A good way to use services inside of hosted services is to create a scope when needed. This allows to use services / db contexts etc. with the lifetime configuration they are set up with. Not creating a scope could in theory lead to creating singleton DbContexts and improper context reusing (EF Core 2.0 with … Read more
What you want isn’t possible directly but you can use Expressions in C# 3.0: public void ExampleFunction(Expression<Func<string, string>> f) { Console.WriteLine((f.Body as MemberExpression).Member.Name); } ExampleFunction(x => WhatIsMyName); Note that this relies on unspecified behaviour and while it does work in Microsoft’s current C# and VB compilers, and in Mono’s C# compiler, there’s no guarantee that … Read more
The CLSID for the Chakra Javascript engine installed with IE9 is {16d51579-a30b-4c8b-a276-0ff4dc41e755}. The InProcServer32 is %windir%\System32\jscript9.dll . There is no ProgId that I could find. That’s a bit odd; normally paired ProgId and CLSID entries refer to each other. For a given COM object, the ProgId key in the registry has a subkey called CLSID, … Read more
You can have the values in separate lists at the same index and use a simple Zip. var fitResult = new FitResult(); var values1 = new List<int>(); var values2 = new List<int>(); var correls = values1.Zip(values2, (v1, v2) => fitResult.CorrelationCoefficient(v1, v2)); A second way is to write your own custom implementation (mine isn’t optimized for … Read more
From “The Darkside” in his article Parallel Extensions to the .Net Framework we have this parallel extensions version of quicksort: (Edit: Since the link is now dead, interested readers may find an archive of it at the Wayback Machine) private void QuicksortSequential<T>(T[] arr, int left, int right) where T : IComparable<T> { if (right > … Read more
You could P/Invoke ExitWindowsEx: http://www.pinvoke.net/default.aspx/user32/ExitWindowsEx.html Pulling it all together: using System.Runtime.InteropServices; class Class1 { [DllImport(“user32.dll”)] static extern bool ExitWindowsEx(uint uFlags, uint dwReason); [STAThread] static void Main(string[] args) { ExitWindowsEx(ExitWindows.LogOff, ShutdownReason.MajorOther | ShutdownReason.MinorOther); } } [Flags] public enum ExitWindows : uint { // ONE of the following five: LogOff = 0x00, ShutDown = 0x01, Reboot = … Read more
If you are looking for the sort of information that the command line utility, ipconfig, can provide, you should probably be using the System.Net.NetworkInformation namespace. This sample code will enumerate all of the network interfaces and dump the addresses known for each adapter. using System; using System.Net; using System.Net.NetworkInformation; class Program { static void Main(string[] … Read more
The ThreadPool is always there, however, there are a finite number of threads allocated to the pool based on the number of processors. For ASP.NET applications, it is generally a bad idea to use Threads unless you really are starting off an Async process and know that there won’t be a large number of requests … Read more
Here are the commands to encrypt web.config file without any programming… For encryption aspnet_regiis -pef “Section” “Path exluding web.config” For Decryption aspnet_regiis -pdf “Section” “Path exluding web.config” From this commands you can encrypt or decrypt all the section.
This is covered very well in the Shareware Starter Kit. It has code for limited trials, secure activation, registration and Paypal integration. Highly recommended, you don’t want to invent that wheel. The link I gave you is not a great one, you have to click through the license to get to the download. I can’t … Read more