求助如何使用WPF控件自适应宽度
想实现如WIN7下的任务栏效果，截图：

当 只有一两个 控件时 ：


当出现很多控件时自动调整宽度如下图：




[解决办法]
WPF在任务栏里不是自适应宽度的吗
[解决办法]
WPF在任务栏属性里设置
[解决办法]
恩，自己写Layout，override measure/arrange
[解决办法]
大概写了一下，如果比Panel尺寸大则正常显示，否则根据数量均分

C# code

public class SampleLayout : Panel {    public SampleLayout() {        this.Background = Brushes.Yellow;    }    protected override Size MeasureOverride(Size availableSize) {        double height = 0.0;        foreach (UIElement each in InternalChildren) {            each.Measure(availableSize);            height = Math.Max(height, each.DesiredSize.Height);        }        return new Size(availableSize.Width, height);    }    protected override Size ArrangeOverride(Size finalSize) {        var desiredWidth = InternalChildren.Cast<UIElement>().Sum(p => p.DesiredSize.Width);        if (desiredWidth <= finalSize.Width) {            var nextChildLeft = 0.0;            foreach (UIElement each in InternalChildren) {                each.Arrange(new Rect(new Point(nextChildLeft, 0), each.DesiredSize));                nextChildLeft += each.DesiredSize.Width;            }        } else {            var nextChildLeft = 0.0;            var avaWidth = finalSize.Width / InternalChildren.Count;            foreach (UIElement each in InternalChildren) {                each.Arrange(new Rect(new Point(nextChildLeft, 0), new Size(avaWidth, each.DesiredSize.Height)));                                    nextChildLeft += avaWidth;            }        }        return finalSize;    }}
[解决办法]
写反了，如果控件需要的Width大于Panel则均分，否则按期望尺寸显示...
[解决办法]
根本就不需要计算那么麻烦.
放一个grid,然后,有一个元素就增加一列,设置列的最大宽度为你要的数值,然后再设置列宽为*.
这样的话，你的列加的越多，那么每一列酒会压缩的越窄，列越少，则每一列都不会超过最大宽度。
C# code
<Grid Width="200" ShowGridLines="True">        <Grid.ColumnDefinitions>            <ColumnDefinition MaxWidth="50" Width="*"/>            <ColumnDefinition MaxWidth="50" Width="*"/>            <ColumnDefinition MaxWidth="50" Width="*"/>            <ColumnDefinition MaxWidth="50" Width="*"/>            <ColumnDefinition MaxWidth="50" Width="*"/>            <ColumnDefinition MaxWidth="50" Width="*"/>            <ColumnDefinition MaxWidth="50" Width="*"/>        </Grid.ColumnDefinitions>        <Label Grid.Column="0">aaaaaaaaaaaaaa</Label>        <Label Grid.Column="1">bbbbbbbbbbbb</Label>        <Label Grid.Column="2">cccccccccccccc</Label>        <Label Grid.Column="3">dddddddddddddd</Label>        <Label Grid.Column="4">eeeeeeeeeeeeee</Label>        <Label Grid.Column="5">fffffffffffffff</Label>        <Label Grid.Column="6">ggggggggggggggg</Label>    </Grid>