How to get a list of all folders in an container in Blob Storage?

I am using Azure Blob Storage to store some of my files away. I have them categorized in different folders. So far I can get a list of all blobs in the container using this: ``` public async Task<L...

Could not load type 'ServiceStack.Redis.RedisSentinel' from assembly 'ServiceStack.Redis, Version=3.9.48.0, Culture=neutral, PublicKeyToken=null

Currently in my application I am trying to implement application caching for which I have used RedisSentinel. We have a common assembly which is having all code and configurations implemented for Red...

Lost parameter value during SQL trace in EF Core

I have implemented an approach for tracing SQL queries from EF Core according to this article: [https://learn.microsoft.com/en-us/ef/core/miscellaneous/logging](https://learn.microsoft.com/en-us/ef/co...

Why are three properties in DbParameterCollection abstract in reference assemblies but virtual otherwise?

I'm moving a project from `project.json` to the new-style csproj format, and it includes a class derived from [DbParameterCollection](https://learn.microsoft.com/en-us/dotnet/api/system.data.common.db...

How to Bulk Update records in Entity Framework?

I am trying to bulk update records using Entity Framework. I have tried Entity Framework.Extensions `Update` method. The `Update` method is able to bulk update for a set of records with same set of u...

Correct way to check value tuples for equality in C#?

Given two variables of type `(int, int)`, how do I check if they represent equal values? For example: But fails with: > Error CS0019 Operator '==' cannot be applied to operands of type '(int, int)' an...

6 May at 18:49

How to find MySQL process list and to kill those processes?

The MySQL database hangs, due to some queries. How can I find the processes and kill them?

13 May at 12:12

Null(In C#) Vs Nothing(in vb.net)

How is C# NULL different from vb.net Nothing? ``` Console.WriteLine(Nothing = "") => True ``` vs ``` Console.WriteLine(null==""); => False ``` My understanding was that both `null` and `Nothing`...

15 Dec at 01:33

Kotlin - How to correctly concatenate a String

A very basic question, what is the right way to concatenate a String in Kotlin? In Java you would use the `concat()` method, e.g. ``` String a = "Hello "; String b = a.concat("World"); // b = Hello ...

26 May at 06:7

UICollectionView, full width cells, allow autolayout dynamic height?

For 2021! See @Ely answer regarding `UICollectionLayoutListConfiguration` !!!! --- In a vertical `UICollectionView` , Is it possible to have , but, allow the to be controlled by ? This strikes m...

3 Jun at 12:30

NullReferenceException in System.Web calling ServiceStack service with GetAsync from async ServiceStack service

I have a ServiceStack service that uses async from top to bottom. Below is a simplified example with all layers collapsed down to the Service Definition. ``` public async Task<ReadItemResponse> Get(...

How to create GridView Layout in Flutter

I am trying to layout a 4x4 grid of tiles in flutter. I managed to do it with columns and rows. But now I found the `GridView` component. Could anyone provide an example on how to do it using it? I c...

24 Jan at 03:28

Asp.Net Core API disable startup complete message

As part of my application I have a .Net Core API project. Unlike most cases where this project would run as its own process, I have the API run in a thread, among others, in a single process. Also for...

Dependency injection in ASP.NET Core 2 throws exception

I receive following exception when I try to use custom DbContext in `Configure` method in `Startup.cs` file. I use ASP.NET Core in version 2.0.0-preview1-005977 > Unhandled Exception: System.Exceptio...

Optionally redirect all requests in ServiceStack

I have a requirement where one self-hosted instance X optionally handles a request by redirecting it to another self-hosted instance Y on a different machine. Instance X is authenticated against insta...

25 May at 12:34

How do I Set Background image in Flutter?

I am trying to set a background image for the home page. I am getting the image place from start of the screen and filling the width but not the height. Am I missing something in my code? Are there im...

19 Jun at 11:26

ASP.NET Core JWT Bearer Token Custom Validation

After a lot of reading, I have found a way to implement a custom JWT bearer token validator as below. `Starup.cs`: ``` public void Configure(IApplicationBuilder app, IHostingEnvironment env, ...

dotnet pack project references

I quite like separating functionality across a few assemblies, for example a facade to a data provider, contracts for the data provider and the data provider implementation itself... to my mind, it ma...

Copying From and To Clipboard loses image transparency

I've been trying to copy a transparent PNG image to clipboard and to paste it into a specific program that supports it. I tried many solutions already but the background always ended up gray in one ...

27 Mar at 08:33

RestClientException: Could not extract response. no suitable HttpMessageConverter found

Using the curl command: ``` curl -u 591bf65f50057469f10b5fd9:0cf17f9b03d056ds0e11e48497e506a2 https://backend.tdk.com/api/devicetypes/59147fd79e93s12e61499ffe/messages ``` I am getting a JSON respo...

How to use 'refresh_token' in IdentityServer 4?

I'm using .net core with IdentityServer 4. I have a Web api, and an MVC app which accesses secure endpoints on the api. It's very similar in setup to the IdentityServer quickstart: [https://github.c...

25 May at 07:47

Spark dataframe: collect () vs select ()

Calling `collect()` on an RDD will return the entire dataset to the driver which can cause out of memory and we should avoid that. Will `collect()` behave the same way if called on a dataframe? What ...

Operator '?' cannot be applied to operand of type 'T' (2)

I came across a weird behavior of C# compiler (VS 2015). In the code bellow, compiler is happy with Value2, but complains about Value1: Operator '?' cannot be applied to operand of type 'T' Why? ```...

25 May at 11:29

Dependency Injection - How to resolve a dependency based on the value and not type?

I have one interface and two classes (implemented from that interface) in my application as below: ``` public interface ISMSServiceProvider { NotificationSentResponse Send(SMSMessage sms); } pub...

Home does not contain an export named Home

I was working with `create-react-app` and came across this issue where I get an error: > Home does not contain an export named Home. Here's how I set up my `App.js` file: ``` import React, { Component...