ReactJS API Data Fetching CORS error
I've been trying to create a react web app for a few days now for my internship and I've encountered a CORS error. I am using the latest version of reactJS, and placing this in the `create-react-app`,...
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- 2 Jul at 06:33
No executable found matching command "dotnet-aspnet-codegenerator" asp.net core 2.1 project in mac
I am following a tutorial from https://learn.microsoft.com/en-us/aspnet/core/tutorials/razor-pages-mac/model?view=aspnetcore-2.1 on creating an asp.net core 2.1 project in mac. When trying to scaffold...
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- 5 May at 15:49
How do you change the value inside of a textfield flutter?
I have a `TextEditingController` where if a user clicks a button it fills in with information. I can't seem to figure out how to change the text inside of a `Textfield` or `TextFormField`. Is there a ...
.NET Core 2.1 Override Automatic Model Validation
In the latest .NET Core 2.1, an automatic validation for the model state validation is introduced ([https://blogs.msdn.microsoft.com/webdev/2018/02/02/asp-net-core-2-1-roadmap/#mvc](https://blogs.msdn...
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- 1 Jul at 17:39
FirebaseInstanceIdService is deprecated
Hope all of you aware of this class, used to get notification token whenever firebase notification token got refreshed we get the refreshed token from this class, From following method. ``` @Override ...
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- 25 Jul at 12:56
JWT Authentication - UserManager.GetUserAsync returns null
In `AuthController` when authenticating I create a few - `UserID` is one of them. ``` ... Subject = new ClaimsIdentity(new[] { new Claim(ClaimTypes.Name, user.UserName), new Claim("UserID", user...
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- 2 Jul at 18:1
Uncaught SyntaxError: Unexpected end of JSON input at JSON.parse (<anonymous>)
I need some help with this error: > Uncaught SyntaxError: Unexpected end of JSON input at JSON.parse () at Object.success (dashboard.js:22) at fire (jquery-3.3.1.js:3268) at Object.fireWith [as resolv...
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- 31 Aug at 09:50
How to use Swagger in ASP.Net WebAPI 2.0 with token based authentication
I have a ASP.Net WebApi with token based authentication and I want to use swagger to create documentation for this RestApi. The Api has for now only 2 methods, one for requesting a token i.e. `http:/...
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- 15 Apr at 17:25
NSubstitute - mock out parameter behaviour for any parameter
I'm trying to mock `IConfigurationProvider` with NSubstitute. I need the method `bool TryGet(string key, out string value)` to return values for differing keys. So something like this: ``` var config...
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- 30 Jun at 17:44
Is there unpivot or cross apply in ServiceStack ormlite?
I am using ServiceStack 4.5.14. I want to pass a list of Guid to such as below query. Table Name: Image Columns: (Id -> Type=Guid) (ImageId -> Type=Guid) (Guid -> Type=Guid) ``` var result = Db.Execut...
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- 12 Feb at 19:31
How to get Client IP address in ASP.NET Core 2.1
I'm working on ASP.Net Core 2.1 with Angular Template provided by Microsoft Visual Studio 2017. My Client App is working fine. After competition of User Authentication, I want to start User Session Ma...
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- 30 Jun at 18:40
.Net Core Queue Background Tasks
Slender answered my original question about what happens to fire and forget, after the HTTP Response is sent, but Now I'm left with the question how to properly queue background tasks As we all kno...
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- 1 Jul at 04:51
How can I create a Memory<T> from a Span<T>?
I'm trying to overload a parsing method to use a `ReadOnlySpan<char>` parameter in addition to the `string` version. The problem is that the implementation uses a `Dictionary<string, T>` for the parsi...
Unable to start Kestrel. Failed to bind to address address already in use
I want to start a .net core application from an API that I created which is also in .Net Core too. I added `UseUrls()` function to Program.cs file so it will use a port that i want it to use. So here...
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- 2 Jul at 08:20
Regex to keep the last 4 characters of a string of unknown length using C#
I need to use a regular expression to keep the last 4 characters of a string. I don't know the length of the string so I need to start at the end and count backwards. The program is written in c#. Be...
What is the difference between app.UseHsts() and app.UseExceptionHandler()?
On the Startup.cs file of an .NET Core app, by default it make use of ``` public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { ...
Seeding ServiceStack database
In .net core projects I do my seeding inside the Program.cs file like this: ``` var host = BuildWebHost(args); using (var scope = host.Services.CreateScope()) { var services = scope.ServiceProvi...
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- 28 Jun at 17:29
Type definitions should start with a '{', expecting serialized type 'ErrorResponse', got string starting with: MOCK FOR URL NOT FOUND
I'm writing a unit test with and on a microservice. I can get a unit test of a GET route to work with one class, but with a different class it refuses to work. I'm moq'ing the `ServiceStack.JsonH...
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- 5 Nov at 20:55
ServiceStack benchmark continued: why does persisting a simple (complex) to JSON slow down SELECTs?
I would like to switch over to OrmLite, and I need to figure out if it is slow, and if so, why. In my research, I come to the conclusion that complex objects, that in OrmLite are blobbed to JSON, is ...
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- 3 Jun at 09:45
Sending mail using MailKit with Gmail OAuth
I am trying to create an application that will send emails to customers when they make a purchase. We have our own GMail account which I will be using to send the emails from. I have set up my applica...
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- 6 May at 10:37
No such table - EF Core with Sqlite in memory
I'm trying to set up my testing environment, but I have trouble with Sqlite adapter. Each created context has the same connection so, in-memory databse should be built properly for each context. Bu...
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- 28 Jun at 10:37
C# error With ExcelDataReader
Recently I was trying to build an app that can read excel files. But just after I select the excel file I get an error saying this: > 'ExcelDataReader.Exceptions.HeaderException' occurred in ExcelData...
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- 20 Jun at 09:12
Connection pooling in AWS across lambdas
We know lambdas are charged by the execution time. So now I want to connect to SQL Server DB from lambda. If I create a connection in each lambda, it would be heavy for lambda. Is there any best way ...
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- 24 Feb at 16:26
Can I clone an IQueryable to run on a DbSet for another DbContext?
Suppose I have built up, through some conditional logic over many steps, an `IQueryable<T>` instance we'll call `query`. I want to get a count of total records and a page of data, so I want to call `...
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- 28 Jun at 17:18
What should `ReadAsAsync<string>` and `ReadAsStringAsync` be used for?
What should `HttpContentExtensions.ReadAsAsync<string>` and `HttpContent.ReadAsStringAsync` be used for? They would seem to do similiar things but work in curious ways. A couple of tests and their ou...