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.
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.
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.
How do I tell WPF "MinWidth="
the width of the column's widest piece of content?
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 }"/>
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.
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)
This way also supports dynamic changing of the MinWidth
.
Set Width = "Auto"
in XAML.
Then in the code:
MinWidth = ActualWidth
Width = new GridLength(1, GridUnitType.Star)
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.
You can find more about UniformGrid from here.
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