Execute the next query to enable CLR.  

More info about CLR on Microsoft MSDN.

For a project I need te get the email adresses out of a string with all kinds of text in it. After a lot of trying I found the matchhandler method. It is quite easy, you just need to adjust the Replace command and add a MatchEvaluator. Then you can use the matchhandler to do anything with the right string. In this case I´m adding it to a generic list.

And add the string to the generic list.

I've search them all up for a 1000 times. Now I'm going to write them down as reference. This post will grow in the next few months.

Remember do not forget to set the behaviorId of the control. 

References:

CollapsiblePanelExtender
Expand:

• $find('BehaviorId')._doOpen();

Collapse:

• $find('BehaviorId')._doClose();

• $find('BehaviorId').collapsePanel();

ModalPopupExtender
Show popup:

• $find('BehaviorId').show();

Hide popup:

• $find('BehaviorId').hide(); 
  

I wrote an extension method for the string type. With this method you can check if an string is an Guid. The method returns a Bool.

If you're wondering I didn't wrote the Regex myself :-) (but it works)

This brute-force method is mutch faster (thanks to Arjan and Tag for the comments):

A good example how extension methods can make some things easier. 

Hope it helps!

In on of our project we use ASHX file to dynamicly generate stylesheets depending on the user. An problem occurred when the userdata was loaded from the Session. The Session object was NULL.

After searching the internet I found the solution for this problem. You need to implement the folowing interfaces on the ASHX;  IRequiresSessionState and IReadOnlySessionState. See example below.