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Sachin
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Context menu in diagram lite
Mar 29th, 2009 at 2:43pm
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HI

In my application , need to  implement context menu
in this context menu if click next step i need to go another page , back means previous page  with created diagrams. how to achive this one,

Temporary saving functionality is available like viewstae,

regards
sachin
  
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Stoyo
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Re: Context menu in diagram lite
Reply #1 - Mar 30th, 2009 at 7:03am
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Hi,

If what you need is to detect right-clicks and display a context menu, check this tip -
http://silverlight.net/blogs/msnow/archive/2008/07/01/tip-of-the-day-14-how-to-r...

Changing pages might be done by keeping several Diagram object around and removing / adding them to the page when needed, or by reusing the same Diagram and calling SaveToString and LoadFromString to save the state as a string, or perhaps SaveToXml and LoadFormXml to save the state in the Silverlight local storage.

I hope that helps,
Stoyan
  
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Sachin
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Re: Context menu in diagram lite
Reply #2 - Mar 30th, 2009 at 7:14am
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HI  stoyo

i did same but while load fromstring method calling time  value cannot be null error

  string s = this.DiagramLight.SaveToString(SaveToStringFormat.Base64);

           this.DiagramLight.LoadFromString(s);

and when i double click the node it should go to the next diagramlite (means new diagramlite );


so node doubleclick event i wrote this.DiagramLight.clearall();

i am gettig error how to solve this one


sachin
  
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Sachin
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Re: Context menu in diagram lite
Reply #3 - Mar 30th, 2009 at 9:06am
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HI stoyo

If  i am using external control (am adding to diagramlite control ), created diagram , after that savetostring , clear all();

then calling loadfromstring getting value cannot be null only i am using external objects , if i am using shapenode to create diagram then clear and call the load from string it is working , how to solve this one
  
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Re: Context menu in diagram lite
Reply #4 - Mar 30th, 2009 at 12:51pm
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Hi Sachin,

Do you mean you are using ControlNodes with hosted controls? Have you tried handling the SerializeControl and DeserializeControl events?

Stoyan
  
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Sachin
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Re: Context menu in diagram lite
Reply #5 - Mar 30th, 2009 at 3:29pm
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HI

yes i am using control node to host the control and add to the diagramlight .

afterthat  savetosring method used to sstore the string and loadstring method passing this string

getting Value Cannot be null,
  
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Re: Context menu in diagram lite
Reply #6 - Mar 31st, 2009 at 10:11am
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So, are you handling the SerializeControl and DeserializeControl events?
  
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Sachin
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Re: Context menu in diagram lite
Reply #7 - Mar 31st, 2009 at 10:16am
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No i am not handling any events
  
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Stoyo
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Re: Context menu in diagram lite
Reply #8 - Mar 31st, 2009 at 10:25am
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If the exception stack trace shows it's thrown by the custom control because some of its attributes is not set after loading, you will need to handle these events and save the required attributes.

I hope that helps,
Stoyan
  
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