Where is the Shape located on Canvas ?

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Hi,
Say I put a Shape on a Canvas like this:

Canvas.SetLeft(myShape, 50);
Canvas.SetTop(myShape, 30);
canvas.Children.Add(myShape);

After that, myShape was drag & dropped on this Canvas.
How can I determine the current myShape coordinates ?
For example, before the drag & drop I would like to get (50,30).
Thanks !

Thanks for your answers !
1. Could you please show me an example of setting the position of the Shape by setting it's margins ?
2. What is the most used method to specify the Shape coordinates on a Canvas ? I would expect something like: canvas.Children.Add(myShape, 50, 30), but I don't see such method.

Posted 7-Jan-10 9:28am

moroshko

Updated 8-Jan-10 23:06pm

v3

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Christian Graus · Answer 1 · 2010-01-07T10:38:00

Solution 1

I would set the position by setting the top and left margin of the shape, then I would check those properties.

Posted 7-Jan-10 10:38am

Christian Graus

AspDotNetDev · Answer 2 · 2010-01-07T11:49:00

Solution 2

Canvas.GetLeft and Canvas.GetTop.

Posted 7-Jan-10 11:49am

AspDotNetDev

Christian Graus · Answer 3 · 2010-01-07T11:50:00

Solution 3

Ooops - small brain fart there.

Posted 7-Jan-10 11:50am

Christian Graus

Updated 7-Jan-10 12:38pm

v2

AspDotNetDev · Answer 4 · 2010-01-07T12:36:00

Not sure what Christian is talking about. This seems to work:

XML

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
        <Canvas Name="C1">
            <Button Name="B1" Canvas.Left="200" Canvas.Top="100" Content="1" />
            <Button Name="B2" Canvas.Left="20" Canvas.Top="10" Content="2" />
        </Canvas>
    </Grid>
</Window>

C#

using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1
{
	/// <summary>
	/// Interaction logic for Window1.xaml
	/// </summary>
	public partial class Window1 : Window
	{
		public Window1()
		{
			InitializeComponent();
			string str = Canvas.GetLeft(B1) + "," +
				Canvas.GetTop(B1) + "_" + Canvas.GetLeft(B2) +
				"," + Canvas.GetTop(B2);
			MessageBox.Show(str);
		}
	}
}

AspDotNetDev · Answer 5 · 2010-01-10T23:09:00

Solution 5

Please ask new questions as new questions, rather than modifying your original question. You add the shape to the canvas children, then you use Canvas.SetLeft and Canvas.SetTop.

Posted 10-Jan-10 23:09pm