You can use Enumerable.SequenceEqual method. using System; using System.Linq; … var a1 = new int[] { 1, 2, 3}; var a2 = new int[] { 1, 2, 3}; var a3 = new int[] { 1, 2, 4}; var x = a1.SequenceEqual(a2); // true var y = a1.SequenceEqual(a3); // false If you can’t use .NET 3.5 … Read more
This article offers a fairly comprehensive explanation: “Comparing the Timer Classes in the .NET Framework Class Library” – also available as a .chm file The specific difference appears to be that System.Timers.Timer is geared towards multithreaded applications and is therefore thread-safe via its SynchronizationObject property, whereas System.Threading.Timer is ironically not thread-safe out-of-the-box. I don’t believe … Read more
The lock statement is translated by C# 3.0 to the following: var temp = obj; Monitor.Enter(temp); try { // body } finally { Monitor.Exit(temp); } In C# 4.0 this has changed and it is now generated as follows: bool lockWasTaken = false; var temp = obj; try { Monitor.Enter(temp, ref lockWasTaken); // body } finally … Read more
Since I wrote the MSDN article you are referring to, I guess I have to answer this one. First, I anticipated this question and that’s why I wrote a blog post that shows a more or less real use case for ExpandoObject: Dynamic in C# 4.0: Introducing the ExpandoObject. Shortly, ExpandoObject can help you create … Read more
AppDomain.CurrentDomain.BaseDirectory is probably the most useful for accessing files whose location is relative to the application install directory. In an ASP.NET application, this will be the application root directory, not the bin subfolder – which is probably what you usually want. In a client application, it will be the directory containing the main executable. In … Read more
If you want to bind to another property on the object: {Binding Path=PathToProperty, RelativeSource={RelativeSource Self}} If you want to get a property on an ancestor: {Binding Path=PathToProperty, RelativeSource={RelativeSource AncestorType={x:Type typeOfAncestor}}} If you want to get a property on the templated parent (so you can do 2 way bindings in a ControlTemplate) {Binding Path=PathToProperty, RelativeSource={RelativeSource TemplatedParent}} … Read more
There really is only one name in XAML, the x:Name. A framework, such as WPF, can optionally map one of its properties to XAML’s x:Name by using the RuntimeNamePropertyAttribute on the class that designates one of the classes properties as mapping to the x:Name attribute of XAML. The reason this was done was to allow … Read more
Stopwatch is designed for this purpose and is one of the best ways to measure time execution in .NET. var watch = System.Diagnostics.Stopwatch.StartNew(); // the code that you want to measure comes here watch.Stop(); var elapsedMs = watch.ElapsedMilliseconds; Do not use DateTime to measure time execution in .NET. UPDATE: As pointed out by @series0ne in … Read more
InvariantCulture Uses a “standard” set of character orderings (a,b,c, … etc.). This is in contrast to some specific locales, which may sort characters in different orders (‘a-with-acute’ may be before or after ‘a’, depending on the locale, and so on). Ordinal On the other hand, looks purely at the values of the raw byte(s) that … Read more
Two options: Use a NumericUpDown instead. NumericUpDown does the filtering for you, which is nice. Of course it also gives your users the ability to hit the up and down arrows on the keyboard to increment and decrement the current value. Handle the appropriate keyboard events to prevent anything but numeric input. I’ve had success … Read more