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This post provides an example on how you can use a three-state Checkbox control to set the IsChecked property of several other related CheckBoxes in a data-bound ItemsControl, or any other control that derives from the ItemsControl such as the DataGrid, ListView or TreeView controls, in WPF using the MVVM (Model-View-ViewModel) pattern.īy setting the IsThreeState property of a CheckBox control to true, the IsChecked property can also be set to NULL as a third state in addition to the two default ones true and false.Ī three-state CheckBox is usually used to reflect an overall state of some other related checkboxes. String names = "Selected names:" + Environment.How to bind a three-state CheckBox to some other CheckBoxes in a data-bound ItemsControl in WPF using MVVM Posted: J| Author: Magnus Montin | Filed under: MVVM, WPF | Tags: MVVM, WPF, XAML | 1 Comment So originally, it is not checked, but as they check it, your xml gets updated and you can always just run a query on the xml and get the information you need. I have not used xml for data binding, but it seems reasonable that it would work.
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You need the IsChecked Property, then you can go through yourself and figure it out at any moment. The Best way is described by Dev Hedgehog as your first response. What is the best way to get the checked treeview items? Usually this is not how you want to do this, but then it's your choice. Parent = VisualTreeHelper.GetParent(parent) Walk the visual tree to get the parent of this control You will need the method to walk up the VisualTreeView: public DependencyObject GetParentDependencyObjectFromVisualTree(DependencyObject startObject, Type type) TreeViewItem treeViewItem = (TreeViewItem)GetParentDependencyObjectFromVisualTree(checkedcheckbox, Typeof(TreeViewItem)) To get the value of the Header of the TreeViewItem the CheckBox is in, you can simply walk up the VisualTree and get it: CheckBox checkedcheckbox = e.OriginalSource as CheckBox Maybe I am not just seeing it, BUT yor CheckBox is bound to a IsChecked Property that is non-existent? If this was there, it would be easy to get the value. TreeViewer.Visibility = Visibility.Visible Solutions.Visibility = Visibility.Visible Questions = FindResource("questions") as XmlDataProvider
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if (listBox1.SelectedItem = "Imprimantes" & listBox2.SelectedItem = "DS40" & listBox3.SelectedItem = "Technique") If (listBox3.SelectedIndex = 0 & listBox1.SelectedIndex = 0 & listBox2.SelectedIndex = 0) Though since you in XML you will have to define your data structure to allow all this.įeel free to post us more of your code and xml if you wish us to suggest you precise solution or alternative ideas.Ĭ# code: private void listBox3_SelectionChanged(object sender, SelectionChangedEventArgs e) That is how you will get notified when a selection happens TreeView itself has a property called SelectedItem which shall be used for Binding. It's a simple WPF page with treeview with data from XML file.Ĭould i explain to me how can i get the selected treeviewItems of the checkedbox?Įven when you using XML you shall change your data structure design to allow CheckBox binding to a bool property. Now when you click on your button just let the ViewModel filter those items out which have the bool property set to true. One of type bool which may be bound to CheckBox IsChecked property and one of type string that shall represent the header. In ViewModel you will have a list of data and each item shall container at least two properties. This is an issue that shall be solved in ViewModel. Private static T FindVisualChild(DependencyObject obj) where T : DependencyObject TextBlock txtBlock = FindVisualChild(stackPanel) īool isChecked = ? : false
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StackPanel stackPanel = chkBox.Parent as StackPanel String names = "Selected names:" + Environment.NewLine Private void Button_Click_1(object sender, RoutedEventArgs e) You could save the name of an item in the TreeView when the CheckBox is checked and remove the name when it is unchecked: Tuesday, Novem2:37 PM ✅Answered | 2 votesĬan you guys explain to me that how can i get the treeview items values? If possible some snippet please. Private void TreeView_Checked(object sender, RoutedEventArgs e)ĬheckBox checkedcheckbox = e.OriginalSource as CheckBox MessageBox.Show(listbox11 + listbox22 + listbox33 ) CheckBox checkbox = (CheckBox)e.Source How can I get the text value of the treeview checked items? Thank you very much for your help.īutton function: private void Button_Click_1(object sender, RoutedEventArgs e) Hi Guys, I got a WPF treeview with checkbox and a button control to get the values of the checked treeview items.