如何通过 C# 代码更改自定义 WPF 控件中的 BitmapEffect

发布于 2024-08-15 11:52:34 字数 1037 浏览 8 评论 0原文

我有一个自定义控件类型，例如： ; ... 和 Grid.BitmapEffect 属性。如何通过 C# 代码（例如在事件上）更改此控件（网格）中的 BitmapEffetc？

代码示例 - 自定义控件的一部分：

[...]
<Grid Background="#FFE5AA">
    <Grid.RowDefinitions>
        <RowDefinition Height="62*"/>            
        <RowDefinition Height="15*"/>
        <RowDefinition Height="23*"/>
    </Grid.RowDefinitions>

    <Grid.BitmapEffect>
        <OuterGlowBitmapEffect GlowColor="#459E5A" GlowSize="13" Noise="0" Opacity="0.9" />
    </Grid.BitmapEffect>

    <Border Grid.Column="0" Grid.Row="0" Grid.RowSpan="3" BorderBrush="#F5B903" BorderThickness="1,1,1,1" >
    </Border>
[...]

然后在 Window.xaml 中：

<controls:MyControl Name="Control1" Cursor="Hand" MouseDown="Control1_MouseDown" />

然后在 C# 中：

private void Control1_MouseDown(object sender, MouseButtonEventArgs e)
{
    //there i want to change Control1.BitmapEffect
}

原文

I have a custom control type like: <Grid> ... </Grid> and Grid.BitmapEffect property. How can I change BitmapEffetc in this Control (Grid) via C# code (e.g. on event)?

Code sample - part of custom control:

[...]
<Grid Background="#FFE5AA">
    <Grid.RowDefinitions>
        <RowDefinition Height="62*"/>            
        <RowDefinition Height="15*"/>
        <RowDefinition Height="23*"/>
    </Grid.RowDefinitions>

    <Grid.BitmapEffect>
        <OuterGlowBitmapEffect GlowColor="#459E5A" GlowSize="13" Noise="0" Opacity="0.9" />
    </Grid.BitmapEffect>

    <Border Grid.Column="0" Grid.Row="0" Grid.RowSpan="3" BorderBrush="#F5B903" BorderThickness="1,1,1,1" >
    </Border>
[...]

Then in Window.xaml:

<controls:MyControl Name="Control1" Cursor="Hand" MouseDown="Control1_MouseDown" />

Then in C#:

private void Control1_MouseDown(object sender, MouseButtonEventArgs e)
{
    //there i want to change Control1.BitmapEffect
}

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最冷一天 2024-08-22 11:52:34

myGrid.BitmapEffect = null;

PS：请注意， BitmapEffect 被认为已过时并且应该使用 Effect 。

这是一个基于您的示例的示例，该示例运行得很好（在我的机器上）：只要我在网格内单击，效果就会消失。

XAML：

<Window x:Class="WpfCsApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">

<Grid Background="#FFE5AA" Margin="10" MouseDown="Grid_MouseDown" x:Name="myGrid">
    <Grid.RowDefinitions>
        <RowDefinition Height="62*"/>
        <RowDefinition Height="15*"/>
        <RowDefinition Height="23*"/>
    </Grid.RowDefinitions>
    <Grid.BitmapEffect>
        <OuterGlowBitmapEffect GlowColor="#459E5A" GlowSize="13" Noise="0" Opacity="0.9" />
    </Grid.BitmapEffect>
    <Border Grid.Column="0" Grid.Row="0" Grid.RowSpan="3" BorderBrush="#F5B903" BorderThickness="1,1,1,1" >
        <TextBlock>Test</TextBlock>
    </Border>
</Grid>
</Window>

代码隐藏：

public partial class Window1 : Window {
    public Window1() {
        InitializeComponent();
    }

    private void Grid_MouseDown(object sender, MouseButtonEventArgs e) {
        myGrid.BitmapEffect = null;
    }
}

在您的示例中，您编写：//我想更改 Control1.BitmapEffect。请注意，您需要更改 Grid 的 BitmapEffect，而不是 Control1 的 BitmapEffect。

myGrid.BitmapEffect = null;

PS: Note that BitmapEffect is considered obsolete and that Effect should be used instead.

Here's an example based on your sample which works perfectly fine (here on my machine): As soon as I click within the Grid, the effect disappears.

XAML:

<Window x:Class="WpfCsApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">

<Grid Background="#FFE5AA" Margin="10" MouseDown="Grid_MouseDown" x:Name="myGrid">
    <Grid.RowDefinitions>
        <RowDefinition Height="62*"/>
        <RowDefinition Height="15*"/>
        <RowDefinition Height="23*"/>
    </Grid.RowDefinitions>
    <Grid.BitmapEffect>
        <OuterGlowBitmapEffect GlowColor="#459E5A" GlowSize="13" Noise="0" Opacity="0.9" />
    </Grid.BitmapEffect>
    <Border Grid.Column="0" Grid.Row="0" Grid.RowSpan="3" BorderBrush="#F5B903" BorderThickness="1,1,1,1" >
        <TextBlock>Test</TextBlock>
    </Border>
</Grid>
</Window>

Codebehind:

public partial class Window1 : Window {
    public Window1() {
        InitializeComponent();
    }

    private void Grid_MouseDown(object sender, MouseButtonEventArgs e) {
        myGrid.BitmapEffect = null;
    }
}

In your example you write: //there i want to change Control1.BitmapEffect. Note that you need to change the BitmapEffect of the Grid, not the BitmapEffect of Control1.

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