It’s been a while since I had to create a config section handler and my god did I forget how cumbersome a process it is! Instead of doing all these work to make a bespoke config section handler every time you want to parse some data out of the app.config file, wouldn’t it be nice …
Suppose you have an array of numbers, say, [1, 3, 5, 7, 9, …], and you want to pair each element up with its neighbour in the array, e.g. [[1, 3], [3, 5], [5, 7], [7, 9], …]. Sure, you can iterate through the indices of the elements and recursively grab the element at an …
.Net Tips – Use LINQ to create pairs of adjacent elements from a collection Read More »
Admit it, we’ve all done it before, writing those nasty nested loops just so we can iterate through multiple lists to get some combination/permutation of the lists, e.g.: 1: for (int i = 0; i < 10; i++) 2: { 3: for (int j = 0; j < 10; j++) 4: { 5: for (int …
In C#, it’s possible to combine two delegates, A and B to create a new multicast delegate, C: When the multicast delegate is executed, the combined delegates are executed in order as you can see from the example above. But before you can start mix and matching your delegates like a kid in a …
.Net Tips – Make sure the runtime types match when combining delegates Read More »
1: /// <summary> 2: /// Parses a string as a short 3: /// </summary> 4: public static short ParseShort(this string str, bool throwOnOverflow = true) 5: { 6: return str.ParseAsStruct(Convert.ToInt16, throwOnOverflow); 7: } 8: 9: /// <summary> 10: /// Parses a string as an ushort 11: /// </summary> 12: public static ushort ParseUshort(this string str, …
Extension Methods – Helpful parse methods for string Read More »
You might know this already, but in C# whenever you write something like this: 1: if (MethodA() || MethodB()) 2: { 3: // do something 4: } it’s not guaranteed that both methods will be executed, so DO NOT DO THIS if you’re relying on both methods to be expected to cause some desirable side-effects. …
I found out two interesting things about the ExpandoObject class introduced in C# 4 this bank holiday weekend: 1. you can specify custom events on them 2. it implements the INotifyPropertyChanged interface Here are some quick demos to show you how to use these features: Custom Events To add a custom event is the same …
In C#, when you have to work with JSON data you’re usually represented with two choices – DataContractJsonSerializer or JavaScriptSerializer. There are other popular third-party libraries out there, such as the popular Json.Net project, but for the rest of this blog let’s just focus on the two built-in JSON serializers and see how they differ. …
JSON serialization – DataContractJsonSerializer vs JavaScriptSerializer Read More »
As many others have shown, the new ExpandoObject introduced in C# 4 can be pretty useful in some scenarios. However, on the odd occasion when you want to convert an ExpandoObject to a static type you have defined you can be forgiven for feeling a little lost as there are no well documented ways to …
As you know, the ExpandoObject class implements the IDictionary<string, object> interface, so if you have an ExpandoObject you can easily cast it to an IDictionary<string, object> but there’s no built-in way to easily do the reverse. Luckily, I came across a very useful extension method today which converts an IDictionary<string, object> into an ExpandoObject, which …
IDictionary<string, object> to ExpandoObject extension method Read More »
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