Question

I have a static canvas. I have added a shape runtime. Then I try to add a contentcontrol which will hold the shape. But as the the shape is already added to the canvas, it gives a logical child error. Can anyone help me how to get this done keeping the logic of adding the contentcontrol later dynamically?

XAML: Inside window tag keep a blank canvas with name="cnv"

C#:

        Ellipse ee = new Ellipse();
        ee.Width = 100;
        ee.Height= 50;
        ee.Fill= Brushes.Red;
        ee.Name = "el";
        hidden.Children.Add(ee);

        ContentControl cc = new ContentControl();
        cc.BorderBrush = Brushes.Black;
        cc.Content = ee;

        cnv.Children.Add(ee);

Answer 1

。

hidden.Children.Remove(ee);
cc.Content = ee;
cnv.Children.Add(ee);

PS。几乎肯定会有一种更清洁、更清洁的方式来做你所重新做的事情,而不是像你一样在视像树上玩.。

Answer 2

由于肯塔指出,只有一方的父母,因此完全删除以下两条:

    hidden.Children.Add(ee);

你也呼吁:

    cnv.Children.Add(ee);

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