![]() can be null? that must be a terrible error! Propert圜ategor圜ollection oColl = value as Propert圜ategor圜ollection Finally, I can only think of to bind the ModelItem.Propert圜ategories thus we could get any information in the properties and use them as the node name. ![]() I have been racking my brain trying the way to provide more meaningful name. Now, if we open the model, the tree looks like as below.īut it is not elegant to hard-code the name of the node with “dummy”. Some more lines in the xmal are required, in order to tell the tree view control to use the class. we do not need to convert back at this moment Public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture) if it is empty, return an arbitrary string ![]() since we bind DisplayName to the node, the value is a string Public object Convert( object value, Type targetType, object parameter, CultureInfo culture) Public class NwTreeConverter : IValueConverter In our case, we need firstly create our own conversion class. I do not want to spend time to explain the theory of IValueConverter. again, the tutorial on internet tells more: It allows you with conditional statements. Well, does this mean we have no way to give the desired name by binding? No, WPF is much flexible. I do not suggest to bind them to the tree. But they are not meaningful to the end user. ModelItem.ClassName or ModelItem.ClassDisplayName are not empty in default. While I guess Navisworks organized the names when it is loading the CAD file. in this model which is from a DWG file, the layer has name, the block definition has name, however, insert or the end geometries have no name. It is supplied by the original CAD designer. The tree is built.But you may quickly find some nodes have no name! What’s up? Actually, ModelItem.DisplayName is the name displayed for the end user. e.g.ĭocument oDoc = documentControl.Document In our case, it is the root item of the tree. In general, this is the top of the hierarchy. tell the tree view control which data source you want to bind. In short, the key steps with tree binding are:ġ. It helped me to know the basic elements I need for building the tree. I am not a WPF expert, I’d appreciate many posts in internet which guides me how to get started with. Next, we need to tell the tree view which source to bind. I adjusted the width of Navisworks view control to make the tree control wider. You could either drag it from toolbox, or add the elements directly in the xaml. The whole project is available at Download ADN-NwWPFTreeįirstly, add a tree view control to the form. If you have some codes of Win Form to build the hierarchy tree of Navisworks model like the Selection Tree in UI, you must have to iterate each items and build the nodes & child nodes recursively. WPF has a built-in set of data services to enable application developers to bind and manipulate data within applications. One of its unique features is Data Binding. But it is much more powerful and flexible. As mentioned, WPF could be looked as the successor of Win Form. In the last post, we have seen how to create an application of WPF with.
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