Json Helper Class in Razor Pages Project - asp.net-core

I created a simple project and I can't seem to access the Json Helper class that I see through a bunch of sample projects. For example, I'm trying to use the Telerik dropdown sample and in the code below, I get the error:
The name Json does not exist in the current context.
(same thing goes for JsonRequestBehavior) What am I missing? I've done a search in nuget for System.Web.Helpers, but I can't add the reference because the project is targeted for ASP.NET Core 2.0 while the assembly was restored using .NET 4.6.1. What is my alternative?
public JsonResult RemoteDataSource_GetProducts(string text)
{
var northwind = new SampleEntities();
var products = northwind.Products.Select(product => new ProductViewModel
{
ProductID = product.ProductID,
ProductName = product.ProductName,
UnitPrice = product.UnitPrice ?? 0,
UnitsInStock = product.UnitsInStock ?? 0,
UnitsOnOrder = product.UnitsOnOrder ?? 0,
Discontinued = product.Discontinued
});
if (!string.IsNullOrEmpty(text))
{
products = products.Where(p => p.ProductName.Contains(text));
}
return Json(products, JsonRequestBehavior.AllowGet);
}

Json(JsonResult) is a class and JsonRequestBehavior is an enum that lives within System.Web.Mvc in ASP.NET Framework. In ASP.NET Core, Json(JsonResult) lives within Microsoft.AspNetCore.Mvc.
You should be just fine with,
return Json(products);

Related

ABP: Rebuilding Localization Sources from Custom Provider

I am using ABP v4.9.0 (.NET CORE 2.2) with angular client
I built some custom localization providers. These providers get translation dictionaries from an external API.
I add localization sources on startup with these providers.
var customProvider = new CustomLocalizationProvider(...);
var localizationSource = new DictionaryBasedLocalizationSource("SOURCENAME", customProvider );
config.Localization.Sources.Add(localizationSource );
On startup, the providers InitializeDictionaries() is called and localization dictionaries are built.
So far, so good, working as intended.
Now i'd like to manually Reload these translations on demand, but I can't make this working.
Here is what I tried.
Here I trigger the re-synchronize of the language ressources:
foreach (var localizationSource in _localizationConfiguration.Sources)
{
try
{
localizationSource.Initialize(_localizationConfiguration, _iocResolver);
}
catch (Exception e)
{
Logger.Warn($"Could not get Localization Data for source '{localizationSource.Name}'", e);
}
}
In the custom provider, I first clear the Dictionaries
public class CustomLocalizationProvider : LocalizationDictionaryProviderBase
{
protected int IterationNo = 0;
protected override void InitializeDictionaries()
{
Dictionaries.Clear();
IterationNo += 1;
var deDict = new LocalizationDictionary(new CultureInfo("de-DE"));
deDict["HelloWorld"] = $"Hallo Welt Nummer {IterationNo}";
Dictionaries.Add("de-DE", deDict);
var enDict = new LocalizationDictionary(new CultureInfo("en"));
enDict["HelloWorld"] = $"Hello World number {IterationNo}";
Dictionaries.Add("en", enDict);
}
}
The provider is executed again as expected.
But when I eventually use the localization clientside (angular), I still get the original translations.
What am I missing?
Thanks for the help.
In the meanwhile I had to go for another approach.
I am now using a XmlEmbeddedFileLocalizationDictionaryProvider wrapped by a MultiTenantLocalizationDictionaryProvider.
This way, I am using db-localizations with xml-sources as fallback
Then I manually load the ressources from my API in some appservice. These localizations are then updated in the database by using LanguageTextManager.UpdateStringAsync().

Render Razor View into String using .Net Core Console Application

I have prepared a .net core console application (Framework version .Net Core 2.2) for sending email as a service. Right now its working completely fine with static html content being hardcoded into service method for generating email body string.
I am in seek of the code which provides me a solution to render a razor view to have a html string with the model data.
Tried to implement the RazorEngine dll in entity framework ver. 4.5. with below code
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GenerateEmailUsingRazor.Model;
using RazorEngine.Templating;
namespace GenerateEmailUsingRazor
{
class Program
{
static readonly string TemplateFolderPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "EmailTemplates");
static void Main(string[] args)
{
var model = GetUserDetail();
var emailTemplatePath = Path.Combine(TemplateFolderPath, "InviteEmailTemplate.cshtml");
var templateService = new TemplateService();
var emailHtmlBody = templateService.Parse(File.ReadAllText(emailTemplatePath), model, null, null);
Console.WriteLine(emailHtmlBody);
Console.ReadLine();
}
private static UserDetail GetUserDetail()
{
var model = new UserDetail()
{
Id = 1,
Name = "Test User",
Address = "Dummy Address"
};
for (int i = 1; i <= 10; i++)
{
model.PurchasedItems.Add("Item No " + i);
}
return model;
}
}
}
Expected Result:
Console Application should render the razor view and provide me the resultant html string.
I've written a clean library Razor.Templating.Core that works with .NET Core 3.0, 3.1 on both web and console app.
It's available as NuGet package.
After installing, you can call like
var htmlString = await RazorTemplateEngine
.RenderAsync("/Views/ExampleView.cshtml", model, viewData);
Note: Above snippet won't work straight away. Please refer the below working guidance on how to apply it.
Complete Working Guidance: https://medium.com/#soundaranbu/render-razor-view-cshtml-to-string-in-net-core-7d125f32c79
Sample Projects: https://github.com/soundaranbu/RazorTemplating/tree/master/examples

Sitecore Glass mapper GetItem<TypeName>(guid) always return null

I saw a related question:
Sitecore Glass Mapper always null
But unfortunately it does not give a solution for my case.
Here goes a code snippet:
var db = Factory.GetDatabase("master");
var context = new SitecoreContext();
// the ID of Needed item
var g = new Guid("{F21C04FE-8826-41AB-9F3C-F7BDF5B35C76}");
// just to test if it's possible to fetch item using db.GetItem
var i = db.GetItem(new ID(g), Language.Current, Sitecore.Data.Version.Latest);
// Grab item
var t = context.GetItem<Article>(g);
In the code above:
i is not null
t is null
Article is the simple class like:
[SitecoreType(TemplateId = "{4C4EC1DA-EB77-4001-A7F9-E4C2F61A9BE9}")]
public class Article
{
[SitecoreField(FieldName = "Title")]
public string Title { get; set; }
}
There are only one language installed in Sitecore - en, it has been specified in the web.config in the items as well.
Also I have added GlassMapperSc.Start(); to Application_Start in the Global.asax.cs and added my assembly to the list of included assemblies via var attributes = new AttributeConfigurationLoader(new[] { "Assembly.Name" }); and I succeeded to find my class in the SitecoreContext mappings.
It does not looks like a language issue, as stated in the link provided in the very beginning. And I'm struggling with it already for a pretty long time, but no luck...
Thank You!
I just noticed that you are using master db for the Sitecore DB and SitecoreContext for Glass.
The SitecoreContext class will use the database that is defined by the Sitecore.Context.Database property at runtime. This probably means that it is using the web database.
Can you check that you have published the item to the web database or instead using:
var context = new SitecoreService("master");

Web Api and MVC controller - same repository, different output

Never saw this before. I use both web api and mvc controllers in my app.
I use Structuremap MVC4 dependency injection for both controllers, which works fine.
Using the same repository, when I fetch a procuct from the MVC controller, the result is NULL, but calling for the same product from the Web Api controller, the result is the correct product.
Both hit the same method in the repository, using the same DbContext.
This is the MVC controller action:
public ActionResult ShowProduct(int id)
{
var product = _repo.GetProduct(id);//product is null
return View();
}
This is the Web Api method:
public Product Get(int id)
{
var product = _repo.GetProduct(id);//Returns correct product
return product;
}
This is the repository method used by both controllers:
public Product GetProduct(int id)
{
using (var db = new ProductContext())
{
var product = db.ProductDb.Include(a => a.Orders).FirstOrDefault(c => c.Id == id);
return product; //Call from MVC controller returns NULL
}
}
Any ideas why this happens?
Uhm, I'm almost afraid to tell what the reason for this is...
The two controllers exist in each of their own web projects, and the project with the MVC controller was missing the connectionstring in web.config... DUH...
Think I need some sleep.....

CSS Intellisense not working for MVC 4 project in Visual Studio 2012 Ultimate

Have created a brand new Visual Studio 2012 Ultimate SP2 MVC4 project but unable to get CSS class selector intellisense to work?
When I type <p class="m" .... I should get the class "myClass" appearing in intellisense dropdown but nothing happens.
The file I have listed below is: \Views\Shared\_Layout.cshtml
Any Ideas ?
Edit: Have re-installed VS2012 on brand new windows 7 system (running on Mac OSX parallels 8) and still acting in the same way. Also seems the same for MVC 3 projects.
Extensions installed:
Try adding Web Essentials 2012 extension for Visual Studio 2012: http://visualstudiogallery.msdn.microsoft.com/07d54d12-7133-4e15-becb-6f451ea3bea6?SRC=VSIDE
And/Or
Try adding Microsoft Web Developer Tools extension.
I have both of these and using your same example the intellisense works like a charm.
I tried all the above mentioned remedies and suggestions. None of these worked in my environment. According to Microsoft (Under Microsoft connect's bug id 781048), they have not implemented CSS class intellisense for MVC/Razor files but are working on including this in a future release.
I have a 10 minute webcast example of extending VS2012 intellisense that adds one solution that will add intellisense to your VS2012 environment: a Visual Studio Intellisense Extension
The webcast uses MEF to extend Visual Studio to add an intellisense completion source that scans the currently loaded project for CSS class names to add as an intellisense completion set. Here is the css completion source class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.Composition;
using Microsoft.VisualStudio.Language.Intellisense;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Operations;
using Microsoft.VisualStudio.Utilities;
using EnvDTE;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Collections.Specialized;
namespace CssClassIntellisense
{
internal class cssClassList
{
public string cssFileName { get; set; } //Intellisense Statement Completion Tab Name
public HashSet<string> cssClasses { get; set; }
}
internal class CssClassCompletionSource : ICompletionSource
{
private CssClassCompletionSourceProvider m_sourceProvider;
private ITextBuffer m_textBuffer;
private List<Completion> m_compList;
private Project m_proj;
private string m_pattern = #"(?<=\.)[A-Za-z0-9_-]+(?=\ {|{|,|\ )";
private bool m_isDisposed;
//constructor
public CssClassCompletionSource(CssClassCompletionSourceProvider sourceProvider, ITextBuffer textBuffer, Project proj)
{
m_sourceProvider = sourceProvider;
m_textBuffer = textBuffer;
m_proj = proj;
}
public void AugmentCompletionSession(ICompletionSession session, IList<CompletionSet> completionSets)
{
ITextSnapshot snapshot = session.TextView.TextSnapshot;
SnapshotPoint currentPoint = (SnapshotPoint)session.GetTriggerPoint(snapshot);
if (TargetAttribute.Inside(currentPoint))
{
var hash = new List<cssClassList>();
//read any .css project file to get a distinct list of class names
if (m_proj != null)
foreach (ProjectItem _item in m_proj.ProjectItems)
{
getCssFiles(_item, hash);
}
//Scan Current Editor's text buffer for any inline css class names
cssClassList cssclasslist = ScanTextForCssClassName(
"Inline", snapshot.GetText());
//If file had any css class names add to hash of files with css class names
if (cssclasslist != null)
hash.Add(cssclasslist);
var _tokenSpanAtPosition = FindTokenSpanAtPosition(session.GetTriggerPoint(m_textBuffer), session);
foreach (cssClassList _cssClassList in hash)
{
m_compList = new List<Completion>();
foreach (string str in _cssClassList.cssClasses.OrderBy(x => x)) //alphabetic sort
m_compList.Add(new Completion(str, str, str, null, null));
completionSets.Add(new CompletionSet(
_cssClassList.cssFileName, //the non-localized title of the tab
_cssClassList.cssFileName, //the display title of the tab
_tokenSpanAtPosition,
m_compList,
null));
}
}
}
private ITrackingSpan FindTokenSpanAtPosition(ITrackingPoint point, ICompletionSession session)
{
SnapshotPoint currentPoint = (session.TextView.Caret.Position.BufferPosition) - 1;
ITextStructureNavigator navigator = m_sourceProvider.NavigatorService.GetTextStructureNavigator(m_textBuffer);
TextExtent extent = navigator.GetExtentOfWord(currentPoint);
return currentPoint.Snapshot.CreateTrackingSpan(extent.Span, SpanTrackingMode.EdgeInclusive);
}
private void getCssFiles(ProjectItem proj, List<cssClassList> hash)
{
foreach (ProjectItem _item in proj.ProjectItems)
{
if (_item.Name.EndsWith(".css") &&
!_item.Name.EndsWith(".min.css"))
{
//Scan File's text contents for css class names
cssClassList cssclasslist = ScanTextForCssClassName(
_item.Name.Substring(0, _item.Name.IndexOf(".")),
System.IO.File.ReadAllText(_item.get_FileNames(0))
);
//If file had any css class names add to hash of files with css class names
if (cssclasslist != null)
hash.Add(cssclasslist);
}
//recursively scan any subdirectory project files
if (_item.ProjectItems.Count > 0)
getCssFiles(_item, hash);
}
}
private cssClassList ScanTextForCssClassName(string FileName, string TextToScan)
{
Regex rEx = new Regex(m_pattern);
MatchCollection matches = rEx.Matches(TextToScan);
cssClassList cssclasslist = null;
if (matches.Count > 0)
{
//create css class file object to hold the list css class name that exists in this file
cssclasslist = new cssClassList();
cssclasslist.cssFileName = FileName;
cssclasslist.cssClasses = new HashSet<string>();
}
foreach (Match match in matches)
{
//creat a unique list of css class names
if (!cssclasslist.cssClasses.Contains(match.Value))
cssclasslist.cssClasses.Add(match.Value);
}
return cssclasslist;
}
public void Dispose()
{
if (!m_isDisposed)
{
GC.SuppressFinalize(this);
m_isDisposed = true;
}
}
}
}
As an FYI, you can also address this issue using Resharper. But that is a 3rd party product that needs to be purchased for Visual Studio
Is it just CSS intellisense that's failed or has it completely stopped throughout Visual Studio?
I had a similar issue that effected the whole of my Visual Studio 2012. It was a while back but I remember deleting a folder from my appdata. Take a look at this link, hopefully it will help:
http://www.haneycodes.net/visual-studio-2012-intellisense-not-working-solved/
You are not going to get intellisense for CSS in VS2012 for Razor views. There is a workaround to use intellisense. Just create one test view(.aspx) using ASPX view engine and include your css file there. Now intellisense will work in new aspx view. All you have to do is copy paste the css class from aspx to Razor view(.cshtml or .vbhtml). I hope this helps.