In WPF / C# binding a local database in code behind

Theoratically, my problem seems quite straightforward !
I have a local database named "QuestLb";
In that database I have a datatable named "Quebec";
In that datatable,, in the code behind, I need to read  the (Second Row ; First Column) value (a string type value )
This value, named "ValeurQ1" is binded to a TextBlock :

<TextBlock Name="tbkQuestLbl_q1"  Text="{Binding Path=ValeurQ1}" </TextBlock>

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How can I do that ?
I have found a lot of examples working in Windows Forms and/or with an external server but nothing with WPF/local database
Thanks for your help