How to show a file extension within a document library view

Question

I'm working on a Custom webpart and would like to show icons for the extensions. This is on a Sharepoint Designer 2010. Also if i have extensions like .wav how can i show or add a custome icon. Thanks in advance

Answer 1

You can change File association icons globally by following steps described here:

Changing File Associations Icons in SharePoint 2010

Basic steps are:

1. Upload icon file to SP (\14\TEMPLATE\IMAGES)
2. Locate DocIcon.xml (\14\TEMPLATE\XML)
3. Add <Mapping Key=”[YOUR EXTENSION]” Value=”[ICON FILE]”/> (eg. <Mapping Key=”pdf” Value=”icpdf.gif”/>)
4. Make iisreset

Answer 2

If it's custom code then you can use SPUtility.MapToIcon to get the name of the icon in "/_layouts/images/"

If it's a view then just add the column DocIcon

For adding new images see the answer by @Vedran