Article demonstrates how to make legend not for each Series, but for each value.
Let's say that we have
colored pie chart:

Series1 is not what we are expecting on our chart, we want countries.
To make things right we need to perform the following steps:
1. Specify DisplayInLegend property to Values:

2. Set AutoArgument to False:

After performing these steps we will get the following result:

Article ID: 550, Created: February 13, 2013 at 10:54 AM, Modified: February 13, 2013 at 10:54 AM