vStationURM/vStationManagementTool/App.xaml

<Application x:Class="vStationManagementTool.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:vStationManagementTool"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Resources/Themes.Common.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.Button.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.ComboBox.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.DataGrid.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.Expander.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.ListBox.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.TabItem.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.TabControl.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.TextBlock.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.ToggleButton.xaml"></ResourceDictionary>
                <ResourceDictionary Source="Resources/Themes.Calendar.xaml"></ResourceDictionary>
              
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>