Tip of the Day #4 (Connection Strings in Config files)

From .NET 2.0 onwards a new and improved configuration management system has been put in place. You can now add a <connectionString> element to the config file and use it to place the connection strings to the database and then retrieve then in a consistent way in your application. It supports multiple connection strings too […]

Functional Programming in C#3.0

Oliver Sturm spoke to to Scottish Developers in Glasgow earlier this week to a packed room! His topic was Functional programming in C# 3.0. The feedback was overwhelmingly positive and he received comments such as “Great code examples” and “very worthwhile”. So, if you missed last nights session, or you just want to review the […]

Introduction to LINQ to XML

Last year I wrote about the new languages features available in C# 3.0 (Anonymous Types, Extension Methods, Automatic Properties, A start on LINQ, Object Initialisers I, Object Initialisers II, & Object Initialisers III) and since then I’ve really got in to LINQ, especially LINQ to XML. The reason for that is that I hate XPath […]

Oh No! More on SQL Injection Attacks

I’ve not written about this in a while becuase it seemed that people were getting the message. But today I was asked, on Code Project, “I am wondering why injecting values into the [SQL] string is considered a security risk?” Here is my response: Because if you inject strings into the SQL, especially ones that […]

Test Driven Development By Example

Introduction A lot has been written on the subject of test driven development, and especially on the idea that tests ought to be written first. This is an ideal that I strive for, however, I have a tendency to write the unit tests afterwards. Some people learn better by example. This article, rather than going […]

How to get a list of all subdirectories

This is an example of how to obtain a list of all subdirectories using a recursive method with the .NET Framework. public static List GetSubdirectories(DirectoryInfo directory) { // Set up the result of the method. List<DirectoryInfo> result = new List<DirectoryInfo>(); // Attempt to get a list of immediate child directories from the directory // that […]

Passing Values Between Forms in .NET

Introduction I wrote this article in response to an almost overwhelming number of requests on forums on how to pass a variable from a one Windows Form to another. In fact, saying that it is going between one form and another is somewhat of a misnomer because this will work for any type of object […]