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Normal Topic PasteSelection error under Silverlight 3 (Read 4852 times)
buchatsky
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PasteSelection error under Silverlight 3
Mar 2nd, 2010 at 10:37am
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Hi All,

I'm trying a simple copy/paste operation like this:

Code
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SelectionCopy selCopy = null;
...
selCopy = selDiagram.CopySelection(true);
...
if (selCopy != null)
  selDiagram.PasteSelection(selCopy, 10, 10);

and get the following error:
Code: 1001   
Category: ParserError      
Message: AG_E_UNKNOWN_ERROR    
File:      
Line: 3    
Position: 117    
It doesn't matter whether I paste selection into the same or another diagram, in IE or FireFox.
MindFusion.Diagramming.Silverlight.dll version 1.3.0.21947
Silverlight 3 version 3.0.40818.0
  
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Stoyo
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Re: PasteSelection error under Silverlight 3
Reply #1 - Mar 2nd, 2010 at 10:54am
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Hi there,

This looks like an error in the Xaml file, but it might also happen if an object created by the XamlParser throws an exception. Are you calling that code from the page class constructor?

Stoyan
  
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buchatsky
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Re: PasteSelection error under Silverlight 3
Reply #2 - Mar 3rd, 2010 at 9:27am
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No, I call both methods in response to button clicks that I added to one of your samples, Effects.csproj
Interesting! It works with diagram links, but not with nodes. And, in case with links, Paste works only once, the second time it throws "Element is already the child of another element". And it does not work with already pasted links
  
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Stoyo
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Re: PasteSelection error under Silverlight 3
Reply #3 - Mar 3rd, 2010 at 11:40am
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This turned out to be an effect of a known bug which happens because the Silverlight DoubleCollection objects cannot be shared, but the control does not clone them correctly when pasting items:
http://mindfusion.eu/Forum/YaBB.pl?board=diaglite_disc;action=display;num=126638...

As a workaround for both problems, do this after pasting:

Code
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private SelectionCopy sc;
private void OnPaste(object sender, RoutedEventArgs e)
{
	diagram.PasteSelection(sc, 10, 10);
	foreach (DiagramItem item in diagram.Items)
		item.StrokeDashArray = new DoubleCollection();
	sc = diagram.CopySelection(true);
}


I hope that helps,
Stoyan
  
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Stoyo
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Re: PasteSelection error under Silverlight 3
Reply #4 - Mar 3rd, 2010 at 4:13pm
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Hi,

With this version you won't have to clone the dash array:
https://mindfusion.eu/_beta/diaglite14_sp.zip

I hope that helps,
Stoyan
  
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buchatsky
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Re: PasteSelection error under Silverlight 3
Reply #5 - Mar 11th, 2010 at 1:00pm
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Thank you, now it works!
  
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