Extracting a UK Postcode into its seperate parts

Hi All

I am having some problem with building an application on .NET which needs to take an input from a user in the form of a UK postcode,and then split it up into the different parts that make up a postcode.

The format of UK postcode is generally:

    A9 9AA
    A99 9AA
    A9A 9AA
    AA9 9AA
    AA99 9AA
    AA9A 9AA

Explanation at http://en.wikipedia.org/wiki/UK_postcodes

This split up into Area, District, Sector and Unit. For example YO31 1EB is:

YO  -  Area
31  -  District
1  -  Sector
EB  -  Unit

I need to store these parts separately in the database once extracted.

Any help would be appreciated.

Thanks
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