treeviewitem

问题 I want the parent of a node that is selected as TreeViewItem I have a Person class with 2 fields. Name(String) and Children(List of string) This is my xaml code <Grid x:Name="gridView" Margin="10"> <TreeView Name="treeView1" TreeViewItem.Selected="TreeViewItem_OnItemSelected" ItemsSource="{Binding}"> <TreeView.ItemContainerStyle> <Style TargetType="{x:Type TreeViewItem}"> <Setter Property="IsSelected" Value="{Binding IsSelected, Source=Check, Mode=TwoWay}" /> </Style> </TreeView

问题 I am getting these errors. I have read several posts and my TreeViewItem does have Horizontal and VerticalContentAlignment defined. Interestingly compiling in .NET 4.0+ makes the error go away (I use 3.5 - else I suffer from this https://connect.microsoft.com/VisualStudio/feedback/details/588343/changed-behaviour-from-net-3-5-to-net-4-0-of-wpf-textbox-formatting-when-proper) System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType

问题 I try to apply MVVM for treeview by refer to Josh's tutorial https://www.codeproject.com/Articles/26288/Simplifying-the-WPF-TreeView-by-Using-the-ViewMode Here is my full source code TreeNode.cs public class TreeNode { private ObservableCollection<TreeNode> _children = new ObservableCollection<TreeNode>(); public ObservableCollection<TreeNode> Children { get { return _children; } set { _children = value; } } public string Name { get; set; } public string ID { get; set; } } TreeNodeViewModel

问题 I try to apply MVVM for treeview by refer to Josh's tutorial https://www.codeproject.com/Articles/26288/Simplifying-the-WPF-TreeView-by-Using-the-ViewMode Here is my full source code TreeNode.cs public class TreeNode { private ObservableCollection<TreeNode> _children = new ObservableCollection<TreeNode>(); public ObservableCollection<TreeNode> Children { get { return _children; } set { _children = value; } } public string Name { get; set; } public string ID { get; set; } } TreeNodeViewModel

问题 I would like to run a command on the click of a tree view item, rather than in a menu that comes up. Right now in my package.json, I have this: { "command": "test.view.showError", "when": "view == test.view && viewItem == test", "group": "inline" } Right now, "inline" will put an icon next to the words which you have to click to run the command, but I would like the command to run when I click on the node itself. What do I change "group" to? Or do I do something different entirely? Thanks 回答1

问题 I have adapted a TreeViewItemStyle to my need and it works great when I have hardcoded my TreeViewItems like so: <TreeView Grid.Column="0" HorizontalAlignment="Stretch" Name="treeView1" VerticalAlignment="Stretch" > <TreeView.Items> <TreeViewItem Header="McDonalds" IsExpanded="True"> <TreeViewItem.Items> <TreeViewItem Header="Burger" IsExpanded="True" IsSelected="True"> <TreeViewItem.Items> <TreeViewItem Header="Meat" /> </TreeViewItem.Items> </TreeViewItem> </TreeViewItem.Items> <

问题 I want to adapt the default WPF TreeView/TreeViewItem template, so that the entire row can be highlighted, as shown in the image: However, I've tried several templates from googling, but none of them can really make the effects, some wrong answers were even marked as correct... There was an answer in codeflow which seems to work, but it add extra C# code, or didn't need extra code but not working perfectly. I don't want to add extra C# code, but only change the default template. Anyone have

问题 i am writing one app and i need to set background under entire row by items. I found some inspiration in here but i cannot get idea how to get Border background value in template (the problem is a bit more complicated:) My problem is that in the treeview are 2 types of "data" (files and folders). User can modify the background under files and folders. Right now i have the background on textblock, but it seems horrible and i want to have the background over entire row (i think it will looks

问题 I have a TreeView in which I would like to allow the user to add and delete subitems from. In exploring basic functionality I am using a button and a textbox to add this subitem. When the user clicks on the button a new TreeViewItem needs to be created and set as a subitem of my parent TreeView with the text from the textbox set as the subitem's Header . This is my current code under the button_click event: //ADD T_ITEM TO PARENT TREEVIEW private void button1_Click(object sender,

问题 Is there a way to make the treeview show lines connecting items when we expand them? Thanks! 回答1: You'd have to replace TreeViewItem control template to achive that. Look at this thread on MSDN there should be all information you need. 来源： https://stackoverflow.com/questions/1222591/show-treeview-items-connected-with-lines