Mads Kristensen

A blog about everything technology.
2 min read ASP.NET

ASP.NET ships with a SqlMembershipProvider and a ActiveDirectoryMembershipProvider that makes user authentication and authorization very easy to implement, but for some reason those are the only membership providers...

2 min read ASP.NET , Client-side

Little Helper , the interactive help system for Headlight is now live and almost finished. It is build much like a Wiki so Headlight users can contribute and ask questions. I like to call it a good mix of a blog and an...

1 min read Server-side

At work, we had to do wildcard searches using regular expressions to match allowed domain names. For instance, this expression “*.madskristensen.dk” should match “www.madskristensen.dk”. So, my boss Jimmi wrote a method...

2 min read ASP.NET

Today I wrote a new dynamic RSS feed for a little project called Little Helper . It all works fine, but when I tried to validate it using FeedValidator , the pubDate was invalid. The validator told me that the date was...

2 min read ASP.NET

In a recent web project I suddenly got an unexpected exception when I was uploading a file using a standard <asp:FileUpload /> control in ASP.NET 2.0. I’ve only been testing the website in Firefox at that point and...

2 min read ASP.NET

Yesterday I had to come up with a method that retrieved the subdomain from the current web request on an ASP.NET website. I thought that the System.Uri class contained that information in an easy retrievable way, but no...

2 min read Server-side

In C# 2.0 Microsoft introduces some new methods on the String class, one of them being Contains. The Contains method checks if a string in contained within another string in a case-sensitive way. It is very easy to use...

3 min read Security

When building a new application, be it Windows Form or ASP.NET, security is an important factor to consider from the very beginning. There are hundreds of books and thousands of websites helping you to secure your...

2 min read Security

It’s always a good idea to have a password policy when creating new applications. A password policy can vary from project to project, but the important part is just to have one to begin with. It is very difficult to...

2 min read General

I have a normal sized MP3 collection on my computer and I let Windows Media Player take care of arranging the MP3 and WMA files in the folders based on the media information in the ID3 tags. In my music folder, there is...