我的方法继承了StackPanel。

用法:

<Controls:ItemSpacer Grid.Row="2" Orientation="Horizontal" Height="30" CellPadding="15,0">
    <Label>Test 1</Label>
    <Label>Test 2</Label>
    <Label>Test 3</Label>
</Controls:ItemSpacer>

所需要的是以下简短的类:

using System.Windows;
using System.Windows.Controls;
using System;

namespace Controls
{
    public class ItemSpacer : StackPanel
    {
        public static DependencyProperty CellPaddingProperty = DependencyProperty.Register("CellPadding", typeof(Thickness), typeof(ItemSpacer), new FrameworkPropertyMetadata(default(Thickness), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnCellPaddingChanged));
        public Thickness CellPadding
        {
            get
            {
                return (Thickness)GetValue(CellPaddingProperty);
            }
            set
            {
                SetValue(CellPaddingProperty, value);
            }
        }
        private static void OnCellPaddingChanged(DependencyObject Object, DependencyPropertyChangedEventArgs e)
        {
            ((ItemSpacer)Object).SetPadding();
        }

        private void SetPadding()
        {
            foreach (UIElement Element in Children)
            {
                (Element as FrameworkElement).Margin = this.CellPadding;
            }
        }

        public ItemSpacer()
        {
            this.LayoutUpdated += PART_Host_LayoutUpdated;
        }

        private void PART_Host_LayoutUpdated(object sender, System.EventArgs e)
        {
            this.SetPadding();
        }
    }
}

网格。列空间网格。StackPanel行空间。间距现在在UWP预览，所有将允许更好地完成这里的要求。

这些属性目前只与Windows 10秋季创作者更新内部SDK可用，但应该使它到最后位!

UniformGrid可能在Silverlight中无法使用，但有人已经从WPF中移植了它。http://www.jeff.wilcox.name/2009/01/uniform-grid/

按照Sergey的建议，你可以定义和重用一个完整的Style(使用各种属性设置，包括Margin)，而不仅仅是一个Thickness对象:

<Style x:Key="MyStyle" TargetType="SomeItemType">
  <Setter Property="Margin" Value="0,5,0,5" />
  ...
</Style>

...

  <StackPanel>
    <StackPanel.Resources>
      <Style TargetType="SomeItemType" BasedOn="{StaticResource MyStyle}" />
    </StackPanel.Resources>
  ...
  </StackPanel>

注意，这里的技巧是对隐式样式使用样式继承，从一些外部(可能是从外部XAML文件合并的)资源字典中的样式继承。

Sidenote:

首先，我天真地试图使用隐式样式将控件的style属性设置为外部style资源(用键“MyStyle”定义):

<StackPanel>
  <StackPanel.Resources>
    <Style TargetType="SomeItemType">
      <Setter Property="Style" Value={StaticResource MyStyle}" />
    </Style>
  </StackPanel.Resources>
</StackPanel>

这导致VisualStudio 2010立即关闭灾难性失败错误(HRESULT: 0x8000FFFF (E_UNEXPECTED))，描述在https://connect.microsoft.com/VisualStudio/feedback/details/753211/xaml-editor-window-fails-with-catastrophic-failure-when-a-style-tries-to-set-style-property#

我改进了埃拉德·卡茨的回答。

为MarginSetter添加LastItemMargin属性以专门处理最后一项 “添加间距”附加属性具有“垂直”和“水平”属性，用于在垂直和水平列表中的项之间添加间距，并消除列表末尾的任何尾距

源代码在主旨。

例子:

<StackPanel Orientation="Horizontal" foo:Spacing.Horizontal="5">
  <Button>Button 1</Button>
  <Button>Button 2</Button>
</StackPanel>

<StackPanel Orientation="Vertical" foo:Spacing.Vertical="5">
  <Button>Button 1</Button>
  <Button>Button 2</Button>
</StackPanel>

<!-- Same as vertical example above -->
<StackPanel Orientation="Vertical" foo:MarginSetter.Margin="0 0 0 5" foo:MarginSetter.LastItemMargin="0">
  <Button>Button 1</Button>
  <Button>Button 2</Button>
</StackPanel>

我的方法继承了StackPanel。

用法:

<Controls:ItemSpacer Grid.Row="2" Orientation="Horizontal" Height="30" CellPadding="15,0">
    <Label>Test 1</Label>
    <Label>Test 2</Label>
    <Label>Test 3</Label>
</Controls:ItemSpacer>

所需要的是以下简短的类:

using System.Windows;
using System.Windows.Controls;
using System;

namespace Controls
{
    public class ItemSpacer : StackPanel
    {
        public static DependencyProperty CellPaddingProperty = DependencyProperty.Register("CellPadding", typeof(Thickness), typeof(ItemSpacer), new FrameworkPropertyMetadata(default(Thickness), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnCellPaddingChanged));
        public Thickness CellPadding
        {
            get
            {
                return (Thickness)GetValue(CellPaddingProperty);
            }
            set
            {
                SetValue(CellPaddingProperty, value);
            }
        }
        private static void OnCellPaddingChanged(DependencyObject Object, DependencyPropertyChangedEventArgs e)
        {
            ((ItemSpacer)Object).SetPadding();
        }

        private void SetPadding()
        {
            foreach (UIElement Element in Children)
            {
                (Element as FrameworkElement).Margin = this.CellPadding;
            }
        }

        public ItemSpacer()
        {
            this.LayoutUpdated += PART_Host_LayoutUpdated;
        }

        private void PART_Host_LayoutUpdated(object sender, System.EventArgs e)
        {
            this.SetPadding();
        }
    }
}