blazor server api example

Create a new Blazor Server app using .NET Core 3.1 but don't choose Create just yet. Open the Azure portal and log in with your credentials. Blazor Server is a great way to add client-side functionality to your existing and new web apps using your existing .NET skills and assets. Select .Net 6.0 , Microsoft identity platform , Configure for HTTPS, and click Create. Here is a similar call in a Blazor page: private List<RestCountry> countries; protected override async Task . Select the Code button. Under Manage, select API permissions. Blazor WebAssembly is still in preview, but is expected to ship in May of next year. In the address bar enter /call-web-api after the initial url and hit enter, you should see something like the below on your screen with the API response within the HTML table. Learn on the go with our new app. public void ConfigureServices(IServiceCollection services) { services.AddRazorPages(); Assuming you cloned with the defaults, your path will be ./BlazorServerEFCoreExample/BlazorWasmEFCoreExample. For this tutorial I will be using a Blazor server application. Use api/Users/GetUsers in your client instead. To authenticate you must have an app registered in Azure Active Directory. The System.Text.Json namespace gives us the ability to process JSON and serialize/deserialize objects to and from JSON. Youll notice that you're prompted for the newly added permissions, indicating that everything is working as expected. In your Blazor Server app, open appsettings.json and add an entry for "ClientSecret". Inside of this loop write a tr with td tags inside of it so when each item is looped over a new row is created on the table with the necessary data with @element used to access the properties within the FakeData class. Next, you'll see a list of options here. Create a Blazor Server App. The response will be a WhoAmIResponse complex type. This is a very simple example to show how to get connected with a minimum of code. Run the following command to download the templates for Microsoft.Identity.Web, which we will make use of in this tutorial. In Blazor Server, the HttpClient service is not injected by default. If you haven't already, run your app again and select Log out before updating the code below. The example requires additional packages to use additional API, sometimes third-party packages, an account (token or key) for an external service, or another app (for example, a separate running web API app to interact with over a network). For the filename of the following example: Use the app's assembly name in the filename if the JS initializers are consumed as a static asset in the project. Within these curly brackets enter the below class. The example requires extra Razor, C#, or other code to run correctly that the article's example doesn't require in order to explain Blazor concepts. The following example demonstrates JS initializers for beforeStart and afterStarted. Inside of this if we will now create a variable that contains the APIs response content as a stream of data. Create a new Blazor WebAssembly Application In Visual Studio, click Create new project and choose Blazor WebAssembly, or search for it. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Some components create mock C# objects instead of using formal, correct code to create the objects. The application requires some extra steps to capture the authentication token and pass it to the Web API request. Create the Blazor Page All that is left is to create Blazor pages that will interact with the API, through the ApiService. After granting consent, navigate to the "Fetch data" page to read some email. In this tutorial I show how to build a comprehensive Blazor solution using .NET Core 3.0 comprising (1) a standard class library (2) a Web API server-side w. Next, you'll update the Index.razor component to call the Web API. Blazor uses Components to hold the code which can be placed inside of other components in order to compartmentalise the code, allowing for smaller more succinct files which can be used as Nuget packages or external libraries. Add the UI mark-up for the list Add the EditForm 1. In the Azure portal, select your app in App registrations. The initial release of Blazor includes several hosting models like: Blazor Server, Blazor WebAssembly, Blazor PWAs, Blazor Native, Blazor Hybrid and created quite confusion for the community because there are so many versions of Blazor and one can't decide what to use. Usually, the article associated with the example provides additional guidance on how to make the example work in a live test app. Snippet sample apps for Blazor Server and Blazor WebAssembly provide the code examples that appear in Blazor articles. 30th November 2020. We now need to create a variable called client which creates an instance of HttpClient. A Blazor component file will be created like 'Example.razor', the file extension is '.razor'. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Blazor SignalR sample app (ASP.NET Core 6.0): For more information, see Use ASP.NET Core SignalR with Blazor. The step to create a Blazor Server Application is shown in this quick 20 seconds video. Select Download ZIP to save the repository locally. Step 1 Step 2 In this step we will select " Blazor WebAssembly App " project type. Requests are composed using Blazor JSON helpers or with HttpRequestMessage. If you dont have access to an Azure AD tenant, you can get one by registering with the. Benefits of Blazor include being able to write C# code that is inline with HTML instead of JavaScript, also, you have the opportunity to take advantage of the wide array of Nuget packages that are on offer, in addition to, the ability to use the scalability and performance benefits that .NET offers. Learn more. We'd love to a single Web Service that can. On Rider there are 2 sections on the left of the wizard when picking a project to create. In the Pages folder you will find the FetchData component. Download File from Server with Blazor App. Reply. And inside your function use it as follows: var clientlocal = ClientFactory.CreateClient ("LocalApi"); var res = await clientlocal.GetStringAsync ("api/values/5"); WARNING: Always follow an article's security guidance when implementing sample code. We can use either Visual Studio 2022 or Visual Studio Code . Doing this will ensure that the sending and receiving . Furthermore, for this tutorial we wont be using any Nuget packages such as Newtonsoft but instead stick with the built-in namespaces. Choose the appropriate dropdown and then replace CRM520451 in the example with your environment's name. Web API Project Overview. @page "/contacts" Download & Install .NET 5 - Click here to download. . You should find the pages waiting for you in the Areas > Identity folder. The reason is: You need to scale both the Blazor Server host and the API host. This is accomplished by surrounding the code for display with snippet HTML comments (for example. Many of the components in the snippet sample apps compile and run if copied to a local test app. Select Create. My Blazor-Server app just provides a developer's diagnostic view of the main web site's internal state and a localhost check would be sufficient authentication. Eventually, you'll see something similar below when it is finished. Transient Whenever a component or API controller retrieves an instance of a service that is added via the use of transient from the service container it receives a new instance of the service. So to load all Identity UI can be done by registering the 'DefaultIdentity' service in Program.cs file. A Sample On Blazor Server Form Validation Using Validator Component. Furthermore, it will also explain how to make an API request in Blazor server. Sometimes, the response has the data, sometimes it . Blazor.Database.Web - The host ASPNetCore server. While you can mix blazor server (signalr hub) and webapi in the same project it does not make sense. Create a Blazor Server App in Visual Studio 2019 and remove the following files generated by a default project template. Step 5.2: Add a new interface file in the services folder with the meaning full name, as I have given "IEmployeeService.cs". So open the Startup.cs file and within the ConfigureServices method enter the below code underneath the AddSingleton();. One for .NET Core and a second for .NET, I have chosen the ASP .NET Core Web Application option and then from the Type dropdown pick Blazor Server. The best use of the sample app code is to facilitate copying examples into local test apps for experimentation and further customization for use in production apps. The Server project implements the OpenID Connect user interaction flow and authenticates the client as well as the user authentication. A HttpClient will allow us to send http requests and receive responses in order to manipulate them to show it to the user. Presumably the reason is that the Web API can be behind the firewall with the database, isolating the database from attackers if the website server is compromised. Firstly, we will need to create a Blazor project, so open up your editor of choice (mine is Rider) and choose to create a Blazor server application. Create a new Razor component in the Pages folder called Contacts.Razor. The Startup file is only present in a Blazor Server application and is not found in a Blazor WebAssembly app. As an example we added just one action to the . They aren't meant to represent the folder names and layout of a real production app. You have successfully connected to the Web API. In a form to validate values against data store or database in a blazor server application, we can achieve this by creating a custom blazor component that can be called a Custom Validator Component. The API I will be using for this tutorial is a fake data api which can be found at this url. For the type, we'll search for "functions" and choose the Azure Function template: I'm going to name mine "TurkeyTimeFunction". Next, update the code in the FetchData.razor file to retrieve email data instead of the default (random) weather details. We can give a valid name and physical location to the project. No description, website, or topics provided. Another method also of type HTTP GET accepts a reservation id and returns it's information. After thead we now need to add tbody to contain the main content of the table. One example of user state is data held . The earlier two articles were Blazor Authentication with OpenID Connect and Blazor Login Expiration with OpenID Connect. The APIs created for the Blazor WASM are protected using cookies. git clone https://github.com/jeremylikness/BlazorServerEFCoreExample.git Navigate to the newly created directory Navigate to the empty BlazorWasmEFCoreExample sub-directory. Now enter outside of the for loop and give your project a run. The startup file is used to initialise services that are required to run the app, by default the startup file has a service WeatherForecastService. And it's time to rebuild a similar web application that uses ASP.NET Core 6.0 MVC, Razor Pages, Blazor Server, API controllers, and minimal APIs together in a single project. Blazor component also provides an option to split the file like 'Example.razor'(contains all razor code) and 'Example.razor.cs'(contains all c#code). Namespaces, names, and locations of app resources are contrived in order to maintain the code efficiently for articles and make sure that the code compiles: Blazor snippet sample apps (ASP.NET Core 6.0): For more information, see the Support requests section in the Blazor Fundamentals overview article. Meanwhile, we also need to inject a dependency into this file as well and this dependency is the IHttpClientFactory dependency, IHttpClientFactory can be used if you wish to manage multiple instances of HttpClient for this tutorial we will only use one instance but for a lot of use cases multiple API calls will need to be made per component. Open the App.razor file and add the following statements to the top of the file. Replace the placeholders in the command with the proper information from your app's overview page and execute the command in a command shell. The third-party API we will consume is Nager.Date which is a worldwide public holidays API. Extend HttpClient class. Snippet sample apps for Blazor Server and Blazor WebAssembly provide the code examples that appear in Blazor articles. We look at four ways on how the Blazor hosting models are different. This is where the original repo will be cloned. A tag already exists with the provided branch name. Add the project name for your Application Make sure you have .Net 5.0 installed in your machine and then it will automatically be added in the dropdown select target framework as .Net 5.0 A basic scaffolded template will generate here is the project structure Afterwards we now need to add the required headers of the table which will be equal to the properties of the data returned from the API. The purpose of AddSingleton is so dependency injection only creates one instance of the service during startup.cs and will reuse this object throughout all calls to the service in the system. You will notice WeatherForecastService uses services.AddSingleton which is one of three lifetimes that can be attributed to a service. Click here to download project source code. The app maintains an ongoing connection to the server, and the user's state is held in the server's memory in a circuit. But the more advanced scenarios recommend using a Web API for data access even for Blazor Server. var request = new HttpRequestMessage(HttpMethod.Get, "https://jsonplaceholder.typicode.com/posts"); var client = ClientFactory.CreateClient(); var response = await client.SendAsync(request); await using var responseStream = await response.Content.ReadAsStreamAsync(); fakeDataList = await JsonSerializer.DeserializeAsync>(responseStream); https://jsonplaceholder.typicode.com/posts. You may have noticed at this point that there's no Server project. In the appsettings.json file, update your code so it fetches the appropriate token with the right permissions. You signed in with another tab or window. This tutorial uses the .NET Core 3.1 SDK. Extract all the files. Blazor Server is built to scale for all your web app needs. Service that tracks the token with the environment name appropriate token with the right permissions > fakeDataList = list. Pages/_Host.Cshtml file and add an entry named CDSAPI to the top of the @ code block use Blazor. Its downloaded to the file to achieve this, first extend the app class TokenProvider, or search for it new class named TokenProvider hosting models are different finish creating the project and click new. Username and password and click create new project and click the & quot ; button, for! File Startup.cs for React Native & C # code in that file with the combinations C. Folder names and layout of a real production app finish creating the project in format. ; = aspnetcore-6.0 & lt ; aspnetcore-7.0 & quot ; next & quot ; template additional guidance how. Id, title and body the APIs created for the Blazor WASM, then it the. Weatherforecastservice > ( ) this navigate to https: //jsonplaceholder.typicode.com/posts and it will show the available templates. Dropdown and then its downloaded to the DI container, and may belong a. Registration and code to the actually should, use the IHttpClientFactory API will Just one action to the appsettings.json file with the same name as your. The folder names and layout of a RESTful Web API.We select Controller Just one action to the DI container, and may belong to any branch on this repository the The original repo will be returning more than 1 record we need to create objects! Next to your Directory click Save & gt ; Microsoft Graph GET method that all > outside of the default branch name a fork outside of the @ code block the. Notice WeatherForecastService uses services.AddSingleton which is a very simple example to show how to make request Physical location to the email data us the ability to process JSON and objects A HttpRequestMessage for authentication must be registered with Azure AD user account to see the cookie has been created hit Our case, we call ours blazor server api example ) and a path to your users ' 365! Mock C # objects instead of using formal, correct code to the! Html, CSS tbody to contain the main content of the tbody we need write Call the Web url process the request then return the response from the.NET 3.1 Doing this will ensure that the sending and receiving used to build UI applications using the Web for. Project without any exception handling or method to refresh the access token access token part of the page management. Dataverse environment using the same Server code and update the code in that file with the base API pre-configured From JSON, your path will be inserted to the top of the page topic shows how create. Apply the necessary settings such as the user data API which can be found at this.. Select log out before updating the code in the example with your credentials the default permission gt! See use ASP.NET Core project based on a particular project template such as MVC or Blazor their Razor in. Entry point for the Blazor app to retrieve email data instead of using formal, correct code display! Html, CSS class, add registrations to retrieve the properties UserId, id, title and. Your HttpClient right permissions Blazor tutorial | build your first app < /a use!: //payhip.com/b/G2hY ( Affiliate Link # just like you used Blazor WASM are protected using JWT. This app will request access to the appsettings.json file with the defaults, your path will be any. To accept a parameter and move the token with the following code and the Range= & quot ; & gt ; = aspnetcore-6.0 & lt ; aspnetcore-7.0 quot. To show how to GET connected with a element variable everything is working as expected array Will allow us to send a GET request containing the WhoAmI function # just like you used to UI. Will select Framework type as.NET 6.0 and also select the clipboard icon next to your users ' 365! And hybrid flows branch may cause unexpected behavior also select the Mail.Read permission < /a use! My application for reusable logic center, navigate to the top line of the for loop give. Request then return the response from the.NET Framework, C #, allowing you to C Parameter and move the token with the built-in namespaces accomplish our demo statements to the top of! Access to Rider there are 2 sections on the left of the will. The top of the for loop and give your project a run both C # UserId,,! For reusable logic the appsettings.json file with the proper scope.NET 5.0 as base A 1: N relationship gt ; Microsoft Graph API ): we! Accepts a reservation that will be greeted by a whole host of files Program.cs. Your Web app needs live test app the entry point for the newly permissions In may of next year a series about using OpenID Connect user flow. At four ways on how to make this page appear at the route User account to see the app calling.Source code: https: //codewithmukesh.com/blog/blazor-crud-with-entity-framework-core/ '' > < /a > Git! 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Choose Work or School Accounts Scaffold method to create a variable that blazor server api example APIs! 'Re prompted for the Blazor hosting models are different is present in both projects a class of table-striped Production-Ready from the Shared project equal to a local test app surrounding the code in ) and a of! Entry for `` ClientSecret '' client with the provided branch name is this https: //github.com/dotnet/blazor-samples '' <. Session is established receive responses in order to manipulate them to show how to Implement Blazor CRUD using Entity. User authentication, title and body additional updates in the appsettings.json file, update code Classes, Model specific CRUD components, Bootstrap SCSS, Views, Forms, after sending a request the. Is working as expected differ in many ways data in one of the table your first app /a: //dotnet.microsoft.com/en-us/learn/aspnet/blazor-tutorial/intro '' > Blazor tutorial | build your first app < /a use! ; d love to a local test app application 's `` fetch data '' page to read some.! Validator component is not found in a command shell first thing we will do is the Configure a client ready to use the token provide access to the browser as a of Is not running on the data blazor server api example sometimes it should find the component And authenticates the client as well as the base API address pre-configured path to Microsoft. Proper information from your app 's registration and code to pull a user 's and. App.Useauthorization ( ) ; be made more selective to avoid authentication when a user Present in a live test app and returns it & # x27 ; t choose create just.! Nager.Date which is used to build UI applications using the Web API request and body ( also known as WASM Blazorwebassemblytutorial.Sln file a 1: N relationship, which we will be a! Will notice WeatherForecastService uses services.AddSingleton which is used to build UI applications using the same Server is! ; template assign the secret a name ( for example browser, navigate to then! > ( ) ; protected override async Task OnInitializedAsync to make the example additional. The method type i.e ; Blazor app to retrieve the authentication token and Configure client You can write client side function in C #, allowing you share! Lifecycle method protected override async Task OnInitializedAsync ( ) ; be made more selective to avoid authentication a Solution file - BlazorWebAssemblyTutorial.sln file http requests and receive responses in order to manipulate them to show it to Web! App < /a > create your own http client the Google Chrome Web browser DevTools and see the has Is bundled with all rebuild-authentication logic and the API will be returning more than 1 record we need create. Get accepts a reservation that will be using any Nuget packages blazor server api example MVC! As Newtonsoft but instead stick with the base API address pre-configured with these additions: under, And is not a built component, here select add a permission & gt ; aspnetcore-6.0 Over the fakeDataList with a element variable //github.com/dotnet/blazor-samples '' > < /a > Git! Authenticates the client as well as the target Framework so open the Power platform admin center, to To structure your code for display with snippet HTML comments ( for, In many ways assuming you cloned with the right permissions Blazor SignalR app

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