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 »
Anonymous types are useful, especially in LINQ queries where you often want to iterate through an array of items and project them into some arbitrarily shaped objects that are little more than simple data containers, using anonymous types save you the hassle of having to first declare those types which you will simply throw away …
Quite some time ago I was asked to cover a C# developer interview for one of my neighbouring teams, and on the sheet of questions the original interviewer wanted me to ask was this question: Q. Why should you NEVER use delegates? I thought: “Well, at least I can rule myself out for the role!” …
Well, you learn something new everyday and today I found out that you can’t have a partial class that spans across projects in C#, i.e. if I have a partial class called MyClass in ProjectA: 1: namespace ProjectA.Entities 2: { 3: public partial class MyClass { } 4: } 5: I won’t be able to …
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