FeedCenter/Application/Options/FeedWindow.xaml

<Window x:Class="FeedCenter.Options.FeedWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:properties="clr-namespace:FeedCenter.Properties"
        xmlns:feedCenter="clr-namespace:FeedCenter"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        d:DataContext="{d:DesignInstance Type=feedCenter:Feed}"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
        xmlns:options="clr-namespace:FeedCenter.Options"
        mc:Ignorable="d"
        Title="FeedWindow"
        Height="350"
        Width="450"
        WindowStartupLocation="CenterOwner"
        Icon="/FeedCenter;component/Resources/Application.ico"
        FocusManager.FocusedElement="{Binding ElementName=UrlTextBox}">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>
    <Grid Margin="6">
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <TabControl Name="OptionsTabControl"
                    Grid.Row="0"
                    Grid.Column="0"
                    mah:HeaderedControlHelper.HeaderFontSize="16"
                    mah:TabControlHelper.Underlined="SelectedTabItem">
            <TabItem Header="{x:Static properties:Resources.generalTab}">
                <StackPanel Margin="0,4"
                            options:Spacing.Vertical="8">
                    <TextBox Name="UrlTextBox"
                             mah:TextBoxHelper.UseFloatingWatermark="True"
                             mah:TextBoxHelper.Watermark="{x:Static properties:Resources.feedUrlLabel}"
                             mah:TextBoxHelper.SelectAllOnFocus="True"
                             Text="{Binding Path=Source, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
                    <TextBox Name="NameTextBox"
                             mah:TextBoxHelper.UseFloatingWatermark="True"
                             mah:TextBoxHelper.Watermark="{x:Static properties:Resources.feedNameLabel}"
                             mah:TextBoxHelper.SelectAllOnFocus="True"
                             Text="{Binding Path=Name, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
                    <ComboBox Name="CategoryComboBox"
                              DisplayMemberPath="Name"
                              SelectedValuePath="Id"
                              SelectedValue="{Binding Path=CategoryId}"
                              mah:TextBoxHelper.UseFloatingWatermark="True"
                              mah:TextBoxHelper.Watermark="{x:Static properties:Resources.feedCategoryLabel}" />

                    <CheckBox Name="ReadIntervalCheckBox"
                              VerticalContentAlignment="Center"
                              IsChecked="{Binding Path=Enabled, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}">
                        <StackPanel Orientation="Horizontal">
                            <Label Content="{x:Static properties:Resources.feedReadIntervalPrefix}"
                                   HorizontalAlignment="Left"
                                   Margin="0,0,5,0"
                                   VerticalAlignment="Center"
                                   Padding="0" />
                            <mah:NumericUpDown Width="100"
                                               Maximum="10080"
                                               Minimum="1"
                                               IsEnabled="{Binding ElementName=ReadIntervalCheckBox, Path=IsChecked}"
                                               Value="{Binding CheckInterval, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
                            <Label Content="{x:Static properties:Resources.feedReadIntervalSuffix}"
                                   HorizontalAlignment="Left"
                                   Margin="5,0,0,0"
                                   VerticalAlignment="Center"
                                   Padding="0" />
                        </StackPanel>
                    </CheckBox>
                </StackPanel>
            </TabItem>
            <TabItem Header="{x:Static properties:Resources.readingTab}">
                <StackPanel Margin="0,4"
                            options:Spacing.Vertical="8">
                    <ComboBox Name="OpenComboBox"
                              SelectedValue="{Binding Path=MultipleOpenAction, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=true}"
                              SelectedValuePath="Tag"
                              mah:TextBoxHelper.UseFloatingWatermark="True"
                              mah:TextBoxHelper.Watermark="{x:Static properties:Resources.openLabel}">
                        <ComboBoxItem Content="{x:Static properties:Resources.openAllSingleToolbarButton}"
                                      Tag="{x:Static feedCenter:MultipleOpenAction.SinglePage}" />
                        <ComboBoxItem Content="{x:Static properties:Resources.openAllMultipleToolbarButton}"
                                      Tag="{x:Static feedCenter:MultipleOpenAction.IndividualPages}" />
                    </ComboBox>
                </StackPanel>
            </TabItem>
            <TabItem Header="{x:Static properties:Resources.authenticationTab}">
                <StackPanel Margin="0,4">
                    <CheckBox Content="{x:Static properties:Resources.requiresAuthenticationCheckBox}"
                              Margin="0,0,0,4"
                              Name="RequiresAuthenticationCheckBox"
                              IsChecked="{Binding Path=Authenticate, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
                    <TextBox Name="AuthenticationUserNameTextBox"
                             Margin="25,0,0,4"
                             IsEnabled="{Binding ElementName=RequiresAuthenticationCheckBox, Path=IsChecked}"
                             mah:TextBoxHelper.UseFloatingWatermark="True"
                             mah:TextBoxHelper.Watermark="{x:Static properties:Resources.authenticationUserNameLabel}"
                             Text="{Binding Path=Username, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
                    <PasswordBox Name="AuthenticationPasswordTextBox"
                                 Margin="25,0,0,8"
                                 Style="{StaticResource MahApps.Styles.PasswordBox.Button.Revealed}"
                                 mah:PasswordBoxBindingBehavior.Password="{Binding Password, UpdateSourceTrigger=Explicit, ValidatesOnDataErrors=True}"
                                 mah:TextBoxHelper.UseFloatingWatermark="True"
                                 mah:TextBoxHelper.Watermark="{x:Static properties:Resources.authenticationPasswordLabel}"
                                 IsEnabled="{Binding ElementName=RequiresAuthenticationCheckBox, Path=IsChecked}" />
                </StackPanel>
            </TabItem>
        </TabControl>
        <StackPanel
            Grid.Column="0"
            Grid.Row="1"
            Orientation="Horizontal"
            Margin="0,5,0,0"
            HorizontalAlignment="Right">
            <Button Content="{x:Static properties:Resources.OkayButton}"
                    HorizontalAlignment="Right"
                    VerticalAlignment="Bottom"
                    Width="75"
                    Margin="0,0,5,0"
                    IsDefault="True"
                    Click="HandleOkayButtonClick" />
            <Button Content="{x:Static properties:Resources.CancelButton}"
                    HorizontalAlignment="Right"
                    VerticalAlignment="Bottom"
                    Width="75"
                    IsCancel="True" />
        </StackPanel>
    </Grid>
</Window>