You typically use it when you want to instantiate something the first time its actually used. This delays the cost of creating it till if/when it’s needed instead of always incurring the cost. Usually this is preferable when the object may or may not be used and the cost of constructing it is non-trivial.
You want: foreach (int number in numbers) // <— go back to here ——–+ { // | if (number < 0) // | { // | continue; // Skip the remainder of this iteration. —–+ } // do work } Here’s more about the continue keyword. Update: In response to Brian’s follow-up question in the … Read more
You can trap unhandled exceptions at different levels: AppDomain.CurrentDomain.UnhandledException From all threads in the AppDomain. Dispatcher.UnhandledException From a single specific UI dispatcher thread. Application.Current.DispatcherUnhandledException From the main UI dispatcher thread in your WPF application. TaskScheduler.UnobservedTaskException from within each AppDomain that uses a task scheduler for asynchronous operations. You should consider what level you need to … Read more
Also take a look at ILSpy by SharpDevelop. It’s in early stages of development and they just made a release on the 24th of February. That in itself works pretty good for me. From their website: ILSpy is the open-source .NET assembly browser and decompiler. Development started after Red Gate announced that the free version … Read more
To find the fastest way to read a file line by line you will have to do some benchmarking. I have done some small tests on my computer but you cannot expect that my results apply to your environment. Using StreamReader.ReadLine This is basically your method. For some reason you set the buffer size to … Read more
I have used JetBrains dotTrace and Redgate ANTS extensively. They are fairly similar in features and price. They both offer useful performance profiling and quite basic memory profiling. dotTrace integrates with Resharper, which is really convenient, as you can profile the performance of a unit test with one click from the IDE. However, dotTrace often … Read more
The following snippets will fix the case where there is something wrong with the SSL certificate on the server you are calling. For example, it may be self-signed or the host name between the certificate and the server may not match. This is dangerous if you are calling a server outside of your direct control, … Read more
Why To have a unified type system and allow value types to have a completely different representation of their underlying data from the way that reference types represent their underlying data (e.g., an int is just a bucket of thirty-two bits which is completely different than a reference type). Think of it like this. You … Read more
Yes, you can use Type.InvokeMember(): using System.Reflection; MyObject obj = new MyObject(); obj.GetType().InvokeMember(“Name”, BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty, Type.DefaultBinder, obj, “Value”); This will throw an exception if obj doesn’t have a property called Name, or it can’t be set. Another approach is to get the metadata for the property, and then set it. This will … Read more
A better way is to use the Stopwatch class: using System.Diagnostics; // … Stopwatch sw = new Stopwatch(); sw.Start(); // … sw.Stop(); Console.WriteLine(“Elapsed={0}”,sw.Elapsed);