Graphics

hello every body.
I wanna to create windows service with c # that ,it able tack  snapshot and   send to server.
but my problem is when using "Screen.PrimaryScreen.Bounds" .visual studio cant know this.
I was so much search bout this problem but I cant get result. 
thank you for help me.

<StackPanel>
    <Button x:Name="BtnMainMenu"
                Content=""
                ToolTipService.ToolTip="Main Menu"
                Margin="10,10,0,0"
                FontFamily="Segoe MDL2 Assets"
                Style="{StaticResource StandardButton}">
        <Button.Flyout>
            <Flyout x:Name="MainMenuFlyout"
                    Placement="TopEdgeAlignedLeft"
                    FlyoutPresenterStyle="{StaticResource MainMenuFlyoutStyle}"
                    Closed="MainMenuFlyout_Closed">
                <SplitView x:Name="MainSplitView"
                           IsPaneOpen="True"
                           DisplayMode="Inline"
                           OpenPaneLength="180">
                    <SplitView.Pane>
                        <ListView
                            x:Name="MainMenuListView"
                            ItemsSource="{x:Bind MenuLinks}"
                            ItemTemplate="{StaticResource MainMenuItemTemplate}"
                            SelectionMode="Single"
                            Background="#FF808080"
                            IsItemClickEnabled="True"
                            ItemClick="MainMenuListView_ItemClick"/>
                    </SplitView.Pane>
                    <SplitView.Content>
                        <Frame x:Name="MainMenuContentFrame"/>
                    </SplitView.Content>
                </SplitView>
            </Flyout>
        </Button.Flyout>
    </Button>
</StackPanel>

	<StackPanel Background="{StaticResource MenuPageBg}" Width="230" Height="300">
		<Border Style="{StaticResource MenuPageHeaderStyle}">
			<TextBlock Text="Menu 4" Style="{StaticResource MenuPageTitleStyle}"/>
		</Border>
		<Grid>
			<Grid.RowDefinitions>
				<RowDefinition Height="10"/>
				<RowDefinition Height="50"/>
				<RowDefinition Height="50"/>
				<RowDefinition Height="Auto"/>
				<RowDefinition Height="50"/>
			</Grid.RowDefinitions>
			<Grid.ColumnDefinitions>
				<ColumnDefinition Width="40"/>
				<ColumnDefinition Width="Auto"/>
			</Grid.ColumnDefinitions>
			<ToggleSwitch Name ="Enabled" OnContent="Enabled" OffContent="Disabled"
						  Grid.Row="1" Grid.Column="1"
						  FontSize="18"/>
			<ToggleSwitch Name="Floating" OnContent="Goodbye World" OffContent="Hello World"
						  Grid.Row="2" Grid.Column="1"
						  FontSize="18"/>
			<Button x:Name="BtnColor" Grid.Row="3" Grid.Column="1"
				Width="49" Height="48" Background="Gray" BorderBrush="{StaticResource WAVGray}" BorderThickness="1">
				<Rectangle Width="30" Height="27">
					<Rectangle.Fill>
						<SolidColorBrush Color="{x:Bind TheColorPicker.Color, Mode=OneWay}"/>
					</Rectangle.Fill>
				</Rectangle>
				<Button.Flyout>
					<Flyout Placement="TopEdgeAlignedLeft">
						<ColorPicker x:Name="TheColorPicker"
						ColorSpectrumShape="Ring"
						IsMoreButtonVisible="False"
						IsColorSliderVisible="True"
						IsColorChannelTextInputVisible="False"
						IsHexInputVisible="False"
						IsAlphaEnabled="True"
						IsAlphaSliderVisible="True"
						IsAlphaTextInputVisible="False"	/>
					</Flyout>
				</Button.Flyout>
			</Button>
		</Grid>
	</StackPanel>
</Page>

import pygame

pygame.init()
screen = pygame.display.set_mode((800, 600))

pygame.display.set_caption("ALix")
icon = pygame.image.load("nater.jpg")
pygame.display.set_icon(icon)

playerImg = pygame.image.load('nater.jpg')
playerX = 400
playerY = 300

def player():
    screen.blit(playerImg, (playerX, playerY))

running = True
while running:
    screen.fill((255, 255, 255))

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
player()

pygame.display.update()