我实现了一个自定义控件,我需要执行一些绑定。
public class SomeControl : Control
{
internal static DependencyProperty AProperty;
internal static DependencyProperty BProperty;
internal static DependencyProperty CProperty;
static AnimationControl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(AnimationControl), new FrameworkPropertyMetadata(typeof(AnimationControl)));
AProperty = DependencyProperty.Register("A", typeof(double), typeof(SomeControl));
BProperty = DependencyProperty.Register("B", typeof(Boolean), typeof(SomeControl));
CProperty = DependencyProperty.Register("C", typeof(String), typeof(SomeControl));
}
public double A
{
get { return (double)this.GetValue(AProperty); }
set { SetValue(AProperty, value); }
}
public Boolean B
{
get { return (Boolean)this.GetValue(BProperty); }
set { SetValue(BProperty, value); }
}
public String C
{
get { return (String)this.GetValue(CProperty); }
set { SetValue(CProperty, value); }
}
}
MainWindow.xaml:
<TextBox TextChanged="speedsBoxChanged" Name="speedsBox" Text="1, 2, 3, 4, 5" Grid.Row="0" Grid.Column="2" Margin="2" />
<Slider Name="slider" Grid.Row="0" Grid.Column="3" Margin="2" Minimum="20" Maximum="750" />
<local:AnimationControl
A="{Binding A}"
B="{Binding B}"
C="{Binding C}" />
<CheckBox Name="versionCheckBox" Click="VersionChanged" IsChecked="False" VerticalAlignment="Center"/>
主窗口.cs:
public event PropertyChangedEventHandler PropertyChanged;
public double A
{
get { return lri.Speed; }
set
{
lri.Speed = value;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs("A"));
}
}
}
public string C
{
get { return speedsBox.Text; }
set
{
speedsBox.Text = value;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs("B"));
}
}
}
public Boolean B
{
get { return (Boolean)versionCheckBox.IsChecked; }
set
{
versionCheckBox.IsChecked = (Boolean)value;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs("C"));
}
}
}
但是没有任何效果,为什么?我一直在尝试并试图弄清楚这一点,但仍然一无所获。基本上,我想通过更改滑块值来更新动画速度(lri.Speed),从 TextBox 更新 C 属性并从复选框更新 B。