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.NET Aspire Getting Started
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Jun 19, 2025
In this quick talk, we will familiarize ourselves with .NET Aspire and add it to existing projects: an ASP.NET Core API with CRUD operation and an ASP.NET MVC application as a Client. Then we will add the .NET Aspire and check its features. Conference Website: https://dotnetconference.com šŗ CSharp TV - Dev Streaming Destination http://csharp.tv š C# Corner - Community of Software and Data Developers https://www.c-sharpcorner.com #CSharpTV #CSharpCorner #LiveShow #dotNet #DotNetConf2025
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0:00
as you know my name is Coman Uh I'm a software engineer Uh but before that let
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me uh tell you that uh this monitor is
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the Streamyard and this is my laptop which I'm going to present on my laptop
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and visual studio and other stuffs and uh my notes are here So uh if I'm
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looking at this um uh monitor all please excuse me uh
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because I should check the chat and comments So let's get started My name is
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uh Tomron and I'm really happy to be here uh as an speaker for the uh net
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aspire new feature of Microsoft which that's really exciting feature
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So uh in this s uh in this session uh
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I'm going to dive into how to enhance an existing net project by adding uh the
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net aspire So why I'm not going to introduce net aspire or getting started
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by uh net aspire because if you do a little search on the internet YouTube or
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anywhere you will find many resources which all of them are talking about how
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to get started I mean how to create a new project uh in uh with Aspire
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Okay But uh in a real world uh they're not going to start from scratch Uh all
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companies they have their own uh projects right and they are working with
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clean architecture microservices and layer or or even
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simple uh web API MVC blazer or or any
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other uh applications they're not going to delete their projects and stop from
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scratch So the big deal is how can I integrate or
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uh add this new feature net aspire to my
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existing project This is better than starting from scratch
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So uh uh for example for u a sample I I have
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created a project and uh as you can see this is my blog on github.io and this is
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my website which uh most of the time I'm working as a mentor um for uh finding a
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job offer It has uh many steps It's not really easy Uh which
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you can take a look at my website and see uh what we do I'm not alone We have
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we we are a team So but if you want uh technical
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um blog this is my blog and you can see uh my articles also I have a YouTube
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channel which you can uh see my YouTube
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channel uh at this address which I uh
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teach whatever I learn I'm same as everybody else So uh as you can see here
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I have a project a web API project which is
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uh implementing a cro operation for a
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really simple entity called person which has an ID first name and last name It
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doesn't matter You can add more properties more fields to uh entity or
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uh you you can have many other entities It doesn't affect on what we
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are going to do And I have my database context
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here I have the controller which uh implements the uh showing the list of
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people uh showing one person by ID uh
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updating creating delete and other uh operations So and one more thing that
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I'm going to show here here is the connection stream It's my connection
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string And let's see what do we have in the program CS the regular things that
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we usually use in our projects controllers API versioning and uh using swagger and
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registering the database and the other stuffs routing mapping controllers and
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others And the another project that I have is an MVC client project That's an
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MVC which acts as uh client uh and uh
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its responsibility is uh showing or or
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uh interacting with my API project to uh
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make an interface for uh let's say our application So if I
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need to run the application uh I need to
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uh run multiple projects because uh I need to run both projects at the same
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time And then when I press the run button let
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me see where it's going to stop
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Yes Okay great So you can see that I
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have two projects starting One is for my uh API project which is loading
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on 5,01 [Music] uh it's my API project and another one
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is my client application which uh in this case it's an MVC application So
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uh of course you know that uh there are other solutions like using
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docker compose for uh converting my application to docker
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image and running them uh through docker But uh here we now we have something
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like net aspire which it helps to uh manage run uh log
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monitor and many other features to uh make it easy our lives
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So uh in my project I'm using API uh MVC EF
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core as my OM uh but uh we are going to convert this
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project to an Aspire project or let me say uh add Aspire to the current project
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So okay uh we're going to talk about what is
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Aspire and how it helps to developers We are going to add uh net aspire to an
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existing project using visual studio of course and uh we we will see how to use
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pre-built packages in net aspire of course Microsoft provides uh some
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packages but uh they're not complete yet I mean uh we need more
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packages but of course is new and uh we need to wait for other tools to
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integrate with blaspire and we will see how we can use
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uh other tools and technologies that are not integrated with Aspire using uh
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container uh for unsupported tools and then uh I will just mention how to use
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Postgress instead of SQL server I'm using SQL server as a database but at
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the end I will add the uh Postgress uh as a database to uh to see
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how it works So let's see what do we have here Let me stop the
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projects and uh let me show one more thing
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uh from my MBC client Uh of course I have my
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controller which as you can see it represents or returns views for listing
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people for showing the detail of a people creating and update delete and other
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stuffs So and one more thing is service I wrote
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a helper generic HTTP service to communicate with my API
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uh with uh HTTP calls and as you can see I'm using HTTP client factory Here I
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have methods like post async get async
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delete update and send for general
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purpose And if you take a look at my program.cs
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uh I'm configuring the HTTP client here
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uh I named it API and I am setting the base URL Why I'm mentioning these
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details because we're going to uh see some magic stuff or really fantastic uh
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features that Aspire uh gives us As you can see I'm setting the base URL
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from my uh app settings which is local host with port
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5,0001 right so I need to define exact port exact address and if I try to
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change something like the port or the address I need to change everywhere that
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I am using Right So keep in mind this one because we will get back to this and
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the others are the usual books Right
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So now I'm going to decide to add net
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aspire to this existing project uh for this simply I can right click on
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the API project or the other one I start from API project and from the add
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menu select the net aspire orchestrate support when
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I click on this button or on this menu uh a pop-up shows up which This is
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telling that I'm going to add two more projects to your project to your
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solution And let me add this
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in another directory Let's call it [Music]
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Aspire And also to make it
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more [Music] beautiful creating a solution directory
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or folder and put it in here Okay So as you can see this project app host
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project is bold and of course you know that when this is bold it means that my
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entry point or running project is this project
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uh after adding the uh aspire project to
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my project I I I I'm having two more projects One is app host
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and another one is service default App host project acts like an orchestrator
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It means that if you have a database if you have uh an API service if you have a
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client if you have a radius for caching if you have any other services this
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project is responsible for uh
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managing all other services And if you take a look at the program.cs CS of
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appost project That's truly simple It's really simple And you can see that uh by
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using add project extension method I'm adding or it added
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alphabetically to the project my API project
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And you might ask question how it
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uh recognize that I have a project called project underscore
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API It doesn't matter It's uhnet behind the scenes It
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uh recognize your applications your projects that uh the app host is
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referencing to them And currently as you can see I'm just referencing to the API
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project And if I add more
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reference like adding reference to the MVC client
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uh it will recognize it here and let's see just
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for check that currently it's not
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recognizing my MVC client as you can See the here I just have project API the
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project that I uh reference to that one Okay So let's just comment this one and
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reference to MVC client Uh there are multiple ways
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uh one is right clicking on the MVC project and do the same process like
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this add Aspire orchestration support Another one is drag and drop to the uh
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to to the appost project and another one is simply writing
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uh the reference here uh it doesn't matter which way you are doing but I'm
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using uh the menu that
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uh visual studio provides and as you can see it's added to my app host project So
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let's get back to the program.cs project and uncomment
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this and Here you go You can see that MBC client is added to projects list
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Right
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So this is the definition of the projects that
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uh we see here And you can see that the
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uh yeah project pass it's changed Okay no problem So and
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let me call this one
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client and for simplicity let me remove the project from the beginning of that
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Okay So I have two projects One API and another one is the client application
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Okay So uh I can do some more things For example
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for example uh I want to not start the client
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application before starting a E API
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Right for example uh I need to wait I need to wait to run the API project
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Simply I can use wait for and here I
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can give a name like API to this one and
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let's call this
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client by providing or using this extension method I'm telling to my
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application or the data pier that hey wait and do not run the client
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application until the API application is run And also I can do a
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reference to my uh web API project And
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if I need to use another things like the databases the containers or anything
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else simply I can use builder dot add for example
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container which we will see uh next minutes how to use uh
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unsupported tools like or for example your client application is not a net
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application like Blazer or MVC It's a react application So what what should I
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do at that case in that case you can turn your
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uh react application to a docker image and simply use container to run that
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So uh the net aspire is a new feature from
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Microsoft designed to simplify building cloud native distributed applications So
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it's going to uh make us uh make the
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working with cloud um easy Right So it uh and and and
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the good part or important part is that it sits top of the net This is the net
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and the net aspire is going to uh sit on top of the net because it's going to
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wrap up all my application my old application and
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uh and then I can use everything that I was using uh I was using like the
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database the API service the postgress uh caching mechanism
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or messaging system or anything that I was using
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[Music] uh and also as I mentioned uh at the
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beginning it provides some uh packages some uh built-in packages like uh
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postress like radies like EF core but still it needs to be
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uh create more packages because still we have uh some tools and technologies that
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are not supported by uh net aspire and we need to run them with
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containers Okay uh the as the net aspire pillars are uh I mean the important
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parts of a net aspire project is uh the orchestration uh net aspire it manage
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multiple services containers and resources in the development uh
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environment and not just development environment it's uh
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uh personally in our company we are using Aspire in our production
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too Another one is service integrations It offers pre-builtin packages for
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connecting to database to using cache system and cloud
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services For example if you are using Azure monitor you can simply by writing
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two or three lines of code uh you can connect to Azure monitor service to
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monitoring your uh old services Another one is
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observability Uh the dot despire bu bu bu bu bu bu bu bu bu bu bu bu bu bu bu bu bu bu bu bu built-in supports for
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logging tracing and metrics to monitor your app's uh
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health by providing your uh health check
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URL and uh providing the logging system and monitoring system and also it has
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some metrics So
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uh imagine we're working on a project with an API a front end and a database
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Normally we spend time configuring each pieces like connection strings ports
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health checks and other stuffs that Aspire automates this
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Remember I showed that I'm using this URL right i
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showed that I am using this connection string
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right but by using spire all of these are going to be automated I mean I'm
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going to configure to be configured automated So this is really nice It's
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like having a development time system that sets up your
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environment and enforces best practices because I'm not going to write code It
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is implementing all uh codes configurations and other stuffs by
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itself And of course it's using the best practice and led uh it it led me to
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focus on coding not not configuring radius not configuring
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rabbit and cube configuring the postress and other uh tools that I'm
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using for our API and MVC project that you can see it can simply uh simplify
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service discovery It means that uh if you pay attention I didn't do anything I
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just added my project or reference my project to app that's enough and this is
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acting like a service discovery I don't need to use any other package or other
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tools as a service discovery by writing these lines of code It's
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done It's [Music] on And of course it's uh it enhance
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debugging and prepare us for cloud deployment
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uh because uh if you remember I when I ran the
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project uh I had two terminals which I could see the logs of
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my both applications separated in two terminals right but uh and and imagine
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if you have for example 10 API services and two other services one database
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another one for uh radius another one for postgress and other stuffs right
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so how many terminals or logging
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uh output you should check for checking the logs but in netaspire I'm going to have
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uh very simple uh or one place to see
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the logs of all u services So
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uh yeah that's it Uh okay so uh I talked
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about the app host and uh let's see what is service default service fault is
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shared configurations for logging um and telery and uh the other stuffs
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that uh is shared between all applications as you can see I have a uh
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add service defaults here which is uh configuring my services like the service
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discovery like the uh health check like the open telemetry and the others Okay
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So and uh because I'm out of time I'm going to make it
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faster So uh yes this is for health
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check And this one is for live and health URL And for monitoring if you're
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using uh Azure monitor you can simply use this
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one And okay great So
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uh just let me add one or two more things and I will
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uh uh finish my presentation Okay
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uh if you are using uh you know we are not using uhn net all the time we might
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use other services like radius like react like posters like other services
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that are not uh the netbased
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uh tools so what should I do uh for
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those situations uh we can use uh as I mentioned the
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the dot add container and uh use the container right
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so uh or if I'm going to use the radius
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which is supported currently supported by uh Microsoft I can simply just add
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[Music] uh Aspire
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package It's nothing but just uh it's filtering uh the Aspire uh packages
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which you can see that I have the radies I have the Postgress and the other
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stuffs If you want to use this it's really simple You can just you need just
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add the Postgress Let me change the version because I'm using the version
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9 And here we go Builder add Postgress
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See that's simple And also I can add the
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database for example people and of course because I'm using
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SQL server I need to change some configurations in my API project instead
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of using SQL server I need to use Postgress but I'm not going to uh go
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through into this because I'm out of time
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And yeah I think that's it Oh okay So
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for the last part let's run the application to see what
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happens when we
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use net aspire or we add to the project
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previous Okay finally
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Great So this is the dashboard of the net aspire It doesn't matter how many
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services you have Uh you have uh 10 API
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services You have two databases or more You have three clients One in uh React
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one is Blazer one is MVC It doesn't matter All of them are here We list here
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and there is a console tab here which you can see the lots of your uh services
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here and the other ones like the structure the
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uh traces the metrics and I'm not going through this um you can uh do a research
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about And but just for make sure everything works fine which is not going
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to work fine because I didn't change the address Oh it's working But uh it's
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because uh it works with both of them Uh as I
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mentioned in here I don't need to specify the port and the address
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Uh I just need to use the name of my
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service That's enough That's enough And it will uh find out that uh what is my
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service this is the service discovery This is the great feature that
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uh net aspire provides And I'm going to rerun the project to make sure
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everything works [Music]
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fine I just hate to bug you because we're running out of I know
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we started a little late but I just hate to bug you I know you hate me already
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Yeah of course Yeah Yeah Perfect Right So I think that that was very