Develop Reference

Vertical alignment in Style

I have a very simple style. The code behind does nothing (for now).
<Style TargetType="{x:Type xxx:Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type fluent:Button}">
<Border BorderBrush="Black" BorderThickness="1,1,1,1">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
and then in the MainWindow I'll use it as:
<xxx:Button Content="1" FontSize="46" />
This causes the text to not be vertically centered. I asked a different question about this and the response was that its due to the way fonts scale and how they all scale differently. That's well and all, but how can I universally center the content in the border without knowing what it is? In the above example its just text, but it can be an icon or button, etc. Those all seem to center properly... is there a trick to getting it to work with text since every font will have a different "fudge factor"?

Horizontal alignment in control seems to be ignored on all but the last item

I have a custom radio button based on togglebutton:
<Style TargetType="{x:Type local:ToolbarRadioButton}" BasedOn="{StaticResource {x:Type ToggleButton}}">
<Setter Property="Width" Value="60"/>
<Setter Property="Height" Value="60"/>
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel Orientation="Vertical">
<iconPacks:PackIconModern Kind="{Binding TbIcon, RelativeSource={RelativeSource AncestorType=RadioButton}}"
Height="30" Width="35" HorizontalAlignment="Center"/>
<TextBlock Text="{Binding TbText, RelativeSource={RelativeSource AncestorType=RadioButton}}" FontSize="12"
HorizontalAlignment="Center"/>
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
I use this control to create four toggle/radio buttons. I've horizontal centered the items in datatemplate, but I end up with this:
Forecast and its icon seem to be centered, but the others are partially left-aligned. They all use the same control so shouldn't they all be centered?
EDITS FOR CLARITY:
It doesn't matter which order I put them in, Forecast is always the one that's aligned correctly.
There is no whitespace in the text nor is there whitespace in the images and all images are sized according to the control defined above. Here's the implementation portion in case it's useful, though they're all the exact same:
<StackPanel Orientation="Horizontal" Grid.Column="0" Grid.Row="0">
<customs:ToolbarRadioButton TbText="Day" TbIcon="CalendarDay" GroupName="calViewType" x:Name="dayOnOff"/>
<customs:ToolbarRadioButton TbText="Week" TbIcon="CalendarWeek" GroupName="calViewType" x:Name="weekOnOff"/>
<customs:ToolbarRadioButton TbText="Month" TbIcon="CalendarMonth" GroupName="calViewType" x:Name="monthOnOff" IsChecked="True"/>
<customs:ToolbarRadioButton TbText="Forecast" TbIcon="PeopleMultiple" GroupName="calViewType" x:Name="forecastOnOff"/>
</StackPanel>

For future readers: I figured out the answer by digging into the documentation on Button. There is a property on buttons called HorizontalContentAlignment (and vertical, of course) that apparently needs to be set to align the visual content. You can't set the HorizontalAlignment property of the item that is the content explicitly; apparently, the button wants to do that for you.

WPF Slanted TabItem

I am modifying the Header of a TabItem to conditionally display an Image, which led me to this MSDN article: HeaderedContentControl.Header Property. I attempted the code and substituted in my conditional image, which does what I expect.
However, the image in that example shows the TabItems with a different style than what I got when I ran my example. Where can I get the style for the slanted TabItems in the MSDN example?

Did you also apply the style for the HeaderedContentControl from the example?
<Style TargetType="HeaderedContentControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type HeaderedContentControl}">
<StackPanel>
<Grid>
<Rectangle Stroke="{TemplateBinding Background}"/>
<ContentPresenter ContentSource="Header"/>
</Grid>
<Grid>
<Rectangle Fill="{TemplateBinding Background}"/>
<ContentPresenter ContentSource="Content"/>
</Grid>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
This overrides the default ControlTemplate of the control. Also, if you use TabControl instead of HeaderedContentControl, it is possible that the results vary.

How to set vertical text in the column headers of WPF DataGrid?

Well, actually rotated -90 degrees from horizontal is what I mean.
I need to do this because the text for the header is quite long but the cell value is short, and I want to fit a lot of columns on the screen.
Is it possible to do this easily or do I need to learn about resources and templates first? I don't mind a "hack" solution!

This will rotate the whole ColumnHeaderCell:
<DataGrid.ColumnHeaderStyle>
<Style TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="270" />
</Setter.Value>
</Setter>
</Style>
</DataGrid.ColumnHeaderStyle>
Be aware: this means HorizontalContentAlignment is then a VerticalContentAlignment and vice versa.

Here is another way to do it:
<Style x:Key="soDataGrid_ColumnHeaderRotateStyle" TargetType="DataGridColumnHeader" >
<Setter Property="ContentTemplate" >
<Setter.Value>
<DataTemplate>
<TextBlock TextWrapping="Wrap" Text="{Binding}"
FontWeight="Bold" Width="60"
VerticalAlignment="Center" TextAlignment="Center"
HorizontalAlignment="Center">
<TextBlock.LayoutTransform>
<RotateTransform Angle="270" />
</TextBlock.LayoutTransform>
</TextBlock>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="HorizontalContentAlignment" Value="Center" />
</Style>
You can use the style as follows
<DataGridComboBoxColumn Header="Portrait /
Landscape" Width="42"
HeaderStyle="{StaticResource soDataGrid_ColumnHeaderRotateStyle}"
SelectedItemBinding="{Binding Orientation}"
ItemsSource="{Binding Mode=OneWay,
Source={StaticResource languageEnum}}" />
I find this approach gives you a lot of control. It is helpful to use the line break code in long header text.
Unfortunately I have found you need to hardcode the width of the rotated textblock - maybe there is a better way to set this width based on the text content.

One-sided rounded buttons in Silverlight

I want to make a collection of buttons in silverlight.
They are in a collection that goes from left to right and the buttons are lined up so that they are touching on the left and right sides.
Here is the rub:
The collection has rounded corners but the buttons in between the end buttons in the collection do not have rounded ends. So basically, for the buttons on the far left and right side of the collection, they have to be somewhat special because they have to have one flat vertical side and one rounded side. Is this possible to do in silverlight without resorting to making a special bitmap for the end buttons?
One idea I have is somehow declare a canvas with a bitmap background and then have overlapping ellipse and rectangle
<Canvas Height="100" HorizontalAlignment="Left" Margin="189,381,0,0" VerticalAlignment="Top" Width="200" Background="Black">
<Rectangle Fill="#FFF4F4F5" HorizontalAlignment="Left" Stroke="Black" Width="58" Height="61" Canvas.Left="7" Canvas.Top="16" />
<Ellipse Fill="#FFF4F4F5" HorizontalAlignment="Left" Stroke="White" Width="65" StrokeThickness="0" Height="59" Canvas.Left="31" Canvas.Top="17" />
</Canvas>

Here is a simple example of the effect you are trying to achieve that utilizes custom ControlTemplate to skin the buttons in three ways:
<Grid HorizontalAlignment="Center">
<Grid.Resources>
<Style x:Key="ButtonLeftStyle" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Background="DarkGray" CornerRadius="10,0,0,10">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ButtonCenterStyle" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Background="DarkGray" CornerRadius="0,0,0,0">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ButtonRightStyle" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Background="DarkGray" CornerRadius="0,10,10,0">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Grid.Resources>
<StackPanel Orientation="Horizontal">
<Button Width="75" Height="25" Style="{StaticResource ButtonLeftStyle}" Content="Left"/>
<Rectangle Width="2"/>
<Button Width="75" Height="25" Style="{StaticResource ButtonCenterStyle}" Content="Center"/>
<Rectangle Width="2"/>
<Button Width="75" Height="25" Style="{StaticResource ButtonRightStyle}" Content="Right"/>
</StackPanel>
</Grid>
And this looks like:
There's a lot more you can do here but this shows an approach you can use. Here's a great blog article with more information and examples of this technique:
Silverlight Tutorial Part 7: Using Control Templates to Customize a Control's Look and Feel

I solved the problem by using a visual trick. First of all, my trick required I placed the buttons on an image that would represent the background. The buttons were somewhat transparent so the color of this background came through
The buttons in the middle be simple rectangle canvas classes. While the end buttons had rounded ends.
The middle buttons were in front of the buttons on the end and they overlapped them.
The buttons were transparent and so normally it would not work because you would be able to see the end buttons edges behind the middle buttons. I solved this by putting a rectangle filled with the color of the background image "between" (think in 3D layered depth terms) the end buttons and the rectangle shapped buttons in front of it. The colored rectangles only were positioned in front of the end buttons that were behind the rectangle buttons in front of them.
This was kind of a hack but it worked. When I have time, I will try the solutions suggested here.

Yeah, even simpler, based on Rick'S, as you just want to use the styles to address the rounded corners of your button template border:
<Grid HorizontalAlignment="Center">
<Grid.Resources>
<!-- Default Template -->
<ControlTemplate TargetType="Button">
<Border x:Name="Border" Background="DarkGray" CornerRadius="0">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
<!-- Custom Styles for edges -->
<Style x:Key="ButtonLeftStyle" TargetType="Button">
<Setter Property="CornerRadius" Value="10,0,0,10" TargetName="Border"/>
</Style>
<Style x:Key="ButtonRightStyle" TargetType="Button">
<Setter Property="CornerRadius" Value="0,10,10,0" TargetName="Border"/>
</Style>
</Grid.Resources>
<StackPanel Orientation="Horizontal">
<Button Width="75" Height="25" Style="{StaticResource ButtonLeftStyle}" Content="Left"/>
<Rectangle Width="2"/>
<Button Width="75" Height="25" Content="Center"/>
<Rectangle Width="2"/>
<Button Width="75" Height="25" Style="{StaticResource ButtonRightStyle}" Content="Right"/>
</StackPanel>