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How do I change the color of the LineConnector when activating the line tool?


You can change the color of the LineConnector while activating the LineTool. You have customize LineTool and LineBase class. In the Mouse up event of LineTool class you can change the color of the link.

Please refer to the following code snippet in CustomLineConnector class.

public override Tool ProcessMouseUp( MouseEventArgs evtArgs )


CompleteAction( ptStart, ptEnd );


private void CompleteAction( PointF ptStart, PointF ptEnd )


Node node = CreateNode( ptStart, ptEnd );

node.LineStyle.LineColor = Color.Red;


//To activate the LineTool in MainForm.cs

MyLineTool linetool = new MyLineTool(this.diagram1.Controller);



Public Overrides Function ProcessMouseUp(ByVal evtArgs As MouseEventArgs) As Tool

CompleteAction(ptStart, ptEnd)

End Function

Private Sub CompleteAction(ByVal ptStart As PointF, ByVal ptEnd As PointF)

Dim node As Node = CreateNode(ptStart, ptEnd)

node.LineStyle.LineColor = Color.Red

End Sub

''To activate the LineTool in MainForm.cs

Dim linetool As MyLineTool = New MyLineTool(Me.diagram1.Controller)



Here is a sample which shows the idea:


Article ID: Published Date: Last Revised Date: Platform: Control:
233 04/30/2011 07/10/2014 WinForms Diagram
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