selecteditemchanged | 易学教程

WPF: Clicking on a DataGrid Row inside a TreeView does not trigger TreeView.SelectedItemChanged

阅读更多关于 WPF: Clicking on a DataGrid Row inside a TreeView does not trigger TreeView.SelectedItemChanged

问题 I am new to WPF, and suffering with an existing code. We have a tree, which has many branches/leaves. In one branch we have a DataGrid. If we click on the empty area of the grid (where no rows are), then TreeView.SelectedItemChanged called properly. In our case, SelectedItem = 'SelectedGridBorder' (see XAML below) But if we click on a row/cell of the grid, row gets focused, but TreeView.SelectedItemChanged is NOT called. So TreeView.SelectedItem is still the previously selected item. Is is

How to call treeView.SelectedItemChanged programmatically

阅读更多关于 How to call treeView.SelectedItemChanged programmatically

问题 In my program I would like to call to a SelectedItemChanged event using c# code-behind, I am just unsure about what to pass as parameters. This is for a TreeViewItem . //Gets selected item in TreeView private void TreeOne_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) { MainWindowViewModel.SelectedItem = e.NewValue as TreeViewItem; } //I'm calling the SelectedItemChanged event from a RightButtonDown event private void TreeOne_MouseRightButtonDown(object sender,

Preventing WPF TreeView's SelectedItemChanged event from bubbling

阅读更多关于 Preventing WPF TreeView's SelectedItemChanged event from bubbling

问题 I have a WPF TreeView which triggers a SelectedItemChanged event. Whenever I select an item in the TreeView , the SelectedItemChanged event is triggered for the selected item and all of the selected node's ancestors in the tree . How do I prevent the SelectedItemChanged event from firing more than once? 回答1: Set the e.Handled to true in the handler. EDIT As an update to this subject, view this blog post. 来源： https://stackoverflow.com/questions/1127614/preventing-wpf-treeviews

Preventing WPF TreeView's SelectedItemChanged event from bubbling

阅读更多关于 Preventing WPF TreeView's SelectedItemChanged event from bubbling

I have a WPF TreeView which triggers a SelectedItemChanged event. Whenever I select an item in the TreeView , the SelectedItemChanged event is triggered for the selected item and all of the selected node's ancestors in the tree . How do I prevent the SelectedItemChanged event from firing more than once? Set the e.Handled to true in the handler. EDIT As an update to this subject, view this blog post . 来源： https://stackoverflow.com/questions/1127614/preventing-wpf-treeviews-selecteditemchanged-event-from-bubbling

TreeView auto-selecting parent after user selects child

阅读更多关于 TreeView auto-selecting parent after user selects child

In my window I have a TreeView and TextBox. Pretend the TextBox is used for writing a custom script and the TreeView is a way to select a function to insert; think Crystal Report script editor. My goal is for a user to click one of the children of the TreeView and that child inserts into the TextBox. The child is a function signature and resides under a Parent node. The user can then navigate to the TextBox, select one of the function parameters and replace it with another function signature. To accomplish this, I handle the TreeView's SelectedItemChanged event, set the TextBox's SelectedText,

TreeView auto-selecting parent after user selects child

阅读更多关于 TreeView auto-selecting parent after user selects child

问题 In my window I have a TreeView and TextBox. Pretend the TextBox is used for writing a custom script and the TreeView is a way to select a function to insert; think Crystal Report script editor. My goal is for a user to click one of the children of the TreeView and that child inserts into the TextBox. The child is a function signature and resides under a Parent node. The user can then navigate to the TextBox, select one of the function parameters and replace it with another function signature.