Chart control axis labels

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C#

ASP.NET

C#4.0

chart

I've added ASP 4.0 chart control and the x-Axis labels are like this:

<img alt="IMG example" src="http://koloh.com/chart2.png" />

But I want the x-Axis labels to be one up and one down like this image :

<img alt="IMG example" src="http://koloh.com/chart1.png" />

what properties and values should be set .. Thanks in advance