The dash style of a line is specified by the StrokeDashArray property that gets or sets a collection of double variables : Style « Windows Presentation Foundation « VB.Net Tutorial

1. VB.Net Tutorial
2. Windows Presentation Foundation
3. Style

<Window x:Class="ScaleInCustomSystem"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Scale In Custom System" Height="310" Width="260">
  <StackPanel Height="280" Width="250">
        <Line X1="30" Y1="50" X2="250" Y2="50" Stroke="Blue" StrokeThickness="2"
          StrokeDashArray="5,3" />


  </StackPanel>
</Window>

16.83.Style
	16.83.1.	Property Trigger: mouse over and focused
	16.83.2.	Multi Data Trigger Demo
	16.83.3.	Button Based On Style with Target Type
	16.83.4.	Button With Local Style
	16.83.5.	Graphics Styles
	16.83.6.	Reuse Font With Styles
	16.83.7.	Style Inheritance
	16.83.8.	Override Style Properties
	16.83.9.	Create Styles That Adapt to the Current OS Theme
	16.83.10.	Set OverridesDefaultStyle to true
	16.83.11.	Inherit from a Common Base Style
	16.83.12.	Add any overriding property values
	16.83.13.	Clear customized style with Null
	16.83.14.	Create a Named Style
	16.83.15.	Applying a Consistent Margin with a Style
	16.83.16.	Style applied to a Button element
	16.83.17.	Create a custom Style and use it for Button with Style element and Setter element
	16.83.18.	Style targeting a specific type of element(Button)
	16.83.19.	Extending a Style using the BasedOn attribute
	16.83.20.	Target Type Derivatives
	16.83.21.	Use number substitutions for different culture settings
	16.83.22.	Implicit use of a Style
	16.83.23.	Create a Typed Style for Button
	16.83.24.	The dash style of a line is specified by the StrokeDashArray property that gets or sets a collection of double variables
	16.83.25.	Create a style for use as a FocusVisualStyle on a control.
	16.83.26.	Style with Property Trigger.xaml
	16.83.27.	Set a Style Programmatically