SelectedObjectChangedCallback) and when the property was changed I needed toĬhange the selected item but, alas again!, the selected item is I added a callback to the dependency-property-changed event (see Very smooth so I added the SelectedObject property. Now that I knew what I had to do, I started writing the EnhancedTreeView classĪt first I thought about overriding the SelectedItem property but it didn't go Learn what are dependency properties and how do they work again, some googlingīrought me to this post which I think gives a very good explanation of In the code I noticed a lot of dependency properties, and I figured its time to Understanding I decided to write my own (and use Philip's TreeView as ViewModel but, alas, the TreeView's "SelectedItem" property isĪfter some googling I found the Versatile TreeView by Philip Sumi whichĪdds the property I wanted, but since I'm learning WPF and want a deeper Property of the TreeView control to the "SelectedItem" property of its We can use the ObjectInTreeView Control in XAML or in code.In a new WPF application I'm writing I needed to bind the "SelectedItem" Private static string GetValueAsString( object value) KeyValueNode.Value = GetValueAsString(kv.Value) ĭictionary dictionary = (Dictionary)item Private static void BuildTree( object item, TreeNode node) Var serialized = (obj) ĭictionary dic = jss.Deserialize>(serialized) JavaScriptSerializer jss = new JavaScriptSerializer() Public static TreeNode CreateTree( object obj) Public partial class ObjectInTreeView : UserControl The WPF Control displaying the tree will be: Thanks to this article (Which showed how to display JSON in a WinForms tree view) for pointing me in the right direction.īy the way, we can use the same solution to visualize a JSON document in a WPF TreeView. Once in JSON format, we can use JavaScriptSerializer (in ) to deserialize the JSON and get a data structure we can easily iterate over and populate the tree view. Serializing an object to JSON will do exactly what we need – Go over the object’s properties and fields with reflection, turning them into a “tree-like” data structure. You probably know it and use it every day – Yes, it’s Newtonsoft.Json. Luckily, a library that does exactly that, already exists. You might have virtual properties, abstract classes and generics. And so on.Īs a matter of fact, going over the properties and fields of an object with Reflection is not that easy. Then, we will need to go to the children of each of those properties and add them as well. To do that, we will need to go over each property of the object and add it to the tree. Even though I found some similar solutions, they weren’t what I wanted or simply didn’t work.Īfter some research and coding, spending much more than the intended 10 minutes, I came up with a solution I’m pretty pretty happy with (*self pat on the back). I figured there would be an easy solution I can google and copy-paste, spending no more than 10 minutes on the whole thing. NET object, and the result should be a tree view displaying the object’s properties and fields. The debugger’s data tip control is exactly what I needed. NET object’s properties in an expandable tree view? This is something we constantly use inside the Visual Studio debugger: I recently encountered an interesting challenge: How to display a.
0 Comments
Leave a Reply. |