Вам необходимо представить свойства команд кнопок как свойства зависимостей.
Скажем, у вас есть пользовательский элемент управления (который отличается от UserControl), определенный следующим образом:
<Style TargetType="{x:Type custom:MyButtonedCtrl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type custom:MyButtonedCtrl}">
<Border BorderThickness="4"
CornerRadius="2"
BorderBrush="Black">
<StackPanel>
<Button Command="{TemplateBinding CommandForFirstButton}"/>
<Button Command="{TemplateBinding CommandForSecondButton}"/>
</StackPanel>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Затем в вашемпозади кода вы должны предоставить 2 свойства зависимости: CommandForFirstButton
и CommandForSecondButton
(типа ICommand):
public class MyButtonedCtrl : ContentControl
{
static MyButtonedCtrl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(MyButtonedCtrl), new FrameworkPropertyMetadata(typeof(MyButtonedCtrl)));
}
#region CommandForFirstButton
public ICommand CommandForFirstButton
{
get { return (ICommand)GetValue(CommandForFirstButtonProperty); }
set { SetValue(CommandForFirstButtonProperty, value); }
}
// Using a DependencyProperty as the backing store for CommandForFirstButton. This enables animation, styling, binding, etc...
public static readonly DependencyProperty CommandForFirstButtonProperty =
DependencyProperty.Register("CommandForFirstButton", typeof(ICommand), typeof(MyButtonedCtrl), new UIPropertyMetadata(null));
#endregion
#region CommandForSecondButton
public ICommand CommandForSecondButton
{
get { return (ICommand)GetValue(CommandForSecondButtonProperty); }
set { SetValue(CommandForSecondButtonProperty, value); }
}
// Using a DependencyProperty as the backing store for CommandForSecondButton. This enables animation, styling, binding, etc...
public static readonly DependencyProperty CommandForSecondButtonProperty =
DependencyProperty.Register("CommandForSecondButton", typeof(ICommand), typeof(MyButtonedCtrl), new UIPropertyMetadata(null));
#endregion
}
И всякий раз, когда вы хотите использовать свой элемент управления:
<custom:MyButtonedCtrl CommandForFirstButton="{Binding MyCommand}"
CommandForSecondButton="{Binding MyOtherCommand}"/>
РЕДАКТИРОВАТЬ: Для UserControl:
Объявлен так:
<UserControl x:Class="MyApp.Infrastructure.CustomControls.MyButtonedCtrl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Name="buttonedCtrl">
<Grid>
<Border BorderThickness="4"
CornerRadius="2"
BorderBrush="Black">
<StackPanel>
<Button Command="{Binding CommandForFirstButton, ElementName=buttonedCtrl}"/>
<Button Command="{Binding CommandForSecondButton, ElementName=buttonedCtrl}"/>
</StackPanel>
</Border>
</Grid>
</UserControl>
Код-позади будет:
/// <summary>
/// Interaction logic for MyButtonedCtrl.xaml
/// </summary>
public partial class MyButtonedCtrl : UserControl
{
public MyButtonedCtrl()
{
InitializeComponent();
}
#region CommandForFirstButton
public ICommand CommandForFirstButton
{
get { return (ICommand)GetValue(CommandForFirstButtonProperty); }
set { SetValue(CommandForFirstButtonProperty, value); }
}
// Using a DependencyProperty as the backing store for CommandForFirstButton. This enables animation, styling, binding, etc...
public static readonly DependencyProperty CommandForFirstButtonProperty =
DependencyProperty.Register("CommandForFirstButton", typeof(ICommand), typeof(MyButtonedCtrl), new UIPropertyMetadata(null));
#endregion
#region CommandForSecondButton
public ICommand CommandForSecondButton
{
get { return (ICommand)GetValue(CommandForSecondButtonProperty); }
set { SetValue(CommandForSecondButtonProperty, value); }
}
// Using a DependencyProperty as the backing store for CommandForSecondButton. This enables animation, styling, binding, etc...
public static readonly DependencyProperty CommandForSecondButtonProperty =
DependencyProperty.Register("CommandForSecondButton", typeof(ICommand), typeof(MyButtonedCtrl), new UIPropertyMetadata(null));
#endregion
}
ИВы используете его так же.
Надеюсь, это поможет!