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Normal Topic ControlNode Deserialization (Read 1848 times)
David Long
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ControlNode Deserialization
Jan 25th, 2012 at 4:33pm
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I have a Windows Forms chart that contains ControlNodes.
I can serialize the chart OK, but when I Deserialize it I get the error "Object Reference not set to an instance of an object". After this the chart seems to work OK, but the chart background is black.

What do I need to do to make everything work OK.

(I'm using FlowChart .NET 5.3.5)

DavidL
  
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Stoyo
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Re: ControlNode Deserialization
Reply #1 - Jan 25th, 2012 at 7:31pm
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What's shown at the top of the call stack when the exception is thrown?
  
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David Long
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Re: ControlNode Deserialization
Reply #2 - Jan 26th, 2012 at 11:34am
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I've sorted the problem - the Control I associated with the ControlNode was one of my classes that I derived from TextBox.  This class did not have a default constructor.  Once I provided one, LoadFromStream was happy to deserialize the chart.

DavidL
  
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