WPF - 具有Width =“*”的DataGrid列，但适合内容的MinWidth [英] WPF - DataGrid Column with Width="*", but MinWidth to Fit Contents

问题描述

将一组 DataGrid 列的最佳/正确的方法是具有比例宽度（宽度=*），但要使其MINIMUM宽度为最小的内容宽度？目前，如果我使用 Width =*，那么这些列保持准确的比例，但是如果列太薄，内容就会被裁剪。如果我使用 Width =Auto，那么列的大小本身就完全符合他们的内容，但这使得它们各不相同。

What would be the best/right way to have a set of DataGrid columns have proportional width (Width="*"), but to have their MINIMUM width be at least the width of their content? At the moment, if I use Width="*", then the columns stay exactly proportional, but content gets cropped if the columns get too thin. If I use Width="Auto", then the columns size themselves perfectly to their content, but this makes them all different sizes.

我想要的是真正的两个组合，如Width =*，MinWidth =Auto，所以当有额外的宽度时，列将全部空间到相等的宽度，但是当网格变小，内容不会被裁剪。

What I want is really a combination of the two... like Width="*", MinWidth="Auto", so that when there's extra width the columns will all space out to equal widths, but when the grid is made smaller, the content never gets cropped.

可惜的是， MinWidth =Auto不存在，所以我想我需要绑定列的 MinWidth 属性，但很难弄清楚我将绑定到什么。

Sadly, MinWidth="Auto" doesn't exist, so I guess I need to bind the column's MinWidth property, but it's hard to figure out exactly what I would bind it to.

所以...如何告诉WPFMinWidth =列最宽的内容的宽度？

So... how do I tell WPF "MinWidth = the width of the column's widest piece of content"?

任何帮助赞赏！

谢谢，

Andy

推荐答案

我知道它有点迟了，但是我发现了你的问题并编写了一个纯XAML解决方案。

I know its a bit late, but I found your question and programmed a pure-XAML solution.

 <ColumnDefinition Width="42*" MinWidth="{Binding Path=ActualWidth, ElementName=projectInfoHeader }"/> 

其中 ElementName 指向控制大部分空间。当然这只是可能与元素有关，宽度有限。
如果你为一个 GroupBox 做例如，你可以调整它的大小，而不是调整到更大的宽度。

Where the ElementName points to the control taking up most of the space. Of course thats only possible to do with elements, that do have a limited width. If you do it for example for a GroupBox, than you can resize only to larger width and never resize to smaller one.

如果你有几个候选人的价值 MinWidth ，你需要写一个 IMultiValueConverter ，它需要一个对象[]，解析它来浮动，并返回最大值（它只是一个linq查询，如果你只使用它自己，不需要处理转换器的坏的使用）

If you have several candidates for the value of MinWidth, you need to write yourself a IMultiValueConverter, which takes an object[], parses it to floats, and returns the maximum (its just 1 linq query if you use it only yourselves and don't need to handle bad usage of the converter)

这种方式还支持动态更改 MinWidth 。

This way also supports dynamic changing of the MinWidth.

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