treeview

问题 I currently have a WPF Treeview with a structure of: --> Group 1 (Hierarchical Group) ---> Group 2 (Hierarchical Group) ---> Item 1 ---> Item 2 ---> Item 3 I currently have a SelectedItemChanged event handler hooked up to this treeview like so private void TreeViewControl_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) { if (e.NewValue is Item) { Item item = e.NewValue as Item; if (Item != SelectedItem) { //keep SelectedItem in sync with Treeview.SelectedItem

问题 How to extend the standard mouse behavior of a TreeView node (like selecting, hot tracking, expansion on double click etc.) over a wider node area? I've got a custom-drawn node that has a wider label than it would have if it was system-drawn and it only reacts to mouse actions when the cursor is within the ordinary node bounds. Any Ideas? BTW, intercepting TVM_GETITEMRECT and TVM_HITTEST won't do the trick. A few words about what I'm doing: I'm developing a WinForms tree control that normally

问题 How to extend the standard mouse behavior of a TreeView node (like selecting, hot tracking, expansion on double click etc.) over a wider node area? I've got a custom-drawn node that has a wider label than it would have if it was system-drawn and it only reacts to mouse actions when the cursor is within the ordinary node bounds. Any Ideas? BTW, intercepting TVM_GETITEMRECT and TVM_HITTEST won't do the trick. A few words about what I'm doing: I'm developing a WinForms tree control that normally

问题 I would like to store some data from TreeNode.FullPath and then later i would like to re-expand everything up to that point. Is there a simple way of doing it? Thanks a lot! 回答1: I had a similar problem (but I just wanted to find the treenode again) and found this: http://c-sharpe.blogspot.com/2010/01/get-treenode-from-full-path.html i know it only answers part of your problem, but better than no replies at all ;) 回答2: You can write it as an extension method to the TreeNodeCollection : using

问题 I have a dataset I created from a Oracle Query. I get a datatable from a function and add it to dataset. now I try to bind to treeview to the ds. My code Behind: private void init_TreeView() { //TreeViewItem parent = PM_TreeView.Items.Add("Requirements"); DataTable dt = DataBases.RunQuery(); dt.TableName = "REQ"; DataSet ds = new DataSet(); ds.Tables.Add(dt); //ds.Relations.Add("rsParentChild", ds.Tables["REQ"].Columns["RQ_REQ_ID"], ds.Tables["REQ"].Columns["RQ_FATHER_ID"]); var dataSet = ds;

问题 I have a dataset I created from a Oracle Query. I get a datatable from a function and add it to dataset. now I try to bind to treeview to the ds. My code Behind: private void init_TreeView() { //TreeViewItem parent = PM_TreeView.Items.Add("Requirements"); DataTable dt = DataBases.RunQuery(); dt.TableName = "REQ"; DataSet ds = new DataSet(); ds.Tables.Add(dt); //ds.Relations.Add("rsParentChild", ds.Tables["REQ"].Columns["RQ_REQ_ID"], ds.Tables["REQ"].Columns["RQ_FATHER_ID"]); var dataSet = ds;

问题 I have a dataset I created from a Oracle Query. I get a datatable from a function and add it to dataset. now I try to bind to treeview to the ds. My code Behind: private void init_TreeView() { //TreeViewItem parent = PM_TreeView.Items.Add("Requirements"); DataTable dt = DataBases.RunQuery(); dt.TableName = "REQ"; DataSet ds = new DataSet(); ds.Tables.Add(dt); //ds.Relations.Add("rsParentChild", ds.Tables["REQ"].Columns["RQ_REQ_ID"], ds.Tables["REQ"].Columns["RQ_FATHER_ID"]); var dataSet = ds;

问题 I am trying to access a TreeView running in another process. Many of the tree view messages work correctly. However, trying to use the TVM_GETITEM causes that other process to crash. The code below is a simple program that illustrates the crash. To get it to run, you will need some CHM help file. I'm using a CHM help file because hh.exe uses a TreeView control for the table of contents. The goal is to be able to get the a tree node's text. using System; using System.Collections; using System

问题 I am trying to access a TreeView running in another process. Many of the tree view messages work correctly. However, trying to use the TVM_GETITEM causes that other process to crash. The code below is a simple program that illustrates the crash. To get it to run, you will need some CHM help file. I'm using a CHM help file because hh.exe uses a TreeView control for the table of contents. The goal is to be able to get the a tree node's text. using System; using System.Collections; using System

问题 I am trying to access a TreeView running in another process. Many of the tree view messages work correctly. However, trying to use the TVM_GETITEM causes that other process to crash. The code below is a simple program that illustrates the crash. To get it to run, you will need some CHM help file. I'm using a CHM help file because hh.exe uses a TreeView control for the table of contents. The goal is to be able to get the a tree node's text. using System; using System.Collections; using System