Bạn có thể tạo một điều khiển tùy chỉnh kế thừa từ lớp Nút. Mã này sẽ có thể tái sử dụng nhiều hơn, vui lòng xem bài đăng trên blog sau để biết thêm chi tiết: WPF - tạo nút tùy chỉnh bằng hình ảnh (ImageButton)
Sử dụng điều khiển này:
<local:ImageButton Width="200" Height="50" Content="Click Me!"
ImageSource="ok.png" ImageLocation="Left" ImageWidth="20" ImageHeight="25" />
Tệp ImageButton.cs:
public class ImageButton : Button
{
static ImageButton()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(ImageButton), new FrameworkPropertyMetadata(typeof(ImageButton)));
}
public ImageButton()
{
this.SetCurrentValue(ImageButton.ImageLocationProperty, WpfImageButton.ImageLocation.Left);
}
public int ImageWidth
{
get { return (int)GetValue(ImageWidthProperty); }
set { SetValue(ImageWidthProperty, value); }
}
public static readonly DependencyProperty ImageWidthProperty =
DependencyProperty.Register("ImageWidth", typeof(int), typeof(ImageButton), new PropertyMetadata(30));
public int ImageHeight
{
get { return (int)GetValue(ImageHeightProperty); }
set { SetValue(ImageHeightProperty, value); }
}
public static readonly DependencyProperty ImageHeightProperty =
DependencyProperty.Register("ImageHeight", typeof(int), typeof(ImageButton), new PropertyMetadata(30));
public ImageLocation? ImageLocation
{
get { return (ImageLocation)GetValue(ImageLocationProperty); }
set { SetValue(ImageLocationProperty, value); }
}
public static readonly DependencyProperty ImageLocationProperty =
DependencyProperty.Register("ImageLocation", typeof(ImageLocation?), typeof(ImageButton), new PropertyMetadata(null, PropertyChangedCallback));
private static void PropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var imageButton = (ImageButton)d;
var newLocation = (ImageLocation?) e.NewValue ?? WpfImageButton.ImageLocation.Left;
switch (newLocation)
{
case WpfImageButton.ImageLocation.Left:
imageButton.SetCurrentValue(ImageButton.RowIndexProperty, 1);
imageButton.SetCurrentValue(ImageButton.ColumnIndexProperty, 0);
break;
case WpfImageButton.ImageLocation.Top:
imageButton.SetCurrentValue(ImageButton.RowIndexProperty, 0);
imageButton.SetCurrentValue(ImageButton.ColumnIndexProperty, 1);
break;
case WpfImageButton.ImageLocation.Right:
imageButton.SetCurrentValue(ImageButton.RowIndexProperty, 1);
imageButton.SetCurrentValue(ImageButton.ColumnIndexProperty, 2);
break;
case WpfImageButton.ImageLocation.Bottom:
imageButton.SetCurrentValue(ImageButton.RowIndexProperty, 2);
imageButton.SetCurrentValue(ImageButton.ColumnIndexProperty, 1);
break;
case WpfImageButton.ImageLocation.Center:
imageButton.SetCurrentValue(ImageButton.RowIndexProperty, 1);
imageButton.SetCurrentValue(ImageButton.ColumnIndexProperty, 1);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public ImageSource ImageSource
{
get { return (ImageSource)GetValue(ImageSourceProperty); }
set { SetValue(ImageSourceProperty, value); }
}
public static readonly DependencyProperty ImageSourceProperty =
DependencyProperty.Register("ImageSource", typeof(ImageSource), typeof(ImageButton), new PropertyMetadata(null));
public int RowIndex
{
get { return (int)GetValue(RowIndexProperty); }
set { SetValue(RowIndexProperty, value); }
}
public static readonly DependencyProperty RowIndexProperty =
DependencyProperty.Register("RowIndex", typeof(int), typeof(ImageButton), new PropertyMetadata(0));
public int ColumnIndex
{
get { return (int)GetValue(ColumnIndexProperty); }
set { SetValue(ColumnIndexProperty, value); }
}
public static readonly DependencyProperty ColumnIndexProperty =
DependencyProperty.Register("ColumnIndex", typeof(int), typeof(ImageButton), new PropertyMetadata(0));
}
public enum ImageLocation
{
Left,
Top,
Right,
Bottom,
Center
}
Tệp Generic.xaml:
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfImageButton">
<Style TargetType="{x:Type local:ImageButton}" BasedOn="{StaticResource {x:Type Button}}">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Image Source="{Binding ImageSource, RelativeSource={RelativeSource AncestorType=local:ImageButton}}"
Width="{Binding ImageWidth, RelativeSource={RelativeSource AncestorType=local:ImageButton}}"
Height="{Binding ImageHeight, RelativeSource={RelativeSource AncestorType=local:ImageButton}}"
Grid.Row="{Binding RowIndex, RelativeSource={RelativeSource AncestorType=local:ImageButton}}"
Grid.Column="{Binding ColumnIndex, RelativeSource={RelativeSource AncestorType=local:ImageButton}}"
VerticalAlignment="Center" HorizontalAlignment="Center"></Image>
<ContentPresenter Grid.Row="1" Grid.Column="1" Content="{TemplateBinding Content}"
VerticalAlignment="Center" HorizontalAlignment="Center"></ContentPresenter>
</Grid>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>