ContosoUniversity | Contoso University sample re-done the way I would build | Learning library
kandi X-RAY | ContosoUniversity Summary
kandi X-RAY | ContosoUniversity Summary
Contoso University sample re-done the way I would build it.
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QUESTION
Delete.cshtml.cs
...ANSWER
Answered 2021-May-07 at 03:25According to your code and description, it looks that in the Album.cshtml
page, you will list the albums, and if click the "delete" hyperlink, it will redirect to the Delete.cshtml
page and show the selected album, after that, click the "Delete" button to delete the item and redirect to the Index page. If that is the case, please refer the following steps to modify your code.
First, in the Album.cshtml
page:
Since the Delete.cshtml
page located in the "Albums" folder, when you add the hyperlink ( tag), the
asp-page
attribute should like this: asp-page="/Albums/Delete"
.
Second, in the Delete.cshtml.cs
file:
If you check the Album.cshtml.cs file or use F12 developer tool to check the parameter, you can see the id is a string value, instead of int type. So, change the code as below:
QUESTION
I have entries in MySQL Database but i am not able to implement jquery datatable plugin on database for showing that table in browser as jquery plugin datatable (server side processing). How can i implement it ?
Here are files and folders.
Models
- Course.cs
ANSWER
Answered 2021-Jan-18 at 07:53Here is a demo to show Courses with DataTable: Controller(I use fake data to test):
QUESTION
Can someone explain the meaning of these two terms to me: "_context" and "context"?
Coming from Basic, Pascal, and ASPX (VB) to C# and Razor pages, I constantly misunderstand the recent .Net terminology. I believe that the only essential context (that's referred to as such) in my database application is the context - that is, a class deriving from DbContext that handles database connections. However, this always seems to be handled in an oblique way. I see examples in tutorials like:
...ANSWER
Answered 2020-Apr-29 at 14:40The constructor gets an instance of ContosoUniversity.Data.SchoolContext (injected, for example) and then you set it to a field called _context. Both variables are referencing the same object. If you didn't want to have two different names, you would use "this" like this:
QUESTION
I'm creating a very simple test project to experiment with various Azure DevOps CI/DI features. This project contains a solution with an ASP.NET Core website project, and an xUnit unit tests project. The unit tests runs correctly on my local machine (tested with the visual studio runner and with dotnet test
, but I cannot make it work with an Azure build.
The output of the unit tests step in Azure is the following :
...ANSWER
Answered 2019-Apr-03 at 07:19The problem was that the default file pattern to look for test assemblies (*test*.dll
) also did include xUnit's core assemblies (named xunit.runner.visualstudio.dotnetcore.testadapter.dll
), which confused the test system.
All I had to do to fix the issue is use a more specific pattern (like *tests.dll
), or exclude all test adapter assemblies (!**/*testadapter.dll
).
Update : The official xUnit documentation has been updated to help avoid this problem (https://xunit.net/docs/getting-test-results-in-azure-devops)
QUESTION
Hello playing around with asp.net core MVC but got stuck and need some help. I'm trying to get my index for courses to show the last name of the instructor but can't figure out how to access the information in the third table. I manage to get the InstructerID from the Departmenttable
...ANSWER
Answered 2020-Mar-22 at 20:06It's a graph of data, so it would be:
QUESTION
ANSWER
Answered 2017-Dec-12 at 18:09If this happens, the solution to the error is to run the command at the dos command prompt in the project folder directory instead of in Package manager console. Then you can scaffold your pages without the error until MS fixes this bug.
Proof:
QUESTION
I try to do Razor ContosoUniversity (renamed in ContsoObserve initally) for Visual Studio 2017 and get error my .csproj is
...ANSWER
Answered 2018-Jan-04 at 15:27Change your package reference to Microsoft.AspNetCore.All
(currently verrsion 2.0.3). That will include Entity Framework (plus more than you will need).
Also, don't use Update
on the PackageReference
element, use Include
.
QUESTION
In my solution, I have two projects. One of them is web
project and the other one is Model
project. You can see my solution structure in below:
Now when I run application I get the following error:
InvalidOperationException: Cannot find compilation library location for package 'ContosoUniversity.Model'
And here is full stack trace :
...ANSWER
Answered 2017-Sep-19 at 09:18For resolve this problem you should inject IServiceProvider in Startup constructor like this:
QUESTION
When I run my asp.net core 2 projects I get the following error message:
InvalidOperationException: Unable to resolve service for type 'Microsoft.EntityFrameworkCore.DbContext' while attempting to activate 'ContosoUniversity.Service.Class.StudentService'.
Here is my project structure:
...ANSWER
Answered 2017-Sep-20 at 11:06StudentService
expects DbContext
but the container does not know how to resolve it based on your current startup.
You would need to either explicitly add the context to the service collection
Startup
QUESTION
How can I create a handler that takes in a class as an arg. This is based of the mediatr example for Razor pages. In the example, the 'Query' object has only an 'Id' property. I want to have 2 properties, for example:
...ANSWER
Answered 2018-Oct-27 at 18:25Link is pointing to wrong handler, You have OnGetEditAsync where Edit is name of handler; try this:
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