UserObject and XML Example

GoDiagram (6 and previous)
1

Guys,

Do you have an example of how the UserObject of a GoBasicNode can be bound to an XML attribute using the GoXmlBindingTransformer?

I have tried the following:

//Sample node in the XML

<node id=“733A02B8-CED7-4FC9-8DE5-6324A5E62572” label=“002 ASSEMBLY” parent=“7DF3DB0F-21A8-4C80-A275-5451136A18B5” type=“1” userobject=“733A02B8-CED7-4FC9-8DE5-6324A5E62572” />

//default node and binding code

GoBasicNode n = new GoBasicNode();
n.Shape = new GoRectangle();
n.LabelSpot = GoObject.Middle;
n.Text = “”;
n.Label.FontSize = 6;
n.Shape.BrushStyle = GoBrushStyle.Solid;
n.AutoResizes = true;

GoXmlBindingTransformer tr = new GoXmlBindingTransformer(“node”, n);

tr.IdAttributeUsedForSharedObjects = true;
tr.TreeLinkPrototype = l;
tr.TreeLinksToChildren = true;
tr.AddBinding(“label”, “Label.Text”);
tr.AddBinding(“parent”, “TreeParentNode”);
tr.AddBinding(“type”, “UserFlags”);
tr.AddBinding(“userobject”, “ToolTipText”);
tr.AddBinding(“userobject”, “UserObject”);
tr.AddBinding(“userobject”, “PartID”);

I attempt to retrieve the values at runtime through a click event:

private void govBOM_ObjectDoubleClicked(object sender, Northwoods.Go.GoObjectEventArgs e)
{
GoObject oBOM = e.GoObject;

        GoBasicNode n = oBOM.TopLevelObject as GoBasicNode;
        if (n != null)
        {
              MessageBox.Show(n.ToolTipText.ToString());
              MessageBox.Show(n.PartID.ToString());
              MessageBox.Show(n.UserObject.ToString());
         }
   }

Now, when I access the node at runtime, I get the GUID from n.ToolTipText, a “-1” from n.PartID and a GoBasicNode object equal n as n.UserObject.

Am I missing something elementary in setting up the document, the template node or the transformation?

2

UserObject is type Object, and the XML code doesn’t have any idea about how to convert it to/from text.



What are you storing in UserObject?

3

Jake,

I understand that the UserObject is a type Object, but I had seen other users on the forum with an “addBinding” for UserObject and thought I was just missing something. I’m curious how their XML is structured to get the binding to stick.

I finally figured out that the UserObject isn’t a viable source for storing key data when using the XML transformation, so I just created my own node class with a string property that I can bind to.

The value I was attempting to store was a Guid/String.

Again, if I’m missing something elementary, I’d be interested in knowing how to bind to the UserObject from XML, but for now, I’ve come up with a pretty solid solution in the custom node class.

Thanks

4

Well, just guessing here, I think the code may do a .ToString() on the object. and depending on the object, that may or may be useful.