C# 4 and .NET 4

styles and resources ❘ 1007
}
{
new GradientStop(Colors.White, 0.0),
new GradientStop(Colors.Yellow, 0.14),
new GradientStop(Colors.YellowGreen, 0.7)
};
myContainer.Resources.Add("MyGradientBrush", brush);
code snippet StylesAndResources/ResourceDemo.xaml .cs
When running the application, the resource changes dynamically by clicking the Change Resource button.
Using the button with dynamic resource gets the dynamically created resource; the button with static
resource looks the same as before.
DynamicResource requires more performance than StaticResource because the
resource is always loaded when needed. Use DynamicResource only with resources
where you expect changes during runtime.
resource dictionaries
If the same resources are used with different applications, it ’ s useful to put the resource in a resource
dictionary. Using resource dictionaries, the fi les can be shared between multiple applications, or the
resource dictionary can be put into an assembly and shared by the applications.
To share a resource dictionary in an assembly, create a library. A resource dictionary fi le, here
Dictionary1.xaml , can be added to the assembly. The build action for this fi le must be set to Resource so
that it is added as a resource to the assembly.
Dictionary1.xaml defi nes two resources: LinearGradientBrush with the CyanGradientBrush key, and a
style for a Button that can be referenced with the PinkButtonStyle key:
< ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
< LinearGradientBrush x:Key="CyanGradientBrush" StartPoint="0,0" EndPoint="0.3,1" >
< GradientStop Offset="0.0" Color="LightCyan" / >
< GradientStop Offset="0.14" Color="Cyan" / >
< GradientStop Offset="0.7" Color="DarkCyan" / >
< /LinearGradientBrush >
< Style x:Key="PinkButtonStyle" TargetType="Button" >
< Setter Property="FontSize" Value="22" / >
< Setter Property="Foreground" Value="White" / >
< Setter Property="Background" >
< Setter.Value >
< LinearGradientBrush StartPoint="0,0" EndPoint="0,1" >
< GradientStop Offset="0.0" Color="Pink" / >
< GradientStop Offset="0.3" Color="DeepPink" / >
< GradientStop Offset="0.9" Color="DarkOrchid" / >
< /LinearGradientBrush >
< /Setter.Value >
< /Setter >
< /Style >
< /ResourceDictionary >
code snippet ResourcesLib/Dictionary1.xaml
With the target project, the library needs to be referenced, and the resource dictionary added to the dictionaries.
You can use multiple resource dictionary fi les that can be added with the MergedDictionaries property of the
ResourceDictionary . A list of resource dictionaries can be added to the merged dictionaries. With the Source
property of ResourceDictionary , a dictionary can be referenced. For the reference, the pack URI syntax is
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