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Can I display a tooltip when the mouse is hovered over a diagram node?

Platform: ASP.NET Web Forms (Classic) |
Control: DiagramWebControl |
Published Date: April 30, 2011 |
Last Revised Date: May 31, 2019

Can I display a tooltip when the mouse is hovered over a diagram node?

Tooltips can be displayed by using an ALT element for the diagram node. The following code should give you an idea,

Add the following code snippet to Diagram.web\Samples\1.1\OrgLayout sample

C#

protected void LoadNodeDisplayData()

{

EmployeeSymbol emplysymbol = new EmployeeSymbol();

emplysymbol.EmployeeName = emplysymbol.EmployeeName;

emplysymbol.EmployeeID = emplysymbol.EmployeeID;

// Provide a tooltip for the employee symbol.

emplysymbol.SetPropertyValue("ALT", String.Concat("Click to view ", emplysymbol.EmployeeName, "'s contact information."));

this.DiagramWebControl1.Model.AppendChild(emplysymbol);

}

VB

Protected Sub LoadNodeDisplayData()

Dim emplysymbol As EmployeeSymbol = New EmployeeSymbol()

emplysymbol.EmployeeName = emplysymbol.EmployeeName

emplysymbol.EmployeeID = emplysymbol.EmployeeID

' Provide a tooltip for the employee symbol.

emplysymbol.SetPropertyValue("ALT", String.Concat("Click to view ", emplysymbol.EmployeeName, "'s contact information."))

Me.DiagramWebControl1.Model.AppendChild(emplysymbol)

End Sub

This approach is also implemented in Diagram.web\Samples\1.1\CustomDescriptor sample.

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