<UserControl x:Class="UserControl1"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid>
 
    </Grid>
</UserControl>

Partial Public Class UserControl1
    Private Sub UserControl_Loaded(sender As System.Object, e As _
      System.Windows.RoutedEventArgs) Handles MyBase.Loaded
 
    End Sub
End Class

Partial Public Class UserControl1
    Private Sub UserControl_MouseMove(sender As System.Object, e As _
      System.Windows.Input.MouseEventArgs) Handles MyBase.MouseMove
 
    End Sub
End Class