获取自动宽度元素的宽度 [英] Get width of element of auto width

问题描述

我正在尝试获取 StackPanel 的 Width.我试过了:

I am trying to get the Width of a StackPanel. I tried:

double width = stk_main.ActualWidth;

它给出了零，它不应该是.还有:

which gave zero and it shouldnt be. Also:

double width = stk_main.Width;

给出 NaN 因为宽度之前设置为 auto .那么我怎样才能得到宽度呢?

which gives NaN because width set to auto previously. So how can I get the width?

推荐答案

可以使用sizeChanged，但是当你使用的堆栈面板不改变大小时它不起作用.

You can use sizeChanged, but it doesn't work when the stack panel you used not change size.

private void stk_main_SizeChanged(object sender, SizeChangedEventArgs e)
{
    double yourWidthNow = e.NewSize.Width;
}

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