AspNetCore.Docs | Documentation for ASP.NET Core | Model View Controller library

 by   dotnet C# Version: 220491 License: CC-BY-4.0

kandi X-RAY | AspNetCore.Docs Summary

kandi X-RAY | AspNetCore.Docs Summary

AspNetCore.Docs is a C# library typically used in Architecture, Model View Controller applications. AspNetCore.Docs has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Documentation for ASP.NET Core

            kandi-support Support

              AspNetCore.Docs has a medium active ecosystem.
              It has 11707 star(s) with 25558 fork(s). There are 710 watchers for this library.
              It had no major release in the last 12 months.
              There are 396 open issues and 13132 have been closed. On average issues are closed in 86 days. There are 4 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of AspNetCore.Docs is 220491

            kandi-Quality Quality

              AspNetCore.Docs has 0 bugs and 0 code smells.

            kandi-Security Security

              AspNetCore.Docs has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              AspNetCore.Docs code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              AspNetCore.Docs is licensed under the CC-BY-4.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              AspNetCore.Docs releases are available to install and integrate.
              AspNetCore.Docs saves you 2839059 person hours of effort in developing the same functionality from scratch.
              It has 1103569 lines of code, 1 functions and 7632 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            AspNetCore.Docs Key Features

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            AspNetCore.Docs Examples and Code Snippets

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            Community Discussions


            ModelState.IsValid includes a navigation property. Always false. (only net-6.0) How to get true?
            Asked 2022-Feb-03 at 13:22

            This is an example on dotnet. I work it on version net-6.0

            The result of the validation check is false because the navigational properties of the class participate in the validation. I implemented a simple experiment on net-5.0 - navigational properties are not reflected in the result. But, maybe I'm wrong.

            How to solve this problem correctly?



            Answered 2022-Feb-03 at 09:28

            Not sure this answers your question or not. But would suggest you create a Data Transfer Object (DTO) class rather than directly use the (generated) Database object class.

            The DTO class is designed based on what value (schema) API is expected to receive. And this DTO class would also be used for doing the first-level data validation such as Required, Range and etc. (without involving validation against database)



            How to seed users, roles when I have TWO DbContext, a) IdentityDbContext & b) AppDbContext
            Asked 2022-Jan-18 at 06:06

            normally I would put the code for seeding users in the OnModelCreating() Its not an issue with one DbContext.

            Recently it was recommended to separate identity's DbContext from the App's DbContext, which has added two DbContexts and some confusion.
            1. public UseManagementDbContext(DbContextOptions options) : base(options) // security/users separation
            2. public AppDbContext(DbContextOptions options) : base(options)

            But when you have two separate DbContexts, How do I seed the user / role data?

            1. IdentityDbContext -- this has all the context for seeding

            2. AppDbContext -- this does NOT have context, but my Migrations use this context.

            Can you please help how to seed the user and role data, and is part of the migrations or startup etc.

            Update: using core 6 sample, @Zhi Lv - how do I retrofit into program.cs my seedData when the app is fired up

            My Program.cs was from created originally from the ASP Core 3.1 template, it looks like this, what should I refactor, (oddly in the link at MS, there are no class name brackets, so where does my seed get setup and invoked from?



            Answered 2022-Jan-18 at 06:06

            To seed the user and role data, you can create a static class, like this:



            Authorize with roles is not working in .NET 5.0 Blazor Client app
            Asked 2022-Jan-04 at 10:45

            I have a .NET 5.0 Blazor client app and I am unable to get the [Authorize(Roles="Admin")] and AuthorizeView tag to work.

            I have scaffolded identity pages as well:

            I am using a custom identity implementation that uses Cosmos Db:

            I know that Authorization with roles in the Blazor client project template is an issue:

            I tried workarounds as mentioned in the above Github issue thread and the following SO answer:

            ...still, I am unable to get it to work.

            Ironically, the IsInRoleAsync method is not even called after logging in to the application. I have applied a breakpoint on its implementation in the custom CosmosUserStore class and it doesn't get hit.

            The browser console shows this after logging in to the application with the admin user:




            Answered 2022-Jan-03 at 13:28

            Paste this into your Index page so you can see the information for your user:



            ASP.NET Core web application - How to upload large files
            Asked 2021-Nov-25 at 15:53


            I'm trying to create an ASP.NET Core (3.1) web application that accepts file uploads and then breaks it into chunks to send to Sharepoint via MS Graph API. There are a few other posts here that address the similar questions but they assume a certain level of .NET knowledge that I don't have just yet. So I'm hoping someone can help me cobble something together.

            Configure Web server & app to Accept Large Files

            I have done the following to allow IIS Express to upload up to 2GB files:

            a) created a web.config file with the following code:



            Answered 2021-Nov-25 at 11:33

            I've implemented a similar large file controller but using mongoDB GridFS.

            In any case, streaming is the way to go for large files because it is fast and lightweight. And yes, the best option is to save the files on your server storage before you send. One suggestion is, add some validations to allow specefic extensions and restrict execution permissions.

            Back to your questions:

            The entire file is read into an IFormFile, which is a C# representation of the file used to process or save the file.

            The resources (disk, memory) used by file uploads depend on the number and size of concurrent file uploads. If an app attempts to buffer too many uploads, the site crashes when it runs out of memory or disk space. If the size or frequency of file uploads is exhausting app resources, use streaming.

            source 1

            The CopyToAsync method enables you to perform resource-intensive I/O operations without blocking the main thread.

            source 2

            Here you have examples.

            Example 1:



            Localize the title in data annotation error message in ASP.NET Core 5
            Asked 2021-Nov-07 at 21:18

            I followed this official documentation for providing translation to data annotation constraints.

            Everything works fine, except a title in the response that is not translated. You can see this title marked in the following picture. (i.e. One or more validation errors occurred.)

            This title somehow is added automatically by .Net Core.

            I don't know where is it or even if it is possible to localize it or not. You can see the error message related to the password is in German in the picture but title is not.

            You can find the sample code here.

            FYI: I even put an entry in my SharedResource.resx with the name One or more validation errors occurred., however, didn't work.



            Answered 2021-Nov-07 at 21:18


            How are we meant to use IUserClaimsPrincipalFactory?
            Asked 2021-Nov-05 at 09:56

            I'm confused by the example in the documentation here that describes how to add claims using IUserClaimsPrincipalFactory.

            The sample code shows how to extend the ApplicationUser class:



            Answered 2021-Nov-05 at 09:56

            It's not stated, but I think the implication is that something else (not shown) will set the IsAdmin property for a user in the database.

            You can set the IsAdmin where you want,For example you can set it when register.Here is a demo:

            Input Model in register:



            Testing a Multipart file upload Azure Function
            Asked 2021-May-16 at 09:00

            So I have written a simple Azure Function (AF) that accepts (via Http Post method) an IFormCollection, loops through the file collection, pushes each file into an Azure Blob storage container and returns the url to each file.

            The function itself works perfectly when I do a single file or multiple file post through Postman using the 'multipart/form-data' header. However when I try to post a file through an xUnit test, I get the following error:

            System.IO.InvalidDataException : Multipart body length limit 16384 exceeded.

            I have searched high and low for a solution, tried different things, namely;

            • Replicating the request object to be as close as possible to Postmans request.
            • Playing around with the 'boundary' in the header.
            • Setting 'RequestFormLimits' on the function.

            None of these have helped so far.

            The details are the project are as follows:

            Azure Function v3: targeting .netcoreapp3.1




            Answered 2021-May-16 at 09:00

            It took me a 50km bike ride and a good nights sleep but I finally figured this one out :-).

            The Azure function (AF) accepts an HttpRequest object as a parameter with the name of 'req' i.e.

            public async Task Run( [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = "images")] HttpRequest req)

            The hierarchy of the files object in the HttpRequest object (along with the parameter names) is as follows:

            • HttpRequest -> req
              • FormCollection -> Form
                • FormFileCollection -> Files

            This is what the AF accepts and one would access the files collection by using req.Form.Files

            In my test case, instead of posting a FormCollection object, I was trying to post a Stream of a file to the Azure Function.



            What does AddEntityFrameworkStores exactly do in AddIdentity?
            Asked 2021-May-09 at 20:32

            I recently needed to Generate Email Confirmation Token for my .net core 5 app, and while researching I found out I need to register "AddIdentity" at startup.



            Answered 2021-May-09 at 20:27

            Here's the source code.

            Basically it adds default Stores: UserStore and RoleStore. If you don't use it you have to provide Stores yourself with AddUserStore and AddRoleStore.



            In ASP.NET Core, where do you configure redirect to login?
            Asked 2021-Apr-08 at 20:28

            I'm working through the example provided here:

            And I'm trying to implement something similar in my own app. Much of what the sample app does works, as replicated in my app, but there is one critical functionality that does not.

            In this sample app, there is a "Contact (Authentication Required)" link, that when clicked loads the "/Contact" page - if the user is logged in.

            If the user is not logged in, the "Contact (Authentication Required)" link still has its href= set to "/Contact", but when you click on it you end up in the "/Account/Login" controller, with ReturnUrl set to "/Contact".

            The "Home" link directs to Index.cshtml, and does not redirect to /Account/Login " if the user is not logged in.

            Which is all pretty ordinary, except ... I cannot find where the redirect to /Account/Login is configured, and I cannot determine why we're redirecting on one page but not the other.

            What is it that causes Contact to redirect to Login and Home to not, and where do I configure that it's Account/Login that I want to redirect to?

            Rakib's comment pointed me to a YouTube video, and an earlier video in the same series gave me a hint on one of my problems.

            The sample app, in ConfigureServices(), has:



            Answered 2021-Apr-08 at 20:28
            Part 1

            What is it that causes Contact to redirect to Login and Home to not?

            • If the page or controller is configured to allow anonymous it will not redirect to login



            Implementing jquery plugin datatable in core mvc in Visual Studio Code
            Asked 2021-Jan-18 at 07:53

            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.


            1. Course.cs


            Answered 2021-Jan-18 at 07:53

            Here is a demo to show Courses with DataTable: Controller(I use fake data to test):


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