JS file gets a net::ERR_ABORTED 404 (Not Found)

I am trying to create a simple Io-web-chat. I recently wanted to seperate my `<script>` inside my html file to an external js file. ``` Chat |-- index.html |-- index.js `-- server.js ``` ``` <...

13 Jan at 21:41

Xamarin.Forms: bind to a code behind property in XAML

In Xamarin.Forms I would like to bind a code behind property to a label in XAML. I found many answers and web pages about this topic, but they all cover more complex scenarios. This is my XAML page:...

14 Jan at 07:36

Module not found: Error: Can't resolve 'crypto'

I am getting the following list of errors when I run `ng serve`. My package JSON is as follows: ``` { "name": "ProName", "version": "0.0.0", "scripts": { "ng": "ng", "start": "ng serve...

12 Jan at 17:47

Entity Framework Core migrations error using UseInMemoryDatabase

I'm trying to separate my Entity Framework and Identity to a different library but I can't do any migrations when I use `builder.UseInMemoryDatabase(connectionString);`. I can do migrations when I ch...

12 Jan at 07:7

Why is service stack returning a Int64 instead of Int32?

My model SecPermission has the column Id = int which is Int32. When I add a new record why is it returning the newly added ID as Int64? Service method ``` public object Post(AddPermission request) ...

11 Jan at 22:28

How to create custom actions in c# and bind it on a wix setup project

How do I create custom actions and link it to my WiX setup project? I have: - WiX 3.11 - Visual Studio

3 May at 05:10

Flutter: Outline input border

I was trying to build a border for my text field like: ``` return TextField( ... border: OutlineInputBorder( borderSide: BorderSide( color: Colors.red, width: 5.0), ) ) ) ``` But...

11 Jan at 09:21

Warning NETSDK1071 A PackageReference to 'Microsoft.AspNetCore.App' specified a Version of `2.1.6`

I have the following warning ``` Severity Code Description Project File Line Suppression State Warning NETSDK1071 A PackageReference to 'Microsoft.AspNetCore.App' specified a Version of ...

11 Jan at 01:56

Cannot find name 'describe'. Do you need to install type definitions for a test runner?

When using TypeScript in conjunction with Jest, my specs would fail with error messages like: ``` test/unit/some.spec.ts:1:1 - error TS2582: Cannot find name 'describe'. Do you need to install type de...

23 Oct at 19:23

Error: Java: invalid target release: 11 - IntelliJ IDEA

I am trying to build an application which was built using java 8, now it's upgraded to java 11. I installed [Java 11](https://www.oracle.com/technetwork/java/javase/downloads/index.html) using [an ora...

31 Oct at 18:36

Web API OData - ODataMediaTypeFormatter MediaTypeResolver no longer exists

Web API OData v7. I'm writing a custom formatter for CSV, Excel, etc. I have a disconnect of how I point my custom formatter (`ODataMediaTypeFormatter`) to my custom classes where I modify the output....

C# How to split a List in two using LINQ

I am trying to split a List into two Lists using LINQ without iterating the 'master' list twice. One List should contain the elements for which the LINQ condition is , and the other should contain all...

10 Jan at 13:28

Why is it not possible to use the is operator to discern between bool and Nullable<bool>?

I came across this and am curious as to why is it not possible to use the `is` operator to discern between `bool` and `Nullable<bool>`? Example; ``` void Main() { bool theBool = false; Nullab...

10 Jan at 14:41

Using Factory Pattern with ASP.NET Core Dependency Injection

I need the ASP.Net Core dependency injection to pass some parameters to the constructor of my GlobalRepository class which implements the ICardPaymentRepository interface. The parameters are for co...

How to fix 'Unchecked runtime.lastError: The message port closed before a response was received' chrome issue?

I'm using VueJS and Laravel for my project. This issue started to show lately and it shows even in the old git branches. This error only shows in the Chrome browser.

Is useState synchronous?

In the past, we've been explicitly warned that calling `setState({myProperty})` is asynchronous, and the value of `this.state.myProperty` is not valid until the callback, or until the next `render()` ...

9 Jan at 23:1

ConcurrentDictionary GetOrAdd async

I want to use something like `GetOrAdd` with a `ConcurrentDictionary` as a cache to a webservice. Is there an async version of this dictionary? `GetOrAdd` will be making a web request using `HttpClie...

Column does not allow DBNull.Value - No KeepNulls - Proper Column Mappings

I am using c# with .NET 4.5.2, pushing to SQL Server 2017 14.0.1000.169 In my database, I have a table with a DateAdded field, of type `DateTimeOffset`. I am attempting to BulkCopy with the followin...

14 Jan at 03:45

ASP.NET Core - Error trying to use HealthChecks

I'm trying to use the .NET Core 2.2 Health Checks. In `ConfigureServices` I registered my class that implements the `Microsoft.Extensions.Diagnostics.HealthChecks.IHealthCheck` interface. But when I...

9 Jan at 13:56

Cannot resolve scoped service DbContextOptions

I been searching around now for a clear cut answer on this issue, including github and still cannot see what I am missing here: Cannot resolve scoped service '' from root provider. In Startup.cs: `...

How to enumerate x^2 + y^2 = z^2 - 1 (with additional constraints)

Lets `N` be a number `(10<=N<=10^5)`. I have to break it into 3 numbers `(x,y,z)` such that it validates the following conditions. ``` 1. x<=y<=z 2. x^2+y^2=z^2-1; 3. x+y+z<=N ``` I have to find ...

Aspnetcore 2.2 Targeting .Net Framework, InProcess fails on azure app service with error TTP Error 500.0 - ANCM In-Process Handler Load Failure

I did upgrade of my app to aspnetcore 2.2 but due to some legacy limitations which I am planing to remove later I must target .NET Framework. New hosting model InProcess bring improvements so I want ...

12 Oct at 00:29

Why doesn't C# allow generic types to be used as attributes inside the generic class?

This isn't a very important question, I'm only curious why it's not allowed. The error message is not helpful in explaining, because obviously 'Att' inherit from Attribute. ``` public class Generic<...

13 Jan at 20:45

Children processes created in ASP.NET Core Process gets killed on exit

I'm spawning a child process in ASP.NET Core (.NET Framework) with `Process` class: ``` var process = new Process { StartInfo = new ProcessStartInfo(executableDir) ...

21 Jan at 11:12

Ef core: Sequence contains no element when doing MaxAsync

I'm using ef core in my asp core API project. I have to find the highest order index. Example: Data table: `Id, ForeignId, OrderIndex` So I'm doing: ``` var highestOrderIndex = await _context ...