I have a textbox and some labels inside the data template of bounded listbox.
When I click on any label the whole item is highlighted in blue, but when I click directly on a different textbox the selection does not change.
Is there a way to make the selection of the listbox change even when a textbox is clicked?
thanks
This is what I've exactly asked few days ago, see post: "WPF: Trigger SelectedIndex changed whilst clicking on any control within a ListBoxItem area"
basically there are few solutions, using code behind and XAML, but I've not verified latter approach yet
The reason is because the TextBox handles the click event in order to receive focus. There are a number of ways to handle this, including but not limited to:
stop the TextBox handling mouse events (which prevents the user from focussing it using the mouse)
use an eventhandler when the TextBox gains focus (or PreviewClick or similar), to select the parent ListItem
Related
Is there a way to make an entire WPF Window inert after a button click?
The window is invoked via Window.ShowDialog() and after use, the window is no longer needed for interaction but I leave it open to remind the user of the inputs in TextBox's, ListBox's, and give visual feedback via OxyPlot and so on. I leave it to the user to close the window manually.
One solution is to disable all buttons but that's tedious and it still leaves TextBox's functioning. That's not optimal because for anything to be functioning creates the wrong impression that the Window remains for anything other than looking at. It would be better for every control to be non-functioning by a single setting.
I did it by putting a name on the WPF window code behind and then setting .IsEnabled false upon the appropriate button click. All buttons, combo boxes, text boxes, and even OxyPlot became inert at that point and most parts were greyed out.
Consider creating a dedicated boolean dependency property in your code-behind or viewmodel and binding IsEnabled of every TextBox to the property.
I have a UserControl in WPF and it contains a variety of controls in it... The most important being the DataGrid Control. The DataGrid control is bound to an Observable Collection list. This list filled with different items based on couple of filters selected by the user. Now, once the DataGrid displays all the data. I want to set the Focus on the first (Filters) combobox on my usercontrol. Is there any way to know when the DataGrid has completely loaded??? Is there any DataTrigger I could set that i could trigger to inform me that Grid was refreshed with new list and I can set the ComboBox to focus. Basically i'm not able to set the focus to the first control on my UserControl when the data in the DataGrid has been repopulated... Please let me know if anyone knows how to resolve this issue!!
Thanks in advance.
I hate to work in code behind but sometimes that is only way. This can be done in two ways according to me:
Use EventAggregator to raise the event from your ViewModel once you are done with your filtering logic in it. Listen to this event in view code behind and in the handler do firstCombo.Focus()
Second is bit dirty, So there must be the button or the last control after which you apply filter on your listview. In the buttonClickHandler/or any event of the last control (like selectionchange) directly do firstCombo.Focus(). In this case the moment you will press your button focus will move to combo.
Thanks
I need to set focus to UserControl itself, not its child.
Otherwise I cannot implement insertion from the buffer. :(
Setting Focusable=True doesn't help.
Google and SO tells only how to set focus to UserControl child.
My control contains:
- Toolbar with several buttons bound to commands of the corresponding
VM
- TextBox which is the input for the filter
- DataGrid - list of items.
I need to bind Ctrl+V command to VM. But to handle this gesture UserControl must have focus within. When there are no items in the grid (VM's collection is empty) buttons are disabled and the only element which can get focus is TextBox. But it handles Ctrl+V in its own way and I don't want to change this behavior.
Thus, I need something to set focus to when I click the area of UserControl.
I believe UserControl is the best candidate for it.
But I don't know how to make it selectable.
The whole problem was in my misunderstanding of controls' behavior.
This SO question clearly shows it I believe.
Thus, setting UserControl.Focusable = true is not sufficient. To make it navigatable via keyboard IsTabStop must be true also. And to make UC selectable by mouse click we should call Focus() in mouse eventhandler. That's it.
I'm using a modified form of treeview, for the treeviewitem there is a template to show a textbox with a done button in a popup. I have used a static class to find if the mouseOver
(IInputElement currentPosition = Mouse.DirectlyOver;) event on any of the other treeview item to highlight them other than the one in Popup textbox. Items are added dynamically to this treeview. I'm using MVVM model here.
The problem is that when the first item is added and is in Popup textbox , the mouseover for the entire application is somehow turned off, which is not required. But on adding the second item and leaving it in the Popup textbox, the mouseover is switched on, i.e the treeviewitems get highlighted when mouseover occurs. this happens alternately....
What is capturing this mouseover event..??
try using snoop it can tell you what events are being raised, handled. and its a cool tool as well for the wpf man (or woman:)
When the WPF ComboBox is clicked and in-focus, the only interaction that occurs after that can be with the ComboBox. If anything else is interacted with, including the window functions (minimize, restore, close, resize) and any control in the window, the action is ignored and the ComboBox loses focus.
In addition, MouseEnter and MouseLeave on the window buttons are still active, but when MouseEnter on the window border(?) occurs, the mouse pointer does not change to the resize pointer. This behavior makes sense because of the ComboBox's use of the popup control. The popup control exists independently of the main visual tree and if i.e. the window moves or gets resized, the popup remains fixed floating above the main window.
I have tried using Reflector, to see what the ComboBox is doing, but I have not been able to find what I am looking for. Basically, I do not know if this behavior is coming from the window, the ComboBox, or if it has something to do with the popup. How can I solve this problem?
You're right on in your description there, the popup keeps all action focus until it itself loses focus. If you're trying to change the functionality of the ComboBox you may want to look at creating your own ControlTemplate that behaves differently and does not keep the default action of the popup control.
Hope this helps, not entirely sure what you're trying to do.
I know this question is old, but for anyone coming here looking for the answer, it is to use Mouse.Capture.
The ComboBox sets Mouse.Capture(comboBox, CaptureMode.SubTree) in OnIsDropDownOpenChanged. This ensures that all mouse events are captured by the ComboBox. When the Popup is closed Mouse.Capture(null) releases the mouse capture.