Questions

c# multiple threads writing to the same file

I have a multithreading application which write to the same file on a specific . how can i lock the file and make the thread wait until its free ? i can't use [FileStream](https://msdn.microsoft.com/...

2 Dec at 14:38

Trying to return HTML in an ActionResult results in a HTTP 406 Error

I am trying to return HTML in an `ActionResult`. I have already tried: This displays nothing in the ``. I have tried: Microsoft Edge gives me the following message: > HTTP 406 error This page isn’t sp...

Can't convert CSV to Poco

I'm trying to read a CSV file sent from an upload form and convert it to my Poco. Here is my test file: ``` "30247685204","PWITA1","114000/2017/SE","","27/11/2017","1027/00","","","ZZPWI1","INTER MEM...

2 Dec at 01:16

How to call from one authorized service to another service that requires authorization

I have an Item Service: ``` [Authenticate] public class ItemService : ServiceStack.Service { //implementation } ``` Within the ItemService I am debugging this Get method that has received a val...

2 Dec at 00:53

Default Interface Methods. What is deep meaningful difference now, between abstract class and interface?

I know that an abstract class is a special kind of class that cannot be instantiated. An abstract class is only to be sub-classed (inherited from). In other words, it only allows other classes to inhe...

Enabling Migrations in EF core?

I'm getting started with EF Core 2.0, I have a console application targetting .NET 4.6.1 I have a very simple model class, and this context: ``` public class ContextCore : DbContext { protected ...

18 Jul at 15:25

Does UWP Composition Api support color replacement?

I've been trying to look for an examples which related to Color Replacement, here's an example using the Photoshop which can take, for example, a Blue shade and replace it with a Red shade: [](https...

Why is code behavior different in release & debug mode?

Consider the following code: ``` private static void Main(string[] args) { var ar = new double[] { 100 }; FillTo(ref ar, 5); Console.WriteLine(string.Join(",", ar.Select(...

1 Dec at 17:49

Is ConfigurationManager.AppSettings available in .NET Core 2.0?

I've got a method that reads settings from my config file like this: ``` var value = ConfigurationManager.AppSettings[key]; ``` It compiles fine when targeting .NET Standard 2.0 only. Now I need mult...

Exception : AAPT2 error: check logs for details

``` Task :processDebugResources Failed to execute aapt com.android.ide.common.process.ProcessException: Failed to execute aapt at com.android.builder.core.AndroidBuilder.processResources(AndroidBu...

30 Jul at 08:48

Error message "CS5001 Program does not contain a static 'Main' method suitable for an entry point"

Unable to execute the following code error CS5001 Program does not contain a static 'Main' method suitable for an entry point What does this error message mean? ``` class Program { static asy...

how to use JwtAuthProvider in ServiceStack?

Could you please explain how to use JwtAuthProvider in ServiceStack authentication and consume the service in .net client?

1 Dec at 06:43

C# ASP.NET Core Serilog add class name and method to log

I recently added logging to my ASP.Net Core project. Currently the log writes to a .txt file in this format: > {Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level}] {Message}{NewLine}{Exception} For exa...

addControl to FormGroup dynamically in Angular

How can I add a FormControl to a FormGroup dynamically in Angular? For example, I would like to add a mandatory control which name is "new" and its default value is ''.

Scale down Kubernetes pods

I am using `kubectl scale --replicas=0 -f deployment.yaml` to stop all my running pods. Please let me know if there are better ways to bring down all running pods to Zero keeping configuration, de...

30 Nov at 11:38

OverrideAuthorization attribute in .NETCore

In the controller code below, only users who are in the "Administrator" role can access the `GetData()` action method, because of the controller-level `AuthorizeAttribute`. But I also want users who o...

To allow any element add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. in Angular 4

I created a new project with angular-cli (`ng new my-project-name`) When I run `npm run test` it run without any failures. I added font-awsome module([https://www.npmjs.com/package/angular-font-awes...

30 Nov at 05:55

Why is this loop intentionally not optimized?

[https://github.com/ASP-NET-MVC/aspnetwebstack/blob/master/src/System.Web.Helpers/Crypto.cs#L159](https://github.com/ASP-NET-MVC/aspnetwebstack/blob/master/src/System.Web.Helpers/Crypto.cs#L159) ``` ...

30 Nov at 00:3

Property 'value' does not exist on type 'Readonly<{}>'

I need to create a form that will display something based on the return value of an API. I'm working with the following code: ``` class App extends React.Component { constructor(props) { super(...

16 May at 18:5

How to create a menu in WPF that has Microsoft Web Application styling

We have been tasked with designing an enterprise application in WPF that will replace a battleship grey Winforms application with a modern look and feel. We like the look and feel that Microsoft web a...

5 May at 14:13

Angular 5 Checking the value of a variable on and *ngIf statement

I am using angular 5 and I'm trying to check the value of a variable in the html template of the component. So it looks something like this: ``` <div *ngIf="item='somevalue'"> ``` I'm getting this er...

14 Nov at 20:48

Set ApartmentState for async void main

I have a Windows Forms app. Now I want to use an `async` method. Since C# 7.1 I can use an `async Main` method: [https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-7-1](https://learn.m...

29 Nov at 13:21

The type WebMvcConfigurerAdapter is deprecated

I just migrate to spring mvc version `5.0.1.RELEASE` but suddenly in eclipse STS WebMvcConfigurerAdapter is marked as deprecated ``` public class MvcConfig extends WebMvcConfigurerAdapter { @Overri...

7 Mar at 10:22

WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake

I have a Xamarin app that communicates using WebSocket. On the client side, I am referencing the `ClientWebSocket`. code: ``` using (var client = new ClientWebSocket() { Options = { KeepAliveInterva...

14 Feb at 07:21

When I run `npm install`, it returns with `ERR! code EINTEGRITY` (npm 5.3.0)

I am getting this error while running `sudo npm install`. On my server, npm was installed earlier. I've tried to delete the `package-lock.json` file, and ran `npm cache clean --force`, but it didn't w...

31 Jan at 08:10