/// <summary>
/// Контрол отображения контента по условию
/// </summary>
[ContentProperty("ConditionalContent")]
public partial class IfControl : UserControl
{
public static readonly DependencyProperty ConditionProperty
= DependencyProperty.Register(
"Condition",
typeof(bool),
typeof(IfControl),
new PropertyMetadata(OnConditionChangedCallback)
);
public static readonly DependencyProperty ConditionalContentProperty =
DependencyProperty.Register(
"ConditionalContent",
typeof(object),
typeof(IfControl),
new PropertyMetadata(null, OnConditionChangedCallback)
);
public bool Condition
{
get { return (bool)GetValue(ConditionProperty); }
set { SetValue(ConditionProperty, value); }
}
public object ConditionalContent
{
get { return (object)GetValue(ConditionalContentProperty); }
set { SetValue(ConditionalContentProperty, value); }
}
public IfControl()
{
InitializeComponent();
}
private void OnLoad(object sender, RoutedEventArgs e)
{
update();
}
private static void OnConditionChangedCallback(
DependencyObject sender,
DependencyPropertyChangedEventArgs e)
{
if (sender is IfControl s)
{
s.update();
}
}
private void update()
{
Content = Condition ? ConditionalContent : null;
}
} | <tools:IfControl
Condition="{Binding IsType1.Data}">
<TextBox Text="Type1"></TextBox>
</tools:IfControl> |