将元素绑定到本地数据

Question

我有一个类"BoolValue"在那里我声明一个bool值，并将其转换为依赖属性(希望我已经做了正确的)现在在xaml中，我有一个复选框想要根据bool值选中/取消选中。我附上了整个代码，请帮忙。

<StackPanel Height="287" HorizontalAlignment="Left" Margin="78,65,0,0" Name="stackPanel1" VerticalAlignment="Top" Width="309" DataContext="xyz" >
  <CheckBox Content="" Height="71" Name="checkBox1" IsChecked="{Binding Path=IsCkecked, Mode=TwoWay}"/>
</StackPanel>

这里是class

public class BoolValue : INotifyPropertyChanged
    {        
        private bool _isCkecked;
        public bool IsCkecked
        {
            get { return _isCkecked; }
            set
            {
                if (value == _isCkecked)
                    return;
                _isCkecked = value;
                RaisePropertyChanged("IsCkecked");
            }
        }
        public event PropertyChangedEventHandler PropertyChanged;
        protected void RaisePropertyChanged(string property)
        {
            PropertyChangedEventArgs args = new PropertyChangedEventArgs(property);
            var handler = this.PropertyChanged;
            //handler(this, args);
            if (handler != null)
            {
                handler(this, args);
            }
        }       
    }

Answer 1

你们的StackPanel的实际DataContext是多少?看起来你正在寻找属性变化，但在不同的DataContext。

如果BoolValue是你的复选框的DataContext，下面应该工作:

public class BoolValue : INotifyPropertyChanged
{ 
    private bool isChecked;
        public bool IsChecked
        {
            get { return isChecked; }
            set
            {
                if (isChecked != value)
                {
                    isChecked = value;
                    NotifyPropertyChanged("IsChecked");
                }
            }
        }

    public event PropertyChangedEventHandler PropertyChanged;
        public void NotifyPropertyChanged(String propertyName)
        {
            // take a copy to prevent thread issues
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
}

XAML:

<CheckBox IsChecked="{Binding IsChecked, Mode=TwoWay}"/>