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Formatting Strings in C# with String.Format
String.Format is a very powerful method but the documentation at MSDN is quite wordy and spreads the details over many pages. For this post I have made quick reference to its many specifiers and for...
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Using String.Split and String.Join to build a simple CSV reader and writer in C#
Whole programming languages have been designed (*cough* perl) so that we can cut delimited strings into bits and string them back together. For this purpose C# provides the String.Split() and...
View ArticleC# Anonymous types: the Basics
With the introduction of .NET 3.5 C# includes the “var” keyword to support anonymous types. One important motivation for this was to make code written with LINQ (Language-Integrated Query) easier to...
View ArticleManipulating Strings in C# – Finding all occurrences of a string within...
A common programming problem is to find the position of all copies of a string in another string. For finding the first copy the C# string method IndexOf is similar to the C strpos() function. It...
View ArticleManipulating Strings in C# -Replacing part of a string / Replacing all...
Very often you need to change part of a string, maybe just once, or many times over. Strings in .NET/C# are immutable we cannot actually change a string in-place. But we are able to work on copies. The...
View ArticleC# Preprocessor Directives Explained
By using pre-processor directives you can exclude parts of your code from being seen by the compiler. Excluded from the assembly they are never seen at run-time. This is different from a regular if (x)...
View ArticleUsing the C# WebClient class to upload and download FTP files
Your C# program has just calculated the weekly sales report and you need to upload it to the company file server. The C# System.Net.Webclient class makes this quite trivial. The same for downloading a...
View ArticleSimple class to submit (POST) a Web form from C#
Today I needed to automate posting some data to a web form from a C# program, and sure enough this is not at all that difficult. But surprisingly you need to call quite a large number of methods to get...
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Using C# and .NET to send an e-mail through SMTP
Sending an e-mail is pretty old news by now so it should come as no surprise that .NET contains a significant SMTP mail client. One old programming truth still holds: All programs will expand to...
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Safely cleaning HTML with strip_tags in C#
One of my favorites in the PHP libraries is the strip_tags function. Not only does it neatly remove HTML from an input it also allows you to specify which tags should stay. This is great if you are...
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