How can i get the ActualWidth of Grid.Column, after changing its width using *?

Question

In my c# wpf code i used to change programmaticaly the width of a grid column, like this :

 mycolumn.Width = new GridLength(1, GridUnitType.Star);

But later in code, when i try to get the "ActualWidth", at first time, the value of ActualWidth (that is in pixel) it's always 0. The value is updated later by the parent window, for some reason i don't know.

double myWidthInPixels = myColumn.ActualWidth;

myWidthInPixels is set to 0, for the first time i ask it.

How to solve?

check this solution https://stackoverflow.com/questions/7403151/binding-issue-actualwidth-on-dynamic-filled-grid — jæk, Feb 22 '22 at 08:51

score -1 · Answer 1 · answered Feb 11 '22 at 09:04

-1

The solution for me was this :

double myWidthInPixels = Convert.ToDouble(myColumn.GetValue(WidthProperty));

answered Feb 11 '22 at 09:04

Filippo

56
6

`new GridLength(1, GridUnitType.Star).ToString()` gives me `*` and `Convert.ToDouble(myColumn.Width)` throws – Firo Feb 11 '22 at 16:10
This is not what I wrote in my reply. Check the conversion – Filippo Feb 12 '22 at 21:05
` ` and `var pixel = System.Convert.ToDouble(col1.GetValue(WidthProperty));` did not give me the width in pixel but NAN – Firo Feb 17 '22 at 14:20
You set it to NAN ! Give width a value! – Filippo Feb 18 '22 at 15:07
i set it to 1 star as in the question but in xaml. – Firo Feb 24 '22 at 14:58

How can i get the ActualWidth of Grid.Column, after changing its width using *?

1 Answers1