c# - 以编程方式创建带有图像的按钮

Question

在 XAML 中很容易定义带有图像的按钮:

<Button x:Name="btnSound"
        Click="SoundButton"
        Height="40"
        HorizontalAlignment="Left" 
        VerticalAlignment="Bottom" Margin="20,0">
    <Image x:Name="speakerImg" Source="/png/btn_speak_i.png" />
</Button>

我想在 c# 中这样做:

// Prepare two BitmapImages
BitmapImage SoundDisable = new BitmapImage(new Uri("ms-appx:///png/btn_speak_i.png", 
    UriKind.RelativeOrAbsolute));
BitmapImage SoundEnable = new BitmapImage(new Uri("ms-appx:///png/btn_speak.png", 
    UriKind.RelativeOrAbsolute));

// Define and Load Button
btnSound = new Button();
btnSound.HorizontalAlignment = HorizontalAlignment.Left;
btnSound.VerticalAlignment = VerticalAlignment.Bottom;
Thickness margin = new Thickness(0,00,20,0);
btnSound.Margin = margin;
btnSound.Click += new RoutedEventHandler(btnSound_Click);
btnSound.IsEnabled = false;
topBar.Children.Add(btnSound);

我找不到向按钮添加图像的方法。有点像

btnSound.Content = SoundDisable; 

不工作。它仅显示带有按钮内图像类型的文本。在 XAML 版本中，我将图像设置为

speakerImg.Source = SoundDisable;

因为图像是用 x:Name 定义的。

如何以编程方式将命名图像添加到我的按钮？

Answer 1

简单:添加一个Image，并将图像Source设置为您的BitmapImage。

// Prepare two BitmapImages
BitmapImage SoundDisable = new BitmapImage(new Uri("ms-appx:///png/btn_speak_i.png", 
    UriKind.RelativeOrAbsolute));
BitmapImage SoundEnable = new BitmapImage(new Uri("ms-appx:///png/btn_speak.png", 
    UriKind.RelativeOrAbsolute));

// Define and Load Button
btnSound = new Button();
btnSound.HorizontalAlignment = HorizontalAlignment.Left;
btnSound.VerticalAlignment = VerticalAlignment.Bottom;
Thickness margin = new Thickness(0,00,20,0);
btnSound.Margin = margin;
btnSound.Click += new RoutedEventHandler(btnSound_Click);
btnSound.IsEnabled = false;

<strong>var image = new Image();
image.Source = SoundDisable;
btnSound.Content = image;</strong>

topBar.Children.Add(btnSound);

To change the image:

((Image)btnSound.Content).Source = SoundEnable;