WPF - DataGrid列，宽度= " * "，但要适合内容的最小宽度

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.

让一组DataGrid列具有比例宽度(宽度=“\*”)，但是让它们的最小宽度至少等于内容的宽度，最好的/正确的方法是什么?此时，如果我使用Width="*"，那么列将保持完全成比例，但是如果列太瘦，内容将被裁剪。如果我使用Width="Auto"，那么列本身的大小与它们的内容完全一致，但这使得它们的大小各不相同。

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.

我真正想要的是两者的组合，比如Width="\*"， MinWidth="Auto"这样当有额外的宽度时，列将全部空间分配到相等的宽度，但是当网格变小时，内容就不会被裁剪。

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.

不幸的是，MinWidth="Auto"并不存在，所以我想我需要绑定列的MinWidth属性，但是很难确定要绑定到什么。

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

如何告诉WPF“MinWidth=”列最宽内容的宽度?

5 个解决方案

#1

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

我知道有点晚了，但我找到了你的问题并编写了一个纯粹的xaml解决方案。

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

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.

元素名指向占据大部分空间的控件。当然，这只可能与元素有关，因为元素的宽度是有限的。如果你对一个GroupBox这样做，那么你只能调整到更大的宽度，而不能调整到更小的宽度。

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)

如果有多个MinWidth值的候选值，您需要编写一个IMultiValueConverter，它接受一个对象[]，解析它到float，并返回最大值(如果您自己使用它，并且不需要处理转换器的不良使用，那么它只需要一个linq查询)

This way also supports dynamic changing of the MinWidth.

这种方式也支持动态变化的最小宽度。

#2

Set Width = "Auto" in XAML.

设置宽度= XAML中的“Auto”。

Then in the code:

然后在代码:

MinWidth = ActualWidth
Width = new GridLength(1, GridUnitType.Star)

#3

I also had problems to size Grid columns correctly inside the GridViewColumn. There were several things that I tried but then I found the UniformGrid. It was the ultimate solution for me. It just works. I haven't knew it before...seems that it doesn't exist in VS toolbox by default (?) and thus didn't know it even exists.

我还在GridViewColumn中遇到了正确大小网格列的问题。有几样东西我试过了，但后来我找到了均格线。这是我的终极解决方案。它只是工作。我以前不知道……似乎它在VS工具箱中默认不存在(?)，因此不知道它是否存在。

You can find more about UniformGrid from here.

您可以从这里找到更多关于均匀网格的信息。

#4

Give the column a name in the XAML:

在XAML中为列命名:

<Grid>
      <Grid.ColumnDefinitions>
             <ColumnDefinition Width="*" Name="Col1"/>
             <ColumnDefinition Width="*"/>
      </Grid.ColumnDefinitions>
</Grid>

Then set the MinWidth property in the code as shown below:

然后在代码中设置MinWidth属性，如下所示:

public MainWindow()
{
    InitializeComponent();

    Col1.MinWidth = 340; //enter desired minimum width here
}

#5

Simply you can use below code to set max or min width of the column

只需使用下面的代码设置列的最大或最小宽度

<ColumnDefinition Width="*" MaxWidth="40"/>

This will take the available space but it will limit to max 40px

这将占用可用空间，但将限制为最大40px

you can do the same with minwidth also

你也可以对minwidth进行同样的操作

<ColumnDefinition Width="*" MinWidth="50"/>

This will take the available space but always make sure it has 50px space at least. Hope this will help.

这将占用可用空间，但一定要确保至少有50px的空间。希望这将帮助。

#1