How can I achieve a dashed or dotted border in WPF?

问题

I have a ListViewItem that I am applying a Style to and I would like to put a dotted grey line as the bottom Border.

How can I do this in WPF? I can only see solid color brushes.

回答1:

This worked great in our application, allowing us to use a real Border and not mess around with Rectangles:

<Border BorderThickness="1,0,1,1">
   <Border.BorderBrush>
      <DrawingBrush Viewport="0,0,8,8" ViewportUnits="Absolute" TileMode="Tile">
         <DrawingBrush.Drawing>
            <DrawingGroup>
               <GeometryDrawing Brush="Black">
                  <GeometryDrawing.Geometry>
                     <GeometryGroup>
                        <RectangleGeometry Rect="0,0,50,50" />
                        <RectangleGeometry Rect="50,50,50,50" />
                     </GeometryGroup>
                  </GeometryDrawing.Geometry>
               </GeometryDrawing>
            </DrawingGroup>
         </DrawingBrush.Drawing>
      </DrawingBrush>
   </Border.BorderBrush>

   <TextBlock Text="Content Goes Here!" Margin="5"/>
</Border>

Note that the Viewport determines the size of the dashes in the lines. In this case, it generates eight-pixel dashes. Viewport="0,0,4,4" would give you four-pixel dashes.

回答2:

You can create a dotted or dashes line using a rectangle like in the code below

<Rectangle Stroke="#FF000000" Height="1" StrokeThickness="1" StrokeDashArray="4 4"
                                                       SnapsToDevicePixels="True"/>

Get started with this and customize your listview according to your scenario

回答3:

A bit late to the party, but the following solution worked for me. It is slightly simpler/better than both other solutions:

<Border BorderThickness="1">
  <Border.BorderBrush>
    <VisualBrush>
      <VisualBrush.Visual>
        <Rectangle StrokeDashArray="4 2" Stroke="Gray" StrokeThickness="1"
                  Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}}, Path=ActualWidth}"
                  Height="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}}, Path=ActualHeight}"/>
      </VisualBrush.Visual>
    </VisualBrush>
  </Border.BorderBrush>

  <TextBlock Text="Whatever" />
</Border>

回答4:

Xaml

<Grid>
<Grid.RowDefinitions><RowDefinition Height="auto"/></Grid.RowDefinitions>
<Grid.ColumnDefinitions><ColumnDefinition Width="auto"/></Grid.ColumnDefinitions>
<Rectangle RadiusX="9" RadiusY="9" Fill="White" Stroke="Black" StrokeDashArray="1,2"/>
<TextBlock Padding = "4,2" Text="Whatever"/>
</Grid>

来源：https://stackoverflow.com/questions/6195395/how-can-i-achieve-a-dashed-or-dotted-border-in-wpf

标签

wpf

styles

border

listviewitem