Controls ScrollBar Interview Questions & FAQs

Questions and answers for Controls ScrollBar.

75. Controls ScrollBar

75.1 What is WPF?

75.2 What is XAML?

75.1 How can I use the member values of the enumeration to set the HorizontalScrollBarVisibility property of the ScrollViewer control ?

The following example shows how to use the member values of the enumeration to set the "HorizontalScrollBarVisibility" property of the ScrollViewer control.


														[XAML]
														
														<Page 
															xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
														xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
														WindowTitle="ScrollViewer Sample">
														<ScrollViewer HorizontalScrollBarVisibility="Auto">
														<StackPanel VerticalAlignment="Top" 
															HorizontalAlignment="Left">
														<TextBlock TextWrapping="Wrap" 
															Margin="0,0,0,20">Scrolling is enabled when it is necessary.

															







														Resize the window, making it larger and 
															smaller.</TextBlock>
														<Rectangle Fill="Red" Width="500" 
															Height="500"></Rectangle>
														</StackPanel>
														</ScrollViewer>
														</Page>

75.2 How can I use the Content-Scrolling Methods of ScrollViewer ?

Separator controls inside Menu elements appear differently from Separator controls outside a Menu. When you create a Menu with a Separator, the control automatically applies the Style identified by the "SeparatorStyleKey" property. Styles are placed in resource dictionaries and are searched for by their keys. To change the Style of a Separator inside a Menu, you must use the "SeparatorStyleKey" property to create your new Style.

The following example demonstrates this.


														[XAML]
														
														<Style x:Key="{x:Static MenuItem.SeparatorStyleKey}" 
															TargetType="Separator">
														<Setter Property="OverridesDefaultStyle" Value="true" />
														<Setter Property="Template">
														<Setter.Value>
														<ControlTemplate TargetType="{x:Type Separator}">

															



  
														<Border Width="30" Height="4" Margin="4" 
															Background="Red"/>
														</ControlTemplate>
														</Setter.Value>
														</Setter>
														</Style>

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Controls ScrollBar Interview Questions & FAQs

75. Controls ScrollBar

75.1 How can I use the member values of the enumeration to set the HorizontalScrollBarVisibility property of the ScrollViewer control ?

75.2 How can I use the Content-Scrolling Methods of ScrollViewer ?