I am using NetDiagrammer in asp.net. I have added the functionality to allow user to set titles for nodes and arrows. Once everything is set then this diagram is saved in xml format by calling savetoxml method. Later when i try to load this xml file using loadfromxml then I get the following error:-


[FormatException: Input string was not in a correct format.]
MindFusion.Diagramming.Diagram.LoadFromXml(XmlDocument document, Boolean loadDiagramProperties) +2459
MindFusion.Diagramming.Diagram.LoadFromXml(XmlDocument document) +42
MindFusion.Diagramming.WebForms.DiagramView.LoadFromXml(XmlDocument document) +55
MindFusion.Diagramming.WebForms.DiagramView.LoadFromXml(String fileName) +82



Any help would be appreciated.

No, I am not storing these values as tag values rather I am just setting the text property of each node and link and then call savetoxml method to save it. I am attaching the xml file here.

Are you handling the DeserializeTag event, and what does the handler look like?

Our developer reproduced the exception loading the attached file and thinks it happens if you use custom SerializeTag handler without a reciprocal DeserializeTag. The problem is that the standard tag serialization code writes a "Type" attribute, and the deserialization code tries to read that attribute and parse it as an int value. If the <Tag> elements was saved by SerializeTag handler, that attribute is not there and the built-in deserialization code cannot load the tag. So handling DeserializeTag should fix the problem.

I hope that helps,
Stoyan