It is to develop from TemplateStudio which uses the ribbon in WPF Prism MvvM model.

I starded with :

• Visual Studio 2022 Community
• TemplateStudio Ribbon Prism

• First Step
• Second Step
• Step 3

• WPF App Ribbon TemplateStudio

• TemplateStudio

  For all Microsoft Apps WinUI, WPF, UWP

• MahApps.Metro

  Styling the WPF application

• MahApps.Metro.IconPacks

  Tons of icons

• Fluent.Ribbon

  Manage Menu Office like

Add a Ribbon Button To Navigate to a New Page

To play with MahApps.Metro.IconPacks

Add a borner style to esealy transform Metro Icon Packs into Icon Image

Validation Rules Studing

Like a surgeon I transplanted validation rules from ExpenseItDemo

Now I'm looking for why the beavior is not the same. What's wrong ? First TextBox is not feed with default text.

See Commit :

Default Text for TextBox in DataContext (use of SetProperty Prism.MvvM.BindableBase