How can I improve ServiceStack Server Events Efficiency

I was looking at replacing our periodic polling web page with ServiceStack server events, but in looking at the behavior, the server events mechanism is actually way more overhead than what we were do...

9 May at 22:58

Bot Framework: How to exit Conversation?

so right now I'm using `Microsoft.Bot.Builder.Dialogs.Conversation.SendAsync` and `Microsoft.Bot.Builder.Dialogs.Conversation.ResumeAsync` to implement a way to pause and resume conversation but it se...

9 May at 21:42

Pip "Could not find a version that satisfies the requirement pygame"

When I try to install PyGame with:`pip install pygame` it says > Collecting pygameCould not find a version that satisfies the requirement pygame (from versions: ) No matching distribution found I beli...

13 Nov at 19:5

Nothing happens when I try to send files / folders to Compressed (zipped) folder

For a while now, I've been unable to send files or folders to Zipped folder from windows explorer. The option is there, but when I click on it, nothing happens. It seems others have had similar probl...

3 Aug at 06:11

How do I replace a custom AppSetting class with a MultiAppSetting class in ServiceStack?

We have decided to use the new DynamoDbAppSettings class in our application to take advantage of DynamoDb. We are currently using a custom class that inherits from AppSettings (part of the class show...

9 May at 17:31

How to pass credentials to a SOAP webservice?

I am trying to call a SOAP webservice, however I am getting the error: Additional information: The username is not provided. Specify username in ClientCredentials. So I thought I could just set clien...

9 May at 16:33

Why does a local var reference cause a large performance degradation?

Consider the following simple program: ``` using System; using System.Diagnostics; class Program { private static void Main(string[] args) { const int size = 10000000; var array = ...

9 May at 16:34

Slashes in a query string parameter?

How can I send a file path as a query string parameter? This is my string parameter: > //domain/documents/Pdf/1234.pdf I have tried that: ``` [HttpPost] [Route("documents/print/{filePath*}")] ...

9 May at 15:37

Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xe" for details

This is due to non-existance of "/var/www/html" directory. run mkdir "/var/www/html" , hope it will solved. I have installed a fresh copy of Centos 7. Then I restarted Apache but the Apache failed to ...

1 Nov at 16:6

UWP Check If File Exists

I am currently working on a Windows 10 UWP App. The App needs to Check if a certain PDF File exists called "01-introduction", and if so open it. I already have the code for if the file does not exis...

Hashing an array in c#

How to implement `GetHashCode` for an `Array`. I have an object that overrides `Equals`, checking that: ``` this.array[n] == otherObject.array[n] ``` for all `n` in `array`. Naturally I shoul...

9 May at 15:32

Where does Anaconda Python install on Windows?

I installed Anaconda for Python 2.7 on my Windows machine and wanted to add the Anaconda interpreter to PyDev, but quick googling couldn't find the default place where Anaconda installed, and searchin...

25 Mar at 07:34

Angular 2 setinterval() keep running on other component

I have the following method in one component: ``` ngOnInit() { this.battleInit(); setInterval(() => { this.battleInit(); }, 5000); ...

9 May at 13:6

C# 6 how to format double using interpolated string?

I have used interpolated strings for messages containing `string` variables like `$"{EmployeeName}, {Department}"`. Now I want to use an interpolated string for showing a formatted `double`. Example `...

18 Dec at 03:51

CSS3 100vh not constant in mobile browser

I have a very odd issue... in every browser and mobile version I encountered this behavior: - - - - How can avoid this problem? When I first heard of viewport-height I was excited and I thought I c...

25 Mar at 01:28

Installing from Nuget adds reference to bin directory

I'm installing the `AvsAn` (2.1.0) package using the Nuget Package manager. I am expecting the reference path to be to the packages directory, something like: > C:\app\packages\AvsAn.dll But a refer...

Why do C# struct instance methods calling instance methods on a struct field first check ecx?

Why does the X86 for the following C# method `CallViaStruct` include the `cmp` instruction? ``` struct Struct { public void NoOp() { } } struct StructDisptach { Struct m_struct; [Metho...

9 May at 21:7

Using in memory repo for data protection when running in IIS

I'm running a production server (Windows Server 2012) with an AspNet Mvc Core RC1 website. I'm seeing the following in the logs: > Neither user profile nor HKLM registry available. Using an ephemeral ...

WPF ScrollBar styles

Is it possible to create scrollbars like in this picture? [](https://i.stack.imgur.com/bVL61.png) This picture was taken from this link: [http://codesdirectory.blogspot.be/2013/01/wpf-scrollviewer-co...

8 May at 01:50

Attach StackTrace To Exception Without Throwing in C# / .NET

I have a component which handles errors using return values as opposed to standard exception handling. In addition to the error code, it also returns a stack trace of where the error has occurred. A w...

19 Apr at 11:51

How to compress multiple files in zip file

I'm trying to compress two text files to a zip file. This is how my public method looks like: ``` public ActionResult Index() { byte[] file1 = System.IO.File.ReadAllBytes(@"C:\file1.txt"); b...

7 May at 17:6

How to set asp.net Identity cookies expires time

I use Asp.Net Identity to control my app's authorization. Now, I need to do this: if the user does not operate in 30 minutes, jump to the login page, when he login does not select "isPersistent" check...

2 Apr at 22:25

Fastest way to get last significant bit position in a ulong (C#)?

What is the fastest(or at least very fast) way to get first set(1) bit position from least significant bit (LSB) to the most significant bit (MSB) in a ulong (C#)? For `ulong i = 18;` that would be ...

Cannot see the Image type in System.Drawing namespace in .NET

I'm trying to write a program that sorts images in specific folder by ther dimensions and moves little images to another folder via simple .NET console application. I decided to use System.Drawing.Ima...

6 May at 22:34

C# Double.ToString() performance issue

I have the following method to convert a double array to a `List<string>`: ``` static Dest Test(Source s) { Dest d = new Dest(); if (s.A24 != null) { double[]...

6 May at 20:37