Blazor Training
Blazor: A free and open-source web framework that enables developers to create web apps using C# and HTML being developed by Microsoft.Training: Instruction to develop new skills.
23 questions
2 answers
Problem with Blazor InputSelect
I've been trying to learn Blazor and I've been working with a movie app tutorial that I got here: https://learn.microsoft.com/en-us/aspnet/core/blazor/tutorials/movie-database-app/?view=aspnetcore-9.0. I've added a lookup table with a "Star…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(67.2, 76%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER%3C/text%3E%3C/svg%3E)
0 answers
Missing file in Learn module
I'm unable to complete the module named "Interact with data in Blazor web apps" because there are one or more files missing in the project files host on GitHub. Where can I find "Services/OrderState.cs" that's referenced in Unit 9 of…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(243.2, 20%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EN%3C/text%3E%3C/svg%3E)
2 answers
How to upload pictrue or image file from directory where client saved
@page "/view-page" <h3>Blank View Page</h3> @for (int i = 0; i < tshirtItems.Count; i++) { <div class="tshirt-section"> <img src="@tshirtItems[i].ImagePath" alt="T-Shirt Image" /> …
asked 2025-03-10T15:20:11.26+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(249.60000000000002, 46%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
MIPAKTEH_1
545
Reputation points
answered 2025-03-12T06:40:45.5833333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(259.20000000000005, 61%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPN%3C/text%3E%3C/svg%3E)
Ping Ni-MSFT
4,895
Reputation points Microsoft External Staff
1 answer
What to do; When load web appear menu "Item" right hand and click menu show picture left area We use Blazor Assembly standAlone.
1.TShirtItem.cs namespace TestBlazorApp.Models { public class TShirtItem { public string Name { get; set; } public string ImagePath { get; set; } } ```} 2.TShirtItem.razor @page "/tshirt-items" @using…
asked 2025-03-10T03:48:11.5+00:00
MIPAKTEH_1
545
Reputation points
answered 2025-03-10T09:15:13.8433333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(70.4, 11%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPM%3C/text%3E%3C/svg%3E)
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
How to fix a cryptographic keys error
I have recently upgraded the my web app to .Net9. I am now getting this error message from a call to CosmosDB to get a specific record... System.Security.Cryptography.CryptographicException: The key {92c2f09a-14ff-4cea-8f15-e09dcec74987} was not found in…
asked 2025-02-22T18:17:25.01+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(233.6, 95%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERS%3C/text%3E%3C/svg%3E)
Raymond Starkey
5
Reputation points
commented 2025-03-06T10:55:27.3266667+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
3 answers
No templates or subcommands found matching: 'blazorserver'
Question Under "Create Blazor components" Section There is a dotnet command for creating a Blazor app by using the blazorserver template in CLI, it doesn't work anymore. The command is below: dotnet new blazorserver -o BlazingPizzaSite -f…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(201.6, 91%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJM%3C/text%3E%3C/svg%3E)
1 answer
Managing Blazor Server Page State
Hi, I want to know about is there any method or technique available through which we can store our significant variables/maintain the page state in sessions under Blazor Server Pages? We are developing a high level blazor server application which needs…
asked 2025-03-04T04:51:04.4266667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 53%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAM%3C/text%3E%3C/svg%3E)
Aima Maqsood
25
Reputation points
answered 2025-03-05T01:37:37.34+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(73.60000000000001, 90%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EZL%3C/text%3E%3C/svg%3E)
Zhi Lv - MSFT
33,161
Reputation points Microsoft External Staff
1 answer
One of the answers was accepted by the question author.
A Network-related or Instance-specific error - TCP Provider - Error with Mac m4
It's like this, I have moved my web app Blazor from Windows computer to Mac Pro m4 previously I have not had problems with being able to access sql server but right now I can't in any way get access to the server at all. This is after I have switched to…
asked 2025-03-01T11:49:05.2366667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(278.4, 68%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJP%3C/text%3E%3C/svg%3E)
Jesper Petersen
45
Reputation points
accepted 2025-03-02T15:03:19.79+00:00
Jesper Petersen
45
Reputation points
1 answer
How to get a certificate in Blazor asp.net
I want to know how to get the free certificate on blazor asp.net. I tried learning from microsoft courses but it only provides badges.
asked 2025-02-24T17:38:17.1166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 41%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERP%3C/text%3E%3C/svg%3E)
Rakhi Pawar
0
Reputation points
edited an answer 2025-02-24T19:01:57.5933333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
Bruce (SqlWork.com)
72,511
Reputation points
1 answer
One of the answers was accepted by the question author.
I have not been able to complete this module
I did everything exactly as this article states and cannot get this code to run correctly. I have troubleshooted with co pilot and git hub. I'm new to programming so I'm sure there is a knowledge gap that I just can't seem to reconcile. I will hold on to…
asked 2025-02-04T08:58:56.98+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(41.6, 87%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
Brandon Shaw
20
Reputation points
commented 2025-02-07T04:03:01.87+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
One of the answers was accepted by the question author.
'Interact with data in Blazor web apps' Training module out of order
Pages 4 & 5 are…
1 answer
One of the answers was accepted by the question author.
need a using directive in the Blazor- use pages,routing etc Exercise:Change navigation
This example should have a @using BlazingPizza.Services before @inject OrderState OrderState otherwise it throws an error on build This question is related to the following Learning Module
asked 2025-01-17T18:57:40.7166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 27%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EEF%3C/text%3E%3C/svg%3E)
Ed Friesema
21
Reputation points
edited the question 2025-01-23T03:39:17.4+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
GetPizzasAsync does not contain a definition
I'm following the tutorial where this is step 4: https://learn.microsoft.com/en-us/training/modules/interact-with-data-blazor-web-apps/4-access-data-from-blazor-components There's a code section that shows this: namespace BlazingPizza.Data; public class…
asked 2024-11-13T21:47:11.3+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(86.4, 24%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBM%3C/text%3E%3C/svg%3E)
Bill Mackin
0
Reputation points
edited a comment 2025-01-20T01:28:07.45+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(240, 2%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EP%3C/text%3E%3C/svg%3E)
Pino
20
Reputation points
1 answer
Getting "An unhandled exception has occurred" message when working on the Blazor app in Use pages, routing, and layouts to improve Blazor navigation module
I have been working on the Blazor app in Use pages, routing, and layouts to improve Blazor navigation module and every time I try to load the browser page, the pizza cards show up for a second and then disappear and I get a message that says "An…
asked 2025-01-09T16:02:52.9566667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(102.4, 36%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMM%3C/text%3E%3C/svg%3E)
Mara McConnell
25
Reputation points
commented 2025-01-15T04:06:38.36+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
One of the answers was accepted by the question author.
Learning blazor, stuck on todo page
I was following the blazor learning path. I was on the 3. level: https://learn.microsoft.com/en-us/training/modules/build-blazor-todo-list/3-exercise-data-binding I created a Todo.razor page according to the instructions but when I run the project and…
asked 2024-12-19T10:03:14.88+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(272, 75%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EME%3C/text%3E%3C/svg%3E)
Murat Şeşen
20
Reputation points
edited a comment 2024-12-20T06:09:19.7866667+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
Blazor Tutorial is "out of date"?
This question has been deleted. This question has been deleted. This question has been deleted.
asked 2024-11-19T16:42:14.25+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 67%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECM%3C/text%3E%3C/svg%3E)
Compton MacKenzie
0
Reputation points
edited a comment 2024-11-22T03:36:02.6366667+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
Dropdown OnChange Event Not Triggering Server Calls After Migrating from Blazor Server to WebAssembly (.NET 6 to .NET 8
I upgraded the application from blazor server .NET 6 to blazor web assembly .NET 8 with that update the blazorise version also and Server application is also upgrade to ASP.NET Core 8 application with API integration is loading proper on all page but ,…
asked 2024-10-30T13:03:46.0866667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(204.8, 88%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBK%3C/text%3E%3C/svg%3E)
Bharti Kushwaha
0
Reputation points
edited a comment 2024-11-13T12:03:22.51+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
2 answers
Can run the CLI
As I entered this cli: dotnet new blazorserver -o BlazingPizzaSite here's the error: No templates or subcommands found matching: 'blazorserver' To list installed templates similar to 'blazorserver', run: dotnet new list blazorserver To search for the…
asked 2024-11-04T08:26:15.49+00:00
Van Ngoc Thang
0
Reputation points
commented 2024-11-07T04:26:18.0666667+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
How to specify training to use Visual Studio instead of command line
I have been going through the Blazor training path and had specified using Visual Studio. Now, it has switched to using command line instead. How can I switch it back to showing the directions using Visual Studio.
asked 2024-08-28T16:37:38.28+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(140.8, 0%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESS%3C/text%3E%3C/svg%3E)
Steven Scearce IV
6
Reputation points
commented 2024-08-30T04:02:42.4033333+00:00
Pradeep M
6,500
Reputation points Microsoft External Staff
1 answer
emoji symbol in the code
Refer to the code, having problem to compile using .Net6 as the trg was based on .Net 6. https://learn.microsoft.com/en-us/training/modules/blazor-build-rich-interactive-components/7-exercise-reuse-components-creating-templates However, the below code…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 34%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBT%3C/text%3E%3C/svg%3E)