Angular4 download href pdf

I m experiencing similar error on Firefox browser as well It's because the element you are looking for is inside a frame, switch to the frame first and then search for the element. Unable to locate element using selenium webdriver in python. Print a random row from a mysql query. Validation not working in partial view. Symfony upgrade to 3. Run an Android App.

Rails 4 - pundit - how to write if statement to check user permissions. Advantage of creating a form as a service rather than just a classType? How to show all invalid objects in PostgresQL. Construct image from 4D list. The include directive, allows us to include fields based on some condition. You see an include directive usage in the below sample. It reduces code repeat.

Use three dots … prefix when to use a fragment. But mutations allow to send data to the server. We will not cover this subject. So create an empty folder, open CMD in the folder and write the below command to create your empty Angular project.

In our sample, the sample project is an hotel reservation application. HasData new Room , "yellow-room", RoomStatus. HasData new Room , "blue-room", RoomStatus. HasData new Room , "white-room", RoomStatus. HasData new Room , "black-room", RoomStatus. HasData new Reservation DateTime.

AddDays -2 , DateTime. AddDays -1 , DateTime. NET Core Startup. DbConnectionString ; services. AutoMapper must be configured in the startup of your project. So write the below line in Configure method of Startup. And apply migration to create your database. Write the below commands to Package Manager Console.

First of all, create a controller to feed the Angular client. NET Core startup. GetRequiredService ; services. AddGraphTypes ServiceLifetime. You can try different GraphQL queries to test it out. Each argument can be added with a type, description and default value. In the below GraphQL query we filter reservations by room. Simple and straight-forward! To do this, we use named queries.

Add new ExecutionError "reservationId must be greater than zero! GetAsync "? AddMvc services. GetReservationsAsync ; response. Client 1. This is our client that will use Graphql. Client to fetch the reservations data.

PostAsync query ; if response. It is designed from the ground up to make it easy to build UI components that fetch data with GraphQL. Many of the speakers and attendees are from Microsoft stack and mainly hands on coding in. As a developer, it was nice to meet Scott Hanselman and Jon Galloway. We had an opportunity to show them our new web application framework [abp. Especially, Scott liked our new tag helpers and dynamic forms for ASP.

Check out dynamic forms! And it was very exciting to see [ASP. We had nice conversations with developers from the different parts of the world and discussed about software topics. We brought there really high-class swags like wireless earphones, smart watches, hand-made chocolates and a brand-new MacBook Air. We can only see info that we request to method with id that is not exist. NET Core 2. You now have the opportunity to address these warnings using code fixes.

Before adding analyzer:! Check the code:! It is documented now. NET Core scaffolds. If your actions follow the pattern that scaffolding produces, you should be successful using the default conventions. This applies the specified convention to all controllers in an assembly. This attributes accepts both the type and the convention method.

Define a static class to define rules. Introduction We have recently moved our [ASP. NET Core 1. In this post, I will share my experiences and explain mechanics of this migration in brief. NET Framework 4. NET Core platform and migrate to the new. There are pros and cons of project. Old solution structure was like that:! Obviously, I created a new solution and empty projects inside it. Then copied all files into this solution manually.

All layers including test project except the Web layer are successfully compiled in new project format without any change. Nuget Packages After moving code to new solution folder, I also added needed nuget package references to project. For example, my project.

AutoMapper": "0. Zero": "0. Ldap": "0. EnvironmentVariables": "1. Json": "1. UserSecrets": "1. With the new xproj format, we should do it in project. But when it comes to ASP.

NET Core, we have much things to talk about. Since we are using many client side libraries and we have many razor views, I manually changed all views to include related styles and scripts. An example css include approach in ASP. Using this tool is much easy but another time consuming work.

NET 5. In new ASP. So, we converted all of child actions to components. Now, we should derive it from RazorPage class. So, we changed our base view class. So, I also changed static calls to injections. NET Core Controllers. So, we decided to move our existing EF 6. We found a tool, [Migrator. EF does good job. But what about our existing Migration classes? We manually changed their format to properly work in new tool. Migrations", "6. To do that, you should open the.

Then we could able to run migrator tool. NET Core has similar model binding approach with the previous version but also has some differences. I moved all such files into this new folder. Nuget has also other problems with client libraries containing static files.

Fortunately, now bower is fully integrated to Visual Studio So, I added all libraries with bower. One more good thing; Nuget does not add package files into the solution anymore and uses from a central directory in the local computer, which is much more performant and does not add unnecessary files into our solution folder. Startup File ASP. We configure all libraries including ABP in this class. Social Logins Since authentication infrastructure is completely changed, we should not use OWIN based social login middlewares anymore.

Current SignalR 2. While ASP. NET Core pipeline. Fortunately, I did it. NET Core middleware pipeline. NET Core has a nice tool to store sensitive configuration values out of the solution folder. Thus, our secret or custom configuration values like passwords remain in our local computer, instead of source control system. NET, it was relatively easy to add a token based auth mechanism to our applications.

It was including infrastructure to generate and validate tokens. In ASP. NET Core, there is no mechanism to generate tokens but there is a package to validate it.

NET Core and we easily switched to that new version which is currently in beta. Introduction Creating a modular application is hard. You need to separately develop module pages, components but make them integrated and working together as like a monolithic application UI. They are generally located under wwwroot folder of the application.

NET Core has a pre-compile option, the main point is same. NET Core work with the resources located other than the physical file system. These resources are registered to the Virtual File System on the application startup. We have created VirtualFileSystemOptions for that purpose. I will not share the implementation in this article, but you can guess it.

We should also replace it by the Virtual File Provider. This part is also very easy. In your case, you can set FileProvider to any class that implements the IFileProvider interface as explained before.

I planned to write more articles on modular application development on ASP. NET Core applications. The motivation behind these principles are; - Effectively designing services and their dependencies. NET Core in a basic level. If not, please read the [ASP. Thus, the service can not be constructed without its dependencies. Property Injection ASP. Logging; using Microsoft. Delete id ; Logger. Dependency injection container can set the Logger if it is available registered to DI container before.

Otherwise, always check for null while using the dependency. Service Locator Service locator pattern is another way of obtaining dependencies. In a web application, every web request creates a new separated service scope. That means scoped services are generally created per web request. That generally means that they are created only one time per application and then used for whole the application life time. DI container keeps track of all resolved services. Because the transient service becomes a singleton instance when a singleton service injects it and that may cause problems if the transient service is not designed to support such a scenario.

Resolving Services in a Method Body In some cases, you may need to resolve another service in a method of your service. In such cases, ensure that you release the service after usage. Following this principle makes your code cleaner. Singleton Services Singleton services are generally designed to keep an application state. A cache is a good example of application states. This service should be registered as singleton.

Otherwise, caching will not work as expected. Because, transient services might not be designed to be thread safe. If you have to use them, then take care of multi-threading while using these services use lock for instance.

Because ASP. So, if you register a service as scoped, it can be shared during a web request. So, scoped service does not always means instance per web request. You may think that you do not make such an obvious mistake resolving a scoped inside a child scope. But, this is not a mistake a very regular usage and the case may not be such simple. If there is a big dependency graph between your services, you can not know if anybody created a child scope and resolved a service that injects another service… that finally injects a scoped service.

Thus, all these services will use a single instance of the service during the same web request. I shared some good principles based on my own experiences during development of the [ASP. The conference consists of two days of workshops and three days of in-depth technical sessions. Plenty of refreshments and snacks to keep you going, a great lunch. We exhibited at SDD Conference and had a chance to speak with the developers from all around the world. Most of the developers were from.

Some folks have already seen us. We introduced them the new features and next plans. Some heard the products for the first time and they were very excited to start a new project with our products.

And developer like gadgets. Besides, we brought some really delicious handmade chocolates that some people even asked for their brand. It was very hard to decide which sessions to sit in on and which to skip. Also the rest of the 40 world-class speakers very nice and very educational. We look forward to seeing you for the next conference. Stop by our booth and share your ideas with our lead developers. Thanks to all speakers and attendees for making it such an enjoyable week!

When sites are correctly designed, developed and edited, all users have equal access to information and functionality. I'd love people to be able to find this content! I think is more interesting than the last one. And also you should use heading tags in a certain order. Recently I updated all packages in my Xamarin project. And suddenly the project stopped building. So I read a bunch of docs on internet. This upgrade has been done with Visual Studio but Xamarin was late to switch it.

I searched for switching to the new format and found a couple of ways for achieving this problem. So I have not tried the above solution.

Then I came across to this tool which looks a promising solution. Click the below link to install the Visual Studio Extension. It is highly recommended that you perform this on a source-control enabled directory so you can easily undo if something goes wrong. Happy coding! So I created a Regedit entry that adds a new menu to the Windows context menu.

By clicking this item your Angular project will start up. So you can see it on a non-angular folder as well. Securing a web application is crucial these days. When it comes to web developers, fixing the vulnerabilities should start from the first floor; from developer himself. You as a simple developer not really need to know all the hustle and bustle of pen testing. There are several good tools for scanning web applications.

It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing.

ZAP is cross platform. What it does is to create a proxy between the client and your website. While you navigate thru all the features of your website, it captures all actions. Then it attacks your website with the known techniques. Project was initiated in and still being improved. What it gives you extra configuration like scheduling your penetration test or starting with a particular URL.

If you want to reach your website configuration or test results later, you should save the session for later. What is passive scan? In terms of penetration test, a passive scan is a harmless test that looks only for the responses and checks them against known vulnerabilities. And be aware that you can not detect even a SQL Injection with passive scan.

What is active scan? Active scan, attacks the website using known techniques to find vulnerabilities. Active scan does modify data and can insert malicious scripts to the website. So when you really test your website against security issues deploy it to a new environment and run the active scan.

And only run the active scan for the sites you have permission! On the following screen I enumerated windows with 4 sections. By doing this you will no longer see other websites that you are not interested in.

In the request tab, you see the window is divided into 2 parts. The response windows is similar to the request window. Shows the response header and body. So a user is signing in with credentials. And the server returns http error. And on the 3rd window you see some information about this problem. It shows the exact URL and a yellow flag medium risk. This information can be used to launch further attacks against the web application.

The alert could be a false positive if the error message is found inside a documentation page. It suspects the website throws an unhandled exception.

This can be really vulnerable when a website shows some exception stack to the attacker and gives info about the environment or code. It is a false-positive alert because no information is being exposed. Implement custom error pages. You should hit all the features, go thru all possible actions. This phase is very important! It will take some time according to the link counts of your website. To install an extension, click on the Marketplace tab and write extension name in the box.

No need to restart. There are useful extensions! This will go all the attacks in memory and makes the scan robust. To do this, right click the target website in the left pane. Now you see there comes a new website URL in the pop-up window which adds your website as regular expression.

By doing this you hide the other websites and you prevent accidental attacks. This is the main goal. So run it only on the allowed websites. The followings are nice to have options you can do; Fuzzer Fuzzing is sending unexpected or random data to the inputs of a website.

This is an optional security step. Click on the post data and highlight the text you want to attack. Select the file you want to use.

This file is a database that will be used to brute force to the input. In that case, forced browsing comes in. Forced Browsing uses brute force dictionaries to check if there are any other hidden URLs like admin panel or something that can be hacked. If you want to change any particular request post data or response data, right click on the site, choose Break, in the Add Break Point window click Save.

Whenever you make a request from the original website, the ZAP window will bring to front and allow you to modify the request. After you press the green play button on the toolbar, ZAP brings you the response sent by the server.

And you can modify response as well. So your browser will retrieve the altered response. Scanned your website for the known vulnerabilities. But without reporting those issues properly, you are not complete. In the following screen, there are 5 alerts with colorized flags. If you have no red flag then you are lucky! For those with red flags, first focus on them and fix them asap. Secure coding ;. Then, we will build a basic application called Hero Shop. This application will display list of heroes and give you a starting point for your ASP.

SPAs provide better developer and user experience. SPA frameworks are not considered as a good solution for public websites because of some well known reasons like long initial app load time and SEO optimizations.

Angular provides universal rendering in order to overcome these technical hassles. Select Empty project in the next step. For this article, we used angular-cli v1.

Just open package. Change the value of root property in. You will get the below screen if you succeed. Yarn is less error prone. You will create another app for your sample. The original app definition is created for default usage which is not universal rendering. Here is the new app definition. Now, your angular-cli app is ready for server side rendering.

You can start to work on ASP. NET Core application. Preparing ASP. Now your project must be building in Visual Studio. Add an ABP nuget package reference to your public website. Here is the Startup. NET Core app must be up and ready at this stage.

In order to transfer your server side rendered app to client, you need two basic model classes. Here is the updated HomeController. Then, press F5 to run ASP. It should display server side rendered app. The content of the page is served by ASP. Here is the response of Index action:! Now, you can start creating the entities. You will have two simple entities; Hero and HeroCompany. There was something wrong with Bootstrap css and angular-cli working together. Bootstrap v4 has just been released a few days ago at the moment I was writing this article.

Combine Directory. We have already done it. I hope this article helps you out to handle it smoothly. NET Boilerplate v3. In this article, I will highlight some new features and changes. Once you configure it for your entities, it can automatically write audit logs for every property change of an entity. It may contain one or more entity changes. It belongs to an entity change set. It belongs to an entity change. So, for a relational database, all these changes are stored in three tables:!

How to Change the Store? NET Boilerplate is an extensible framework. OData package. NET Boilerplate based projects easier. Allow Modules to Configure MVC Routes One problem with modular approach is that every module may want to contribute to the main application configuration. Route definition is one example. A classic route definition for an ASP. With the ABP v3. Finally, we should modify the app. They liked it much and will help this project to gain more community.

NET Boilerplate framework. We had an amazing week in London. About software related attendees from all around the world met together. NDC London is a set of talks for software developers and architects. NET team. And Scott Hanselman will try to help us to make the framework much apparent by.

NET community. Informed them about our projects, and had great discussions at our booth. This is the first time we got on the stage with the our frameworks. London January is a cold time in London! As being engineers, we have visited science museum. We will probably participate in next year too. NET Zero based applications. I will focus how to integrate DevExtreme to project and how to use it. Then I will create an advanced paging, sorting, filtering DevExtreme datagrid example.

NET Zero, too. To use DevExtreme in project just add scripts and styles. I will install required resources using npm. I commented to the added and removed lines. Now we are ready to run project and see how it looks.

Like JQuery version, you should add devextreme npm packages you can use different ways like bower, CDN or local etc. I will use npm like before. I just added some filtering configuration. It is quite easy like jquery version. NET Core controls. Npm packages and bower packages are different, so if you use npm to install packages, DevExtreme controls will not run, because there are missing files that are downloaded from npm.

For example:! Conclusion I used examples from DevExtreme Demos page. I just made minor changes. Because, DevExtreme grids suitable for full list of data. But ASP. NET Zero designed to return always paged data.

If you enabled filtering feature, grid will search data in current page. You can surely return full table from server, but it is not performant if the table has too much data rows. Recently we added a Xamarin project integrated to Asp. Net Zero backend. I am sharing my experiences with this article. It solves dilemmas many developers face when developing cross-platform apps, separate coding languages and UI paradigms. With Xamarin. Forms, interface design for all three platforms can be accomplished within its XAML-based framework.

A sample application can easily be developed and published to market when you follow the getting started docs. Components library grows rapidly. Components range from user interface controls to code libraries, as well as user interface themes.

Microsoft provides a strong support for further Xamarin development. If you are. Net developer, Xamarin looks very promising and tempting. When you dive into Xamarin development, it is not as easy as it looks from the outside. Sometimes you might need to use Visual Studio Preview version. You may not connect it from emulator. Even you can reach your Web API from localhost, in Android emulator you need to use loopback address And your mobile needs to be in the same network.

By default Kestrel configuration, it does not accept requests outside of localhost. But quite often Visual Studio hangs while attaching debugger. So what I usually do is start emulator manually. When it settles down, I start Xamarin project. Especially if the feature is reachable in deep menu taps, it even slows down your development. For such cases, you can control your device from your computer. For sure there are alternatives. Everybody is complaining about it.

At first I saw, I was very excited but when I tried to run my app with that I got different exceptions. The first exception was Access To Path Denied. Net Standard. Finally I found LiveXaml. Works better than others. Great tool, response is extremely quick. When you put a ListView in ScrollView, you might have scrolling problems. Nested ListViews are another problematic case. Committing often is a general best practice.

After some code change, Xamarin can stop to build and give nonsense errors. You may not understand which code breaks up things. Committing often is a safeguard, in case you make a small change in your code and something goes wrong and you lose the version you were working on. It reduces the necessity for human memory and relies on redundant computer storage instead. A mobile app should never exit unexpectedly. Things are not always what they seem!

When an unhandled exception occurs, typically Android will be destroying the process. It could be because the operating system kills the app before the app can do anything. Try to integrate with that. You get 2 free apps with HockeyApp. Forms applications. All Xaml must be hand-written. And for me it is the biggest disadvantage. Microsoft should definitely provide a Xaml Designer. Net developers Xamarin is the best way to go.

Sure, the output will never be native in every sense of the word. But when it comes to the way of creating app that would operate on different platforms with a single code, Xamarin has come closest in imitating a native mobile application and is definitely a technology worth taking advantage of.

We are proud to release ASP. It supports Android and IOS. We planned to add other important features of the web application by the time. But we want to keep the mobile application simpler than the web as expected.

Metronic 5 UI! An example layout that has dark header with top menu:! This page is valid only if database is not available and makes a new deployment much more easier. Road Map We are constantly improving code base to provide you a strong architectural model and clean code base for your solutions.

By the time, we think to add more automation for common tasks. Our goal is to assist you on your development progress too. The items on road map are subject to change based on customer feedback and our internal decisions, but you can expect to see most of them in next versions. I will reproduce the web api to test load balancer. These web api projects will use the same cache server redis to sharing data. Globalization; using System. Text; using Microsoft. Mvc; using Microsoft.

Distributed; namespace WebFarmExample. ToString CultureInfo. Set "serverTime", Encoding. Get "serverTime" ; ViewBag. And I am modifying it like following. Now, web api project is ready to publish and run it on docker. When I run this command, it creates an ouputs folder that contains wep api publish folder in following location.

Now, web api project is running on docker. First, I will check if the docker container is running. When I run the command docker ps, I can see the container is running. And I am checking it with browser. I finished web api step. At next step, I will try to add redis cache to store web api keys.

Latest version of the file is looking like following. Finally, I am adding some code in web api project to use redis cache to store cache data. Before this change we need to download redis cache extensitons. Redis StackExchange.

AddMvc ; services. I am running powershell scripts in order first, build-all. To understand if redis is realy running, I will call the actions in controller that are managing the cache keys. For example, I will call action that set cache key and second I will call action to get cache key.

And result:! We are getting above errors, because redis is using different ip and this ip is assigned by docker automatically. There are two way to fix this. First is hardcoded; we can add this ip to redis configurations in web api startup class. There an elegant way to fix this error that I mentioned above. ToString ; options. After this changing, web api project will resolve the dns of machine that is deployed on.

I finished the adding redis step. Adding Haproxy to Web Farm I will add haproxy to project to load balancing. How can we know if it works? After set cache data, I will try to get the same cache value for different machines. What is an application framework? An application framework make writing applications easier. To explain in detail, the framework takes all the complexities of interfacing with the different environment and simplifies them for you.

It handles all the non-business-related details for you. So you can only focus your business and save time. The Application Framework lets you build applications from scratch with writing less code. And it prevents you from repeating yourself. What are advantages of using an application framework? When developing new web applications, we need the same requirements. Starting a new enterprise web application is difficult.

First approach is pretty good if your company is big enough and has time to develop such a framework. NET Boilerplate? It is one of the most starred application framework in. Zero basic layout with authorization full. NET Core basic layout. Zero basic layout. ABP Framework have a great community and it is updating, constantly. NET Core provides a minimal feature set to use default services cotainer. NET Core is vey primitive. NET Core that supports constructor injection by default.

We are getting regisered services with using service provider. Transient This lifestyle services are created each time they are requested.

Scoped Scoped lifestyle services are created once per request. Singleton A singleton service is created once at first time it is requested and this instance of service is used by every sub-requests.

First, I am creating service classes. WriteLine "Transient service is created! WriteLine "Scoped service is created! WriteLine "Singleton service is created! BuildServiceProvider ; Console. WriteLine ; Console. WriteLine " 1st Request " ; Console. WriteLine " 2nd Request " ; Console. WriteLine "" ; Console. And the result is;! In this example, both first instance and second instance are in the same scope. As you can see, scoped service instance is created more than one times in different scopes.

In this part, we tried to understand ASP. NET Core is working. In this step, we will examine some of ASP. Because, some of these features are more important to understand how this features are used in framework. Also, if we know this features, we can design our project with better design. Factory Method First, I will create objects to test. Instance Registration You can create an object instance before registering it.

Object for instance registration. ImplementationInstance; Console. And the result:! Generic Type Registration I think, this is one of the best features.

Suppose we have a generic repository. And its easy to register and resolve. This feature gives us some flexibility. I am defining objects to test this feature. WriteLine service. WriteLine myService. ToList ; Console.

Replace ServiceDescriptor. And when I want to get service, It gives me the last registered service.