Develop Reference

How to use <FontFamily> to reference resource fonts？

I added a font file to the project, and I want to put it in the resource dictionary.
But it can't be identified correctly. I think it can only recognize the font name.
code
<FontFamily x:Key="anticon-uri">pack://application:,,,/Ant.WPF;component/Resources/#anticon</FontFamily>
I've tried the following method, it's OK.
```
<Style x:Key="anticon" TargetType="TextBlock">
<Setter Property="FontFamily" Value="pack://application:,,,/Ant.WPF;component/Resources/#anticon" />
</Style>
<Style BasedOn="{StaticResource anticon}" TargetType="TextBlock">
<Setter Property="FontSize" Value="20" />
</Style>
```
Do you have a better way?

I just found the answer.
syntax： <FontFamily x:Key="anticon-uri">ResourceFile FontName</FontFamily>
Example：
<FontFamily x:Key="anticon-uri">pack://application:,,,/Ant.WPF;component/Resources/#anticon anticon</FontFamily>

General WPF Rendering Rules (Multiple styles on same target type)

Relating on this question (Multiple styles on same target type) i have another point concerning the general wpf styling rules.
As mentioned in one of the answers above, wpf applies the closest style definition to the control when no x:key is specified. (also applies to styles with the same key; given the fact that we have the same key here: the control type)
My question:
What if we have two same-named styles in different resource dictionaries that are both equal close and accessible to the control?
Compared to CSS you have two definitions for i.e. an a-element. In CSS same style properties are getting overriden by the last definition while different properties are merged into one logical style definition.
Does WPF behave the same or does it prefer one whole style-resource with all its properties while avoiding the other one completely?
And if the latter how does it decide to apply one or the other.
Update
dict1.xaml:
<ResourceDictionary>
<Style TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Type Button}}">
<Setter Property="BorderBrush" Value="SomeValue1" />
<Setter Property="Background" Value="SomeValue2" />
<Setter Property="FontSize" Value="SomeValue3" />
</Style>
</ResourceDictionary>
dict2.xaml:
<ResourceDictionary>
<Style TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Type Button}}">
<Setter Property="BorderBrush" Value="SomeValue4" />
<Setter Property="Foreground" Value="SomeValue5" />
</Style>
</ResourceDictionary>
SomeView.xaml:
...
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="path/dict1.xaml" />
<ResourceDictionary Source="path/dict2.xaml" />
</ResourceDictionary.MergedDictionaries>
<Grid>
<Grid.Resources>
<Style TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Type Button}}">
<Setter Property="FontSize" Value="SomeValue6" />
</Style>
</Grid.Resources>
<Button /><!--THIS IS THE CONTROL THAT MATTERS-->
</Grid>
...
I think for FontSize its simple, it applies SomeValue6 because its the closest style definition. But what about BorderBrush. Both Dictionaries are equally close to the Button and are both accessible.
And What about Background and Foreground? Does it merge both style definitions to something like this:
<ResourceDictionary>
<Style TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Type Button}}">
<Setter Property="BorderBrush" Value="SomeValue4" />
<Setter Property="Background" Value="SomeValue2" />
<Setter Property="Foreground" Value="SomeValue5" />
<Setter Property="FontSize" Value="SomeValue6" />
</Style>
</ResourceDictionary>
Of course the chaos is much bigger when you include cross-assembly dictionaries, that depend on each other and you are seeking where the actual style comes from.
This code example isn't working because of the merged dictionary and its hard to isolate the exact behavior because my actual application is really chaotic like I described.
So I want to know the official rules intended by Microsoft that should be basic for every developer. But I didnt find anything in the docs.

How to style a WPF AutoCompleteBox?

Probably a really simple mistake, I have downloaded the WPF toolkit and placed an AutoCompleteBox on my window. How can I create a style for this control? I have tried to follow msdn but no luck so far...
http://msdn.microsoft.com/en-us/library/dd728668(v=vs.95).aspx
On my window I have:
<Controls:AutoCompleteBox style="{StaticResource acInput}"/>
In my styles I have the following:
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:input="clr-namespace:System.Windows.Controls.Input"
xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows">
<Style x:Key="acInput" TargetType="input:AutoCompleteBox">
<Setter Property="FontFamily" Value="Segoe UI" />
</Style>
</ResourceDictionary>
But I have the error:
The name "AutoCompleteBox" does not exist in the namespace "clrnamespace:System.Windows.Controls.Input".

Add the following namespace reference:
xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Input.Toolkit"

Solved it:
Simply changed TargetType to "Controls:AutoCompleteBox"
<Style x:Key="acInput" TargetType="Controls:AutoCompleteBox">
<Setter Property="FontFamily" Value="Segoe UI" />
</Style>

Using usercontrols with static resources from external assembly

It sounds very simple and it's killing me!
I'm trying to use one usercontrol with styles from a ResourceDictionary of an external assembly, but I get an exception at runtime.
Here is how to reproduce:
Create a silverlight class library called MyControls.dll
Create an usercontrol called SuperControl:
<UserControl.Resources>
<ResourceDictionary Source="MyControls;component/Styles.xaml" x:Key="Styles" />
</UserControl.Resources>
<Grid x:Name="LayoutRoot" Background="White">
<TextBlock Style="{StaticResource MyStyle}" Text="Hello"/>
</Grid>
Create a Styles.xaml ResourceDictionary and add:
<Style x:Key="MyStyle" TargetType="TextBlock">
<Setter Property="FontSize" Value="15"/>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="TextWrapping" Value="Wrap"/>
<Setter Property="Margin" Value="0,15,0,4"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
</Style>
Create a Silverlight Application Called SL and add Mycontrols as reference
In MainPage.xaml Grid, add:
<MyControls:SuperControl />
It will compile, but running the application you get "Failed to assign to property 'System.Windows.ResourceDictionary.Source'. [Line: 10 Position: 36]"
I added this to the application's App.xaml
<ResourceDictionary Source="/MyControls;component/Styles.xaml" />
Same error... :(
Any thoughts?

Step 2.
You forgot /.
Source="MyControls;component/Styles.xaml"
Write
Source="/MyControls;component/Styles.xaml"

BasedOn property not working with ListView

When I use the following code it works because I am using a ListBox
<UserControl.Resources>
<Style BasedOn="{StaticResource {x:Type ListBox}}" TargetType="{x:Type ListBox}">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Background" Value="Transparent" />
</Style>
</UserControl.Resources>
But when I use the following code to a ListView I get an warning/exception
<UserControl.Resources>
<Style BasedOn="{StaticResource {x:Type ListView}}" TargetType="{x:Type ListView}">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Background" Value="Transparent" />
</Style>
</UserControl.Resources>
"StaticResource reference 'System.Windows.Controls.ListView' was not found."
Why and how to solve it? I want the functionality of a ListView.

Try this one:
<Style BasedOn="{StaticResource {x:Type ListBox}}" TargetType="{x:Type ListView}">

A ListView does not handle presentation, it delegates this to its View property, which is usually a GridView. Try setting the style using the GridView type as key.

I'm having the same problem. my scenario is little complicated: app1 references lib1 and lib2, lib1 defines the listview style, lib2 defines a user control containing a listview and has no idea about the listview style. app1 adds the resource dictionary:
in lib2, I define list view like this:
at design time, I got the error:
StaticResource reference 'System.Windows.Controls.ListView' was not found.
but at runtime, it works well.
I guess this is a bug of VS2008.
I tried it on VS2010 which does not have this design time error.