Create/Open the WinForms SubDiagram using NodeClick Events.
Create/Open the SubDiagram using NodeClick Events
We don’t have built-in option to create/open a new sub-diagram. But we can achieve this requirement of opening the sub-diagram in application level. In this document, we are giving an example to create and open the sub-diagram in another diagram’s model using WinForm Diagram’s NodeClick event.
The following code example for registering the NodeClick event to diagram’s controller
[C#]
//Registering the nodeclick event diagram1.EventSink.NodeClick += EventSink_NodeClick;
[VB]
'Registering the nodeclick event diagram1.EventSink.NodeClick += EventSink_NodeClick
The following code example for create/open the sub diagram using NodeClick event
[C#]
void EventSink_NodeClick(NodeMouseEventArgs evtArgs)
{
//load the saved diagram file to subdiagram that we want to open
if (evtArgs.Node.Name == "Venn Diagram")
{
subDiagram = diagram3;
subDiagram.Load("..//..//Venn Diagram.edd");
}
else
{
subDiagram = diagram2;
subDiagram.Load("..//..//StateDiagram.edd");
}
if (subDiagram != null)
{
//assign the current node's location to the subdiagram location
subDiagram.Location = new Point((int)evtArgs.Node.BoundingRectangle.X, (int)evtArgs.Node.BoundingRectangle.Y);
//show the sub diagram
subDiagram.Show();
//setting the diagram bound as total bounds of the content
SizeF modelsize = subDiagram.Controller.GetBoundingRect(subDiagram.Model.Nodes, MeasureUnits.Pixel).Size;
subDiagram.Size = new Size((int)modelsize.Width, (int)modelsize.Height);
}
}
[VB]
Private Sub EventSink_NodeClick(ByVal evtArgs As NodeMouseEventArgs)
'load the saved diagram file to subdiagram that we want to open
If evtArgs.Node.Name = "Venn Diagram" Then
subDiagram = diagram3
subDiagram.Load("..//..//Venn Diagram.edd")
Else
subDiagram = diagram2
subDiagram.Load("..//..//StateDiagram.edd")
End If
If subDiagram IsNot Nothing Then
'assign the current node's location to the subdiagram location
subDiagram.Location = New Point(CInt(Fix(evtArgs.Node.BoundingRectangle.X)), CInt(Fix(evtArgs.Node.BoundingRectangle.Y)))
'show the sub diagram
subDiagram.Show()
'setting the diagram bound as total bounds of the content
Dim modelsize As SizeF = subDiagram.Controller.GetBoundingRect(subDiagram.Model.Nodes, MeasureUnits.Pixel).Size
subDiagram.Size = New Size(CInt(Fix(modelsize.Width)), CInt(Fix(modelsize.Height)))
End If
End Sub
I hope you enjoyed learning about how to create/open the WinForms SubDiagram using NodeClick Events.
You can refer to our WinForms Diagram feature tour page
to know about its other groundbreaking feature
representations and documentation, and
how to quickly get started for configuration specifications. You can also
explore our
WinForms Diagram example to
understand how to create and manipulate data.
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