/// <summary>
/// Bind two objects implementing INotifyPropertyChanged over given properties
/// </summary>
/// <param name="source">source object</param>
/// <param name="sourcePropertyName">source property name</param>
/// <param name="target">target object</param>
/// <param name="targetPropertyName">target property name</param>
/// <param name="bindmode">binding mode, e.g. BindingMode.TwoWay</param>
public static void BindProperties(INotifyPropertyChanged source, string sourcePropertyName, INotifyPropertyChanged target, string targetPropertyName, BindingMode bindMode = BindingMode.TwoWay)
{
switch (bindMode)
{
case BindingMode.OneTime:
target.SetProperty(targetPropertyName, source.GetProperty(sourcePropertyName)); //just set value once
break;
case BindingMode.OneWay:
source.PropertyChanged += (s, e) => { if (e.PropertyName == sourcePropertyName)
{
target.SetProperty(targetPropertyName, source.GetProperty(sourcePropertyName));
}
}; //bind forward...
BindProperties(source, sourcePropertyName, target, targetPropertyName, BindingMode.OneTime); //...then set value (target may have looped back to us and changed our value, in that case we read that latest value from source and set to target)
break;
case BindingMode.TwoWay:
target.PropertyChanged += (s, e) => { if (e.PropertyName == targetPropertyName)
{
source.SetProperty(sourcePropertyName, target.GetProperty(targetPropertyName));
}
}; //reverse bind
BindProperties(source, sourcePropertyName, target, targetPropertyName, BindingMode.OneWay); //bind forward and then set value
break;
default:
throw new NotSupportedException("Unsupported binding mode");
}
}
public static void SetProperty <T>(this INotifyPropertyChanged source,
Expression <Func <T> > propExpr,
ref T propertyValueHolder,
T value) where T : class
{
source.SetProperty(propExpr, ref propertyValueHolder, value, () => { });
}
