The service type is defined at compile time. This is normally in the form of an interface or a (sometimes abstract) base class. The key point here is Liskovs substitution principle It states that, in a computer program, if S is a subtype of T, then objects of type T may be replaced with objects of type S (i.e., objects… Read more →
Identify website assigned to w3wp.exe
Open task manager and ensure the PID column is visible on the processes tab Run the following %windir%/system32/inetsrv/appcmd list wp Read more →
Enumerable Debugger
using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Bw.Sipp { public static class EnumerableDebugger { public static IEnumerable<T> Dump<T>(this IEnumerable<T> input) { return Dump( input, item => item != null ? Newtonsoft.Json.JsonConvert.SerializeObject(item) : “(null)”); } public static IEnumerable<T> Dump<T>( this IEnumerable<T> input, Func<T, string> toString) { foreach (var item in input) { Debug.WriteLine(toString(item)); yield return… Read more →
Which w3wp.exe belongs to which Application Pool
%windir%/system32/inetsrv/appcmd list wp Read more →
PresentationFeb2021
I saw a request a while ago asking for advice on some kind diagnostic logging (I can’t recall the details other than the person who asked). Worded another way the question is: how do apply a cross-cutting concern? When we: design our solutions around the ideas of queues, messages, events and streams & services (aka queries & commands) write code… Read more →
Cleaning pesky floor tiles
Step 1 Mop the floor with warm water and a cap full of distilled vinegar. Allow to dry. Step 2 Mix bicarbonate of soda (baking powder will not do) with water. Begin with around the same volume of both in a tub. Brush this paste onto the floor, one tile at a time, using an old paint brush. Each brush… Read more →
Find errors in Azure DevOps build log
search for Error Message Read more →
Exception capture in .NET Core
app.UseExceptionHandler(options => { options.Run( async context => { var error = context.Features.Get<IExceptionHandlerFeature>(); if (error is object) { Log.Error( “EXCEPTION {method} {url} {query} => {exception}”, context.Request.Method, context.Request.Path.Value, context.Request.QueryString.Value, error.Error); } }); }); Read more →
Debug XmlSerializer
var serializer = new XmlSerializer(typeof(<x>)); serializer.UnknownAttribute += (sender, args) => System.Diagnostics.Debug.Fail($”Unknown attribute { args.Attr.Name }=\'{ args.Attr.Value }\'”); serializer.UnknownNode += (sender, args) => System.Diagnostics.Debug.Fail($”Unknown Node: {args.Name}\t{args.Text}”); serializer.UnknownElement += (sender, args) => System.Diagnostics.Debug.Fail($”Unknown Element: { args.Element.Name }\t{ args.Element.InnerXml}”); serializer.UnreferencedObject += (sender, args) => System.Diagnostics.Debug.Fail($”Unreferenced Object: { args.UnreferencedId }\t{ args.UnreferencedObject.ToString() }”); Read more →
3 Little Pigs
The fable of the 3 little pigs was written using what is now known as the the rule of 3. This simple principle has been used countless times and is as effective today as it has ever been. We are not limited to two polar opposites when developing software: quick to write; hard to change or slow to write; easy… Read more →