WPF and Silverlight Learning Notes (16): WPF Resources (Resource) (1)

One, what is the resource

WPF resources are typically used as a simple way to reuse commonly defined objects and values. For example, define a brush object that can be reused, and the background of the button and the fill color of the rectangle use this brush:

1:　<Window　 x:Class="WPFResource.WinBasicResource"
2:　　　 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation& quot;
3:　　　 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4:　　　Title="Basic　Resource"　Height="200"　 Width="300">
5:　　　<Window.Resources>
6:　　　　　<SolidColorBrush　x:Key="myBrush"　 Color="Gold"　/>
7:　　　 </Window.Resources>
8:　　　<StackPanel>
9:　　 　　　<Button　Margin="5"　Content="Sample　 Button"　Background="{StaticResource　myBrush}" 　/>
10:　　　　　<Rectangle　Margin="5"　 Width="100"　Height="100"　Fill=" {StaticResource　myBrush}"　/>
11:　　　 </StackPanel>
12:　</Window>

Resources in WPF are often used as style, style templates, data templates, and so on.

Ii. definition of resources and references in XAML

Resources can be defined in several locations:

Application-level resources: defined in the App.xaml file as a resource that is shared by the entire application

Defined in the App.xaml file:

1:　<Application　 x:Class="WPFResource.App"
2:　　　 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation& quot;
3:　　　 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4:　　　StartupUri="Window1.xaml">
5:　　　 <Application.Resources>
6:　　　　　<SolidColorBrush　 Color="Gold"　x:Key="myGoldBrush"　/>
7:　 　　</Application.Resources>
8:　 </Application>

Use the resource defined in App.xaml in the Applicationresourcedemo.xaml file (form)

1:　<Window　 x:Class="WPFResource.ApplicationResourceDemo"
2:　　　 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation& quot;
3:　　　 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4:　　　Title="Application　Resource　Demo"　 Height="300"　Width="300">
5:　　　 <StackPanel>
6:　　　　　<Button　Margin="5"　 Background="{StaticResource　myGoldBrush}">Sample　 Button</Button>
7:　　　</StackPanel>
8:　 </Window>

Form-level resources: defined as a resource that is shared as a form or page in Windows or pages

1:　<Window　 x:Class="WPFResource.WindowResourceDemo"
2:　　　 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation& quot;
3:　　　 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4:　　　Title="WindowResourceDemo"　Height="300" 　Width="300">
5:　　　<Window.Resources>
6:　　　　　<SolidColorBrush　x:Key="myRedBrush"　 Color="Red"　/>
7:　　　</Window.Resources>
8:　　　<StackPanel>
9:　　　　　<Button　 Margin="5"　Background="{StaticResource　myRedBrush} ">Sample　Button</Button>
10:　　　 </StackPanel>
11:　</Window>