#pragma warning disable 1591
public override object ProvideValue(IServiceProvider serviceProvider)
{
try
{
var target = serviceProvider.GetService(typeof(IProvideValueTarget)) as IProvideValueTarget;
if (!(target.TargetObject is DependencyObject)) return this;
var element = target.TargetObject as FrameworkElement;
var targetProperty = target.TargetProperty as DependencyProperty;
if (element == null || targetProperty == null) return null;
var viewModel = GetDataContext(element);
if (viewModel == null)
{
element.DataContextChanged += (s, e) =>
{
viewModel = e.NewValue;
var command = new CommandForMethod(viewModel, _name, CanExecuteWhen, ParameterConverter);
element.SetValue(targetProperty, command);
};
}
else
{
var command = new CommandForMethod(viewModel, _name, CanExecuteWhen, ParameterConverter);
return command;
}
}
catch { }
return null;
}
#pragma warning disable 1591
public override object ProvideValue(IServiceProvider serviceProvider)
{
try
{
var target = serviceProvider.GetService(typeof(IProvideValueTarget)) as IProvideValueTarget;
if (!(target.TargetObject is DependencyObject))
{
return(this);
}
var element = target.TargetObject as FrameworkElement;
var targetProperty = target.TargetProperty as DependencyProperty;
if (element == null || targetProperty == null)
{
return(null);
}
var viewModel = GetDataContext(element);
if (viewModel == null)
{
element.DataContextChanged += (s, e) =>
{
viewModel = e.NewValue;
var command = new CommandForMethod(viewModel, _name, CanExecuteWhen, ParameterConverter);
element.SetValue(targetProperty, command);
};
}
else
{
var command = new CommandForMethod(viewModel, _name, CanExecuteWhen, ParameterConverter);
return(command);
}
}
catch { }
return(null);
}