For some reason, we have transformed our application XML configuration file to the format in which it's represented as tree nodes in a tree control. (Depth of tree node is not limited.)
XML Element names are transformed to tree nodes and at every node their would be value corresponding to that XML element. (i.e. In our Winform application, we show the XML document in Tree control. Every element is one Tree node and it's corresponding value is displayed in the text box. BUT i cannot use control's properties.)
Now I need to search a node (XML element) string from any depth to up in the hierarchy up to grandparent.
How can I achieve it in C# 3.0?
Related
I'm using Protégé to define an ontology and I'm having trouble defining constraints.
Let's say I have a class "Node" and the Node can be related to other nodes and so on (creating a hierarchical tree). Each node as a data property with a corresponding level.
While I can define domain and range for the property, and define that the class Node has a restriction on this property (only Node values), I don't see any way to define that a Node can only be related to a Node with a lower level.
Any ideas on how to do this using OWL?
Thanks
I want to calculate enter image description here automation id of text block inside the content presenter. My visual tree looks like this-
You can use System.Windows.Media.VisualTreeHelperto determine any control in visual tree.
There are two helpful methods
System.Windows.Media.VisualTreeHelper.GetParent(DependencyObject reference)
to go up in tree hierarchy
System.Windows.Media.VisualTreeHelper.GetChiled(DependencyObject refernce, int childIndex)
to go down in tree hierarchy
See more: VisualTreeHelper
As far as I understand, a logical tree is always a subset of the visual tree of some element in WPF. Technically, the distinction between the two is whether or not they are assigned to the Template property of an element (= visual) or to the Content, Children or Child properties thereof (= logical).
What I wonder is this: Within the visual tree that I assign to a Template property, I can recusively have logical and visual trees again, since I can simply assign the Template respectively Content of a visual tree’s descendants again.
Is this true, and if so, how are the properties (like dependency property inheritance) of inner visual/logical trees different from those of the outermost?
I have a WPF TreeView which varies in depth. My application also has the ability to search inside the tree. This is accomplished by using the Filter property of the ICollectionView interface. Searching and filtering all works fine, but the problem lies when I try to remove the filter.
I have the following scenario; I enter search criteria and the treeview is filtered and the result is shown. Now when I press my button to clear the filter, the filter is removed but the problem is that it shows only the child nodes of what I previously searched for and does not show the child nodes of the other nodes, these nodes are also not expandable anymore.
My search function recursively walks down the tree and tests each node for the entered search text.
Do I have to apply the view.Filter = null; statement for each node and their childnodes?
Thanks,
Grant
Yes!
Every hierarchy level has it's own ICollectionView and each uses it's own filtering. So yes, yu have to clear the filter on every (parent-)node (depending on your exact implementation).
What is the meaning of the term 'nodes' w.r.t extjs? I understand the concept of a node w.r.t ..say an XML document...but what is the meaning of a node in extjs? i.e:When one does combo.view.getNodes() ,is the purpose to get a list of the items in the combo?
http://dev.sencha.com/deploy/dev/docs/source/DataView.html#method-Ext.DataView-getNodes
It seems it is used to get DOM nodes (i.e. HTML elements) that the combobox is build of.