WPF 精修篇 动态资源

Posted lonelyxmas

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了WPF 精修篇 动态资源相关的知识，希望对你有一定的参考价值。

原文:WPF 精修篇 动态资源

动态资源 使用 DynamicResource 关键字

静态 就是 StaticResource

原则上是 能用静态就用静态 动态会让前台界面压力很大~

 

动态资源引用 就是可以在后台改变资源 显示不同的样式  资源是一样的 就看关键字用什么

效果 

技术图片

 

  1.    <Window.Resources>
  2.         <LinearGradientBrush x:Key="RectFill" EndPoint="0.5,1" StartPoint="0.5,0">
  3.             <GradientStop Color="BurlyWood" Offset="0"/>
  4.             <GradientStop Color="White" Offset="1"/>
  5.         </LinearGradientBrush>
  6.     </Window.Resources>
  7.     <Grid>
  8.         <Rectangle Fill="{ DynamicResource RectFill}" HorizontalAlignment="Left" Height="76" Margin="85,70,0,0" Stroke="Black" VerticalAlignment="Top" Width="243">
  9.        
  10.         </Rectangle>
  11.         <RadioButton x:Name="R" Content="R" HorizontalAlignment="Left" Margin="377,70,0,0" VerticalAlignment="Top" Click="R_Click"/>
  12.         <RadioButton x:Name="G" Content="G" HorizontalAlignment="Left" Margin="377,98,0,0" VerticalAlignment="Top" Click="G_Click"/>
  13.         <RadioButton x:Name="B"  Content="B" HorizontalAlignment="Left" Margin="377,130,0,0" VerticalAlignment="Top" Click="B_Click"/>
  14.  
  15.     </Grid>

 

  1.         private void R_Click(object sender, RoutedEventArgs e)
  2.         {
  3.             var bursh = Resources["RectFill"];
  4.             if (bursh is LinearGradientBrush) 
  5.             {
  6.                 LinearGradientBrush Ibursh = (LinearGradientBrush)bursh;
  7.                 Ibursh = new LinearGradientBrush()
  8.                 {
  9.                     GradientStops = new GradientStopCollection() 
  10.                     {
  11.                         new  GradientStop(Colors.BurlyWood,0),
  12.                         new GradientStop(Colors.Red,1)
  13.  
  14.                     }
  15.                 };
  16.                 Resources["RectFill"] = Ibursh;
  17.             }
  18.       
  19.         }
  20.  
  21.         private void G_Click(object sender, RoutedEventArgs e)
  22.         {
  23.             var bursh = Resources["RectFill"];
  24.             if (bursh is LinearGradientBrush)
  25.             {
  26.                 LinearGradientBrush Ibursh = (LinearGradientBrush)bursh;
  27.                 Ibursh = new LinearGradientBrush()
  28.                 {
  29.                     GradientStops = new GradientStopCollection() 
  30.                     {
  31.                         new  GradientStop(Colors.BurlyWood,0),
  32.                         new GradientStop(Colors.Green,1)
  33.  
  34.                     }
  35.                 };
  36.                 Resources["RectFill"] = Ibursh;
  37.             }
  38.    
  39.         }
  40.  
  41.         private void B_Click(object sender, RoutedEventArgs e)
  42.         {
  43.             var bursh = Resources["RectFill"];
  44.             if (bursh is LinearGradientBrush)
  45.             {
  46.                 LinearGradientBrush Ibursh = (LinearGradientBrush)bursh;
  47.                 Ibursh = new LinearGradientBrush()
  48.                 {
  49.                     GradientStops = new GradientStopCollection() 
  50.                     {
  51.                         new  GradientStop(Colors.BurlyWood,0),
  52.                         new GradientStop(Colors.Blue,1)
  53.  
  54.                     }
  55.                 };
  56.                 Resources["RectFill"] = Ibursh;
  57.             }
  58.       
  59.         }

 

 

以上是关于WPF 精修篇 动态资源的主要内容，如果未能解决你的问题，请参考以下文章

WPF 精修篇 管理资源字典

WPF 精修篇 静态资源

WPF 精修篇 全局为处理异常处理

WPF 精修篇 属性触发器

WPF 精修篇 调用Win32Api

WPF 精修篇 Winform 嵌入WPF控件