access root folder-windows mobile

how to access root folder on windows mobile? I can see only 开发者_高级运维the folder from folder 'my documents'. I use the command -> openfiledialog

The OpenFileDialog in can really only display the Documents and External Storage Card folder. Implementing your own file browser should not be too complicated.

Here's are some articles on the subject:

http://www.christec.co.nz/blog/archives/286

http://www.mobilepractices.com/2008/02/custom-openfiledialog-implementation.html

http://www.mobilepractices.com/2008/03/looking-for-openfiledialog-for.html