无法从方法组转换为对象移植 WFP => UWP

Question

对于我一直从事的项目，我正在将一些自定义控件从 WPF 平台移植到 UWP。在 WPF 方面，它是这样实现的：

public static readonly DependencyProperty MaxLengthProperty = DependencyProperty.Register("MaxLength", typeof(int), typeof(HexBox), new PropertyMetadata(MaxLength_PropertyChanged));
public int MaxLength
{
    get { return (int)GetValue(MaxLengthProperty); }
    set { SetValue(MaxLengthProperty, value); }
}
private static void MaxLength_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    HexBox hexControl = (HexBox)d;

    hexControl.txtValue.MaxLength = (int)e.NewValue;
}

MaxLength_PropertyChanged 不带参数使用。当我尝试在 UWP 中做同样的事情时，我收到以下消息：

Argument 1: cannot convert from 'method group' to 'object'

我知道这与不传递参数或使用 () 作为方法调用它们有关。但在 WPF 中，这种行为是隐含的。

有人有想法吗？

Answer 1

试试这个：

public static readonly DependencyProperty MaxLengthProperty = DependencyProperty.Register(
  "MaxLength",
  typeof(int),
  typeof(HexBox),
  new PropertyMetadata(0, new PropertyChangedCallback(MaxLength_PropertyChanged))
);

private static void MaxLength_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    HexBox hexControl = d as HexBox;
    hexControl.txtValue.MaxLength = (int)e.NewValue;
}

无法从方法组转换为对象移植 WFP => UWP

cannot convert from method group to object porting WFP => UWP

c#

wpf

uwp

custom-controls

porting