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我正在使用WPF创建应用程序。其中我实现了IScrollInfo
界面来获取画布的可见区域。我重写方法MeasureOverride(Size availableSize)
获取视野,但我得到的是我无法理解的错误:错误:错误名称'Children'在当前上下文中不存在
protected override Size MeasureOverride(Size availableSize)
{
foreach (UIElement child in Children)
{
child.Measure(availableSize);
resultSize.Width = Math.Max(resultSize.Width,
child.DesiredSize.Width);
resultSize.Height = Math.Max(resultSize.Height,
child.DesiredSize.Height);
extent.Width += child.DesiredSize.Width;
}
resultSize.Width = double.IsPositiveInfinity(availableSize.Width)? resultSize.Width : availableSize.Width;
resultSize.Height = double.IsPositiveInfinity(availableSize.Height)? resultSize.Height : availableSize.Height;
extent.Height = resultSize.Height;
if ((_viewport != resultSize || _extent != extent) && ScrollOwner != null)
{
_viewport = resultSize;
_extent = extent;
ScrollOwner.InvalidateScrollInfo();
}
return resultSize;
}
什么是它的孩子..