New Post: PropertyGrid : Aligning property name labels to the left in xaml

I understand, but I'm really centered by default as you can see on that picture, even category titles are centered : http://postimg.org/image/bg1sepcop/

Finally I've aligned to left all the PropertyGrid to become like on your picture. Tell me if there is a better solution.
My difficulty was I wanted to align to the left only the PropertyName column, now it's easier.

<xctk:PropertyGrid Name="PropertyGridEquipement" ShowTitle="False" ShowSummary="False"
                                    UpdateTextBoxSourceOnEnterKey="True" TextBlock.TextAlignment="Left">

Thanks for your answer and for the propertyGrid in general, it's very impressive and functionnal !