsync(viewContext);
return(writer.ToString());
}
public async Task <bool> RenderAsync(string name, object model, IOwinEnvironment context, CancellationToken cancellationToken)
{
var httpContext = context.Request[MicrosoftHttpContextKey] as HttpContext;
if (httpContext == null)
{
_logger.Error($"Request dictionary does not contain '{MicrosoftHttpContextKey}'", nameof(RazorViewRenderer));
return(false);
}
// TODO ideally this would be done by the existing middleware pipeline
// if authentication and view rendering were split up
GetUserIdentity(httpContext, _logger);
var actionContext = GetActionContext(httpContext);
ViewEngineResult viewEngineResult;
if (IsApplicationRelativePath(name))
{
var basePath = Directory.GetCurrentDirectory();
_logger.Trace($"Getting view '{name}' relative to '{basePath}'");
viewEngineResult = _viewEngine.GetView(basePath, name, true);
}
else
{
viewEngineResult = _viewEngine.FindView(actionContext, name, true);
}
if (!viewEngineResult.Success)
{
_logger.Trace($"Could not find Razor view '{name}'", nameof(RazorViewRenderer));
return(false);
}
var view = viewEngineResult.View;
using (var writer = new StreamWriter(context.Response.Body))
{
var viewDataDictionary = new ViewDataDictionary(
new EmptyModelMetadataProvider(),
new ModelStateDictionary())
{
Model = model
};
var viewContext = new ViewContext(
actionContext,
view,
viewDataDictionary,
new TempDataDictionary(actionContext.HttpContext, _tempDataProvider),
writer,
new HtmlHelperOptions());
cancellationToken.ThrowIfCancellationRequested();
await view.RenderAsync(viewContext);
return(true);
}
}
public async Task <string> RenderViewAsString <TModel>(string viewName, TModel model)
{
var viewData = new ViewDataDictionary <TModel>(
metadataProvider: new EmptyModelMetadataProvider(),
modelState: new ModelStateDictionary())
{
Model = model
};
var actionContext = actionAccessor.ActionContext;
var tempData = new TempDataDictionary(actionContext.HttpContext, tempDataProvider);
using (StringWriter output = new StringWriter())
{
ViewEngineResult viewResult = viewEngine.FindView(actionContext, viewName, true);
ViewContext viewContext = new ViewContext(
actionContext,
viewResult.View,
viewData,
tempData,
output,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(output.GetStringBuilder().ToString());
}
}
public async static Task <string> RenderPartialView(ViewContext context, string viewName, ICompositeViewEngine viewEngine = null, ViewEngineResult viewResult = null)
{
viewEngine ??= context.HttpContext.RequestServices.GetRequiredService <ICompositeViewEngine>();
viewResult ??= viewEngine.FindView(context, viewName, false);
await viewResult.View.RenderAsync(context);
return(context.Writer.ToString());
}
public IActionResult Index(int statusCode, [FromServices] ICompositeViewEngine compositeViewEngine)
{
var reExecute = this.HttpContext.Features.Get <IStatusCodeReExecuteFeature>();
if (compositeViewEngine.FindView(this.ControllerContext, "Index", false).Success)
{
return(this.View(statusCode));
}
return(this.StatusCode(statusCode));
}
//Put in BaseController
public string RenderPartialViewToString(ICompositeViewEngine viewEngine, string viewName, object model)
{
viewName = viewName ?? ControllerContext.ActionDescriptor.ActionName;
ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
IView view = viewEngine.FindView(ControllerContext, viewName, false).View;
ViewContext viewContext = new ViewContext(ControllerContext, view, ViewData, TempData, sw, new HtmlHelperOptions());
view.RenderAsync(viewContext).Wait();
return(sw.GetStringBuilder().ToString());
}
}
/// <summary>
/// Ensures that a physical view file exists on disk.
/// </summary>
/// <param name="template">The view name.</param>
protected bool EnsurePhsyicalViewExists(string template)
{
ViewEngineResult result = _compositeViewEngine.FindView(ControllerContext, template, false);
if (result.View != null)
{
return(true);
}
_logger.LogWarning("No physical template file was found for template {Template}", template);
return(false);
}
internal static async Task <string> RenderView <DataModel>(this Controller controller, ICompositeViewEngine viewEngine, string viewName, DataModel model)
{
var view = viewEngine.FindView(controller.ControllerContext, viewName, false).View;
controller.ViewData.Model = model;
using (var writer = new StringWriter())
{
await view.RenderAsync(new ViewContext(controller.ControllerContext, view, controller.ViewData, controller.TempData, writer, new HtmlHelperOptions()));
return(writer.ToString());
}
}
public async Task <Response> CreateReport([FromBody] InvoicingPrinterCriteria criteria, InvoicingPrinterVM report)
{
var viewResult = compositeViewEngine.FindView(ControllerContext, "CreateReport", false);
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = report
};
var viewContext = new ViewContext(ControllerContext, viewResult.View, viewDictionary, TempData, new StringWriter(), new HtmlHelperOptions());
var result = repo.Get(criteria);
return(await repo.CreatePDF(viewResult, viewContext, result));
}
public async Task <string> RenderToStringAsync(Controller controller, string viewName, object model)
{
using (var sw = new StringWriter())
{
var viewResult = _viewEngine.GetView(viewName, viewName, false);
if (!viewResult.Success)
{
viewResult = _viewEngine.FindView(controller.ControllerContext, viewName, false);
}
//if (!viewResult.Success)
//{
// var endPointDisplay = controller.HttpContext.Request.GetEndpoint().DisplayName;
// if (endPointDisplay.Contains(".Areas."))
// {
// //search in Areas
// var areaName = endPointDisplay.Substring(endPointDisplay.IndexOf(".Areas.") + ".Areas.".Length);
// areaName = areaName.Substring(0, areaName.IndexOf(".Controllers."));
// var viewNamePath = $"~/Areas/{areaName}/views/{controller.HttpContext.Request.RouteValues["controller"]}/{controller.HttpContext.Request.RouteValues["action"]}.cshtml";
// viewResult = viewEngine.GetView(viewNamePath, viewNamePath, false);
// }
// if (!viewResult.Success)
// throw new Exception($"A view with the name '{viewNamePath}' could not be found");
//}
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(
controller.ControllerContext,
viewResult.View,
controller.ViewData,
controller.TempData,
sw,
new HtmlHelperOptions()
);
await viewResult.View.RenderAsync(viewContext);
return(sw.ToString());
}
}
protected virtual async Task RenderPartialCoreAsync(
string partialViewName,
object model,
ViewDataDictionary viewData,
TextWriter writer)
{
if (partialViewName == null)
{
throw new ArgumentNullException(nameof(partialViewName));
}
var viewEngineResult = _viewEngine.GetView(
ViewContext.ExecutingFilePath,
partialViewName,
isMainPage: false);
var originalLocations = viewEngineResult.SearchedLocations;
if (!viewEngineResult.Success)
{
viewEngineResult = _viewEngine.FindView(ViewContext, partialViewName, isMainPage: false);
}
if (!viewEngineResult.Success)
{
var locations = string.Empty;
if (originalLocations.Any())
{
locations = Environment.NewLine + string.Join(Environment.NewLine, originalLocations);
}
if (viewEngineResult.SearchedLocations.Any())
{
locations +=
Environment.NewLine + string.Join(Environment.NewLine, viewEngineResult.SearchedLocations);
}
throw new InvalidOperationException(
Resources.FormatViewEngine_PartialViewNotFound(partialViewName, locations));
}
var view = viewEngineResult.View;
using (view as IDisposable)
{
// Determine which ViewData we should use to construct a new ViewData
var baseViewData = viewData ?? ViewData;
var newViewData = new ViewDataDictionary <object>(baseViewData, model);
var viewContext = new ViewContext(ViewContext, view, newViewData, writer);
await viewEngineResult.View.RenderAsync(viewContext);
}
}
public async Task <string> RenderToStringAsync(string viewName, object model, ViewDataDictionary viewDataDictionary)
{
var controller = string.Empty;
viewName = viewName?.TrimStart(new char[] { '/' });
Regex rex = new Regex(@"^(\w+)\/(.*)$");
Match match = rex.Match(viewName);
if (match.Success)
{
controller = match.Groups[1].Value;
viewName = match.Groups[2].Value;
}
var routeData = new RouteData();
routeData.Values.Add(ControllerStr, controller);
var actionContext = new ActionContext(_context, routeData, new ActionDescriptor());
var viewResult = _viewEngine.FindView(actionContext, viewName, false);
if (viewResult.View == null)
{
Console.WriteLine($"Searched the following locations: {string.Join(", ", viewResult.SearchedLocations)} for folder \"{controller}\" and view \"{viewName}\"");
throw new ArgumentNullException($"{viewName} does not match any available view");
}
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary())
{
Model = model
};
if (viewDataDictionary != null)
{
foreach (var obj in viewDataDictionary)
{
viewDictionary.Add(obj);
}
}
using (var sw = new StringWriter())
{
var viewContext = new ViewContext(
actionContext,
viewResult.View,
viewDictionary,
new TempDataDictionary(_context, _tempDataProvider),
sw,
new HtmlHelperOptions()
);
viewContext.RouteData = _context.GetRouteData();
await viewResult.View.RenderAsync(viewContext);
return(sw.ToString());
}
}
public ActionResult Details(
[FromServices] ICompositeViewEngine compositeViewEngine,
[FromServices] IActionContextAccessor actionContextAccessor,
string key)
{
var result = compositeViewEngine.FindView(actionContextAccessor.ActionContext, key, false);
if (result.Success)
{
return(View(key));
}
return(NotFound());
}
protected async Task <string> RenderPartail(string viewName, object model)
{
ViewData.Model = model;
using (var sw = new StringWriter())
{
ViewEngineResult viewResult = _viewEngine.FindView(_actionAccessor.ActionContext, viewName, false);
ViewContext viewContext = new ViewContext(_actionAccessor.ActionContext, viewResult.View, ViewData, TempData, sw, new HtmlHelperOptions());
await viewResult.View.RenderAsync(viewContext);
return(sw.ToString());
}
}
protected async System.Threading.Tasks.Task <ContentResult> RenderCssAsync(string viewName, object model)
{
ViewData.Model = model;
using (var sw = new StringWriter())
{
ViewEngineResult viewResult = _viewEngine.FindView(_actionAccessor.ActionContext, viewName, true);
ViewContext viewContext = new ViewContext(_actionAccessor.ActionContext, viewResult.View, ViewData, TempData, sw, new HtmlHelperOptions());
await viewResult.View.RenderAsync(viewContext);
return(Content(sw.ToString(), "text/css", System.Text.Encoding.UTF8));
}
}
public IActionResult Index(string section = "home", string content = "index")
{
// Note: Indicate the current controller-specific directory ("Organization") with the "./" prefix
var view = $"./{_tenantContext.SiteContext.FolderName}/{section}/{content}";
var result = _viewEngine.FindView(_actionContext, view, false);
if (!result.Success)
{
return(NotFound());
}
// give the full absolute view path as argument, so searching the view won't run a second time
return(View(result.View.Path));
}
protected string RenderViewAsString(object model, string viewName = null)
{
viewName = viewName ?? ControllerContext.ActionDescriptor.ActionName;
ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
IView view = viewEngine.FindView(ControllerContext, viewName, true).View;
ViewContext viewContext = new ViewContext(ControllerContext, view, ViewData, TempData, sw, new HtmlHelperOptions());
view.RenderAsync(viewContext).Wait();
return(sw.GetStringBuilder().ToString());
}
}
private string RenderPartialViewToString(string viewName, object model)
{
ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
ViewEngineResult viewResult = viewEngine.FindView(ControllerContext, viewName, false);
ViewContext viewContext = new ViewContext(ControllerContext, viewResult.View, ViewData, TempData, sw, new HtmlHelperOptions());
var t = viewResult.View.RenderAsync(viewContext);
t.Wait();
return(sw.GetStringBuilder().ToString());
}
}
