Pattern mvvm and Entity Framework

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C#

MVVM

Hi,I want to know how to add data to a database using entity framework
my code Xaml :
<Label Content="Code Client"/>
<Label Content="Adresse"/>
<Label Content="Tel">
<textbox text="{Binding CClient}" name="TxtCClient"/>
<textbox text="{Binding Adresse}" name="TxtAdress"/>
<textbox text="{Binding RaisonSocial}" name="TxtRaisonSocial"/>
<Button Content="Ajouter" Command="{Binding ajouter}"/>
How to bind data and added it to the base !
After what I should do!