All nodes are redrawn when the InsertNodesCmd is executed

[Jeff Fansler]

I have a custom symbol that inherits from image symbol. I override draw in order to do my own drawing. What I''ve noticed is that my draw method is called every time I call the InsertNodesCmd. This makes sense most of the time, but I am creating a diagram programmatically and would like to disable drawing until all nodes are added. I tried suspendLayout on the diagram, but that doesn''t change anything. Is there any way to stop the drawing until I decide to re-enable it?

Thanks,
-Jeff Fansler

[Administrator]

Hi Jeff,

If you are running the 3.2 RC version of Essential Diagram, then you can use the Syncfusion.Windows.Forms.Diagram.Model.BeginUpdate()/EndUpdate(bool) methods to temporarily suspend diagram redraw. Please refer to the class reference documentation on these methods for additional information.

Thanks,
Prakash Surendra
Syncfusion Inc.,

[Jeff Fansler]

I upgraded to version 3.2 to resolve this issue and beginupdate/endupdate don''t seem to be working for me. The draw method is still being called on all my custom symbols. Any ideas?

>Hi Jeff,
>
>If you are running the 3.2 RC version of Essential Diagram, then you can use the Syncfusion.Windows.Forms.Diagram.Model.BeginUpdate()/EndUpdate(bool) methods to temporarily suspend diagram redraw. Please refer to the class reference documentation on these methods for additional information.
>
>Thanks,
>Prakash Surendra
>Syncfusion Inc.,

[Administrator]

Jeff,

Model.BeingUpdate() and Model.EndUpdate(true) are working for me using v3.2.1

I tested it using my own custom symbol.

[Jeff Fansler]

This was my fault. I was calling BeginUpdate/EndUpdate off of the diagram, not the model. Thanks for pointing me in the right direction.

-Jeff

>Jeff,
>
>Model.BeingUpdate() and Model.EndUpdate(true) are working for me using v3.2.1
>
>I tested it using my own custom symbol.