Tips and tricks in C# .NET
November 25, 2015 Leave a comment
You probably know how to read the key pressed by the user in a .NET console application by the Console.ReadKey() method:
ConsoleKeyInfo pressedKey = Console.ReadKey();
Console.WriteLine("You have pressed: {0}", pressedKey.Key);
November 24, 2015 1 Comment
Indexers are used extensively when accessing items in an array or List:
Friend f = friends[2];
It’s fairly easy to implement your own indexer. Imagine a table with guests sitting around. We could implement an indexer to easily access guest #n.
The Guest object is simple with only one property:
public class Guest
{
public string Name { get; set; }
}
November 11, 2015 Leave a comment
The HttpClient object in the System.Net.Http namespace has become quite a standard object in .NET to initiate HTTP calls in code. In this short post I’d like to draw your attention to one of its constructors which allows you to set various useful options.
November 10, 2015 3 Comments
If you’ve worked extensively with .NET console applications then you’ve probably encountered difficulties with parsing the command line arguments. They are passed into the args argument of the Main function. Then it’s your task to investigate if the caller has passed in all necessary arguments:
…et cetera, the list could grow a lot longer.
Fortunately there are libraries that can help you parse the arguments. One such library is called Command Line Parser Library available from NuGet here. You can find its project page here with some initial code examples.
November 4, 2015 3 Comments
The ExpandoObject in the System.Dynamic namespace is an interesting option if you ever need to write dynamic objects in C#. Dynamic objects are ones that are not statically typed and whose properties and methods can be defined during runtime. I’ve come across this object while I was discovering the dynamic language runtime (DLR) features in .NET. We’ve seen an example of that in this post with the “dynamic” keyword.
November 3, 2015 2 Comments
Say you’d like to divide an integer, e.g. 20, into equal parts of 3 and distribute any remainder equally across the groups. The result of such an operation would be the following 3 integers:
7,7,6
20 can be divided into 3 equal parts of 6 and we have a remainder of 20 – 6 * 3 = 2. 2 is then added as 1 and 1 to the first two groups of 6. The result is a more or less equal distribution of the start integer.
The following function will perform just that:
October 30, 2015 2 Comments
Say you’d like to calculate the difference between two dates in terms of number of months.
The following simple function will do just that: return the absolute number of months between two dates:
October 28, 2015 2 Comments
The DateTime object – or struct – lacks functions for quarters. You can e.g. add minutes, months, days etc. to a date but not quarters.
Here comes a short list of simple quarter-related functions.
October 27, 2015 1 Comment
Occasionally you might need to change the size of the console window in a .NET console application. There are methods and properties available in the Console object that enable you to perform this operation easily.
October 20, 2015 Leave a comment
Occasionally you need to truncate a date to the nearest year, month, day etc. E.g. you need to transform the date 2015-06-05 15:33:30 into 2015-06-05 00:00:00, i.e. truncate it to the nearest day and set the lower levels of the date to 0.
Here comes a series of extension methods to help you with that:
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