Asp.net complete tutorial pdf

Language Support:. NET languages from Microsoft. CoreFx: A Set of framework libraries. CoreCLR is the. NET execution engine in. NET Core, performing functions such as garbage collection and compilation to machine code. As the dot net core is cross-platform so we can use several types of machines such as Windows, Mac, and Linus to develop dot net applications.

Application Types: We are going to discuss the following as part of this course. Note: In the above any of the listed application types we may use traditional ADO.

That does not mean you need to be an expert on these technologies. It does not show any Course Info and Navigation. Sir, you are an amazing teacher! Thank you very much for your help and looking forward for the rest of articles. From very soon we will be update the articles to latest version as well as will add the next articles.

But, sir I found. For e. Sir I would be really thankful if you could provide some more knowledge on. As I am already addicted to the way you teach, so articles provided by you will really help.

Hi we are planning to update the dot net core with latest version and we are currently working on the same. Can I apply Angular 2 for Front-end development for web pages?? Its because I want to create a web site that can store pictures from my users, but I also want it to be eyr-candy for users. NET Core because I always understand that it serves only as a backend project usage. Your email address will not be published. Skip to content. Course Information. Dot Net Tutorials Author. NET Core Framework.

Creating ASP. Skip to main content. Start your free trial. The Complete ASP. Book description Use this ASP. It will help you code confidently and efficiently, and provides just what you need for context. The book starts with detailing how to set up your development environment, and then introduces a variety of tools and technologies to build, test, and deploy your API.

Give yourself five gold stars and a pat on the back. Back over in the Controller, add the following code to implement:. The route to this controller action includes an additional route parameter, in this case the Id of the resource we want to retrieve; we can specify this in the HttpGet attribute as shown.

The controller action requires an id to be passed in as a parameter this comes from our route; see point 1 and returns an ActionResult of type Command.

We check to see if our result is null and, if so, return a Not Found result. Otherwise if we have a Command object, we return a OK and the result. Our URI has changed to reflect the route we need to use to hit our endpoint. Single Resource returned. These both return mocked Model data. We want to tie this altogether with a Database, DB Context, and an updated instance of our repository so we can work with real dynamic data that persists over time.

So, what are we waiting for? Typing docker ps should show you the number of running containers. Just before I take you through the command, we just issued in a bit more detail; if you installed the Docker plugin for VS Code, you should see something like this.

You will also see that it lists the available images you have on your machine. In this case, we are setting the password for the default user: postgres. These are most usually images provided by the vendor of the product in question. Open DBeaver and 1. Click the New Connection icon.

Select PostgreSQL. Click Next. If you are running your database on a separate machine or even in a virtual machine, issues here are almost always due to firewall or other network settings. Again, depending on how you installed, the server will depend on whether you set the password value for this.

Assuming you have successfully connected though, we can move on. Enter the ORM. Just trust me; we need the tools! First, check if you already have them installed; to do so, type dotnet ef You should see output similar to the following if you do. As you are aware though, we will be using both a repository and DB Context in this tutorial. EntityFrameworkCore dotnet add package Microsoft. Design dotnet add package Npgsql. PostgreSQL Opening the.

Models using statements. Save the file and perform a dotnet build to ensure there are no compilation errors. Open appsettings. As previously mentioned, we have specified the name of our database in our connection string CmdAPI , but the actual database does not yet exist on our server; a quick look at the databases in DBeaver will confirm that.

We only have the default postgres database, but as yet, CmdAPI is not there. In order to supply our connection string currently in appsettings. Side note: Casting your mind back to the start of the tutorial, when we had a choice of project templates.

OK, so add the following code shown in bold to our startup class: using using using using using Microsoft. Add a new using directive: Microsoft. Create an IConfiguration interface and set up in the class constructor. Does this pattern seem familiar? If not, maybe return to Chapter 6 and review. In particular, it means we can read in our connection string and pass it to the DB Context. We include a new using directive.

We register our CommandContext class as a solution-wide DBContext in the Service Container , and we point it to the connection string PostgreSqlConnection that is contained in our appsesstings. This is accessed via our Configuration object.

UseSqlServer Phew! First off, your command line should report something along the lines of the following. This method is called to create new items. Our table columns; note the data annotations we added to our model have been replicated.

Used to roll back the changes made in the Up method. That is incorrect. The migrations file will look slightly different depending on which type of database you choose to use e.

PostgreSQL etc. I learned this when I 1. Used SQL Server as my database 2. UseNpgsql 3. Ran and generated my Migrations File 4. Switched my provider to PostgreSQL opt. Double-check the formatting of the connection string. For example, copy and paste it into something like jsoneditoronline. For example, passwords are case-sensitive. Check that a the database user you created exists on the server and b check that it has the necessary permissions.

All going well, a number of things happen here: 1. Our database CmdAPI is created as it did not yet exist on the target server. Our CommandItems table is created which is the persistent equivalent of our Command model. CmdAPI database 2. We then need to update our two methods as shown by the code here making sure to add the using statement to using System. Linq at the top of the file : using System. Class constructor utilizing the injection of or DB Context.

NET Core! To be honest, I was going to try and make it smaller, but then I felt the flow would not be as good. Why am I warning you about pushing our code up to our public GitHub repository? Go over to GitHub, and look at the appsetting. We need a way of keeping these details secret. Imagine if you had to make code changes directly to a live customer environment? Yes, you can break things in the development environment without fear of impacting customers, but if you break the build, you will have the wrath of the other members of your team to deal with!

I know this from bitter experience. This is where the live production code sits and runs as the actual application, be it a customer-facing web site or in our case an API available for use by other applications. So, are they the only two environments you can have? There are of course ways to simulate these legacy systems, but again, there is really no substitute for the real thing. An easy fix when I realized the issue, but something as simple as that can be stressful and also damaging to your own reputation!

Refer to the following diagram to see my environmental setup yours should mirror this to a large extent.

Microsoft Azure. Environment variables can be specified, or set, in a number of different ways depending on the physical environment Windows, OSX, Linux, Azure, etc. So, while they can be set at the OS level, our discussion will focus setting them in the launchSettings. A fuller discussion on multiple environments in ASP. NET Core can be found here. The value of commandName specifies the webserver to launch.

That is why it is so important we are aware of our environment. Well there are a number of different answers to that; to my mind there are two broad approaches: 1. Leverage the power and behavior of the. While option 1 is a possibility indeed this pattern is used in many of the default. This is the opposite of how this works when we talk about launchSettings. As previously mentioned, the contents of launchSettings.

So be careful! NET Core here,3 for a further overview. This means that only our appsettings. Do this, run your app, and explain why you get this result.

We will cover our Production connection string in the Chapter We solve that here. Well I gave you a bit of a clue in this chapter already. This means that individual users can store among other things the credentials that they use to connect to a database. As the file is secured by the local file system, they remain secure assuming no one has log-in access to your PC. For this we need to make use of GUIDs.

Do we 1. Want to store our entire connection string as a single secret. Store our User Id and Password as individual secrets and retain the remainder of the connection string in the appsettings. So where did our secrets end up? UseNpgsql builder.

This is where we a. Replace the original connection string with the newly constructed string using our builder object. Save your work, build it, then run it. Just cast your mind back to the following diagram. Moving over to our repository and taking a look in the appsettings. Taking it further, depending on what type of operation we are performing Read, Create, Update, etc.

With that I think we should move on to coding. And to be honest, yes it will, but is nonetheless still a valid use case. You will notice though that in this case, there are no Data Annotations we will be utilizing them again, just not for this DTO. We now need to move on to setting up AutoMapper. DependencyInjection This will install the AutoMapper package; confirm this by checking the.

AddAutoMapper AppDomain. GetAssemblies ; services. AddScoped ;. For more detail on how to use AutoMapper with Dependency Injection in. Dtos; using CommandAPI. Our class inherits from Automapper. We add a simple class constructor. Any ideas how we do that? For those of you that said Constructor Dependency Injection, well done!

So over in our Controller, add the following highlighted code:. Dtos; namespace CommandAPI. Added our two new using directives. Created a new read-only field to hold an instance of IMapper. An instance of IMapper will be injected by the DI system into our constructor. This pattern should be very familiar to you now as we have used it multiple times within our API; the only point of note is that you can see we can inject multiple instances into our Constructor.

We can now update our two existing controller actions to make use of AutoMapper and return our DTO representation to our consumers as shown by the highlighted code in the following:.

Does the same thing as 1, except we are working with a single Command object as the source and returning if available a single CommandReadDto object in our OK method. Save all your code and run as before. In this chapter we address this and move up a gear to finalize our remaining four endpoints. Save the changes pending on the DB Context. Changes will then be reflected in the PostgreSQL database.

We need to further Save the pending changes for that to happen. Again, I wanted to call that out here, as it becomes relevant in a couple of areas as we move into implementing our remaining endpoints. Simply because the responsibility for creating a unique id has been devolved down to our PostgreSQL Database.

When a new row is inserted to our CommandItems table, it is at that point that a new unique id will be created for us. An operation is idempotent when performing the same operation again gives the same result. Our create endpoint is therefore not idempotent.

Why have I included this? We use this comparison operator to return true if the result of save changes is greater than or equal to 0 this will be a positive integer reflecting the number of entities affected or of course 0 if none are2. Make sure you remember to save the file. So over in the CommandsProfile. Return DTO Type As described in the endpoint attributes, we expect to return the newly created resource as part of our response back to the consumer.

The answer to that is Binding Sources. For controllers that are decorated with the [ApiController] attribute as ours is , the default location of model objects is the request Body. Therefore, the commandCreateDto parameter of our action will be populated with the object we provide in our POST request body. Persist Our Data In these two steps, we take the newly created Command model from step 4 and pass it to the CreateCommand method of our repository.

It basically fulfills the desired behavior of our Create endpoint. If we take a look at this method again, we need to explore one item a little further. All that remains to do is perform some manual tests. Assuming all is well, run up your server and move over to Postman. Ensure POST is the selected verb. Make sure the route is correct note there is no Id passed. With all that set up, click Send and you should get the following response.

Click Send again and you should get the following. We get another Bad Request Http response, with some detail about the validation error.

A quick reminder of our high-level definition is shown in the table. Attribute Description Inputs x2 The Id of the resource to be updated. The other point of note is that this object does not contain the Id attribute. This is really inefficient for large objects. Say you have an object with 20 properties and you only need to change 1, you still have to supply all 20 to the PUT request, ensuring that you provide the correct same value for each of the 19 that are not changing.

If you inadvertently provide the wrong value or omit it altogether for 1 of the 19, you could end up in real strife! Cough, cough; I have never done that. We just so happen to be using it with Entity Framework Core, and we therefore have to provide a specific, concrete implementation for that ORM. This is the payoff. Proceeds are used to help build strength, stability. Habitat for humanity of kent county w Ark Add Experience To Dino.

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