Have Radgrid which have Cellvaluechanged Event
after bind list as grid datasource The Cellvaluechanged doesn't fire ?
rgv_AlternativItem.DataSource = S.ListAlternatives;
rgv_AlternativItem.Refresh();
CellValueChanged should not fire when you rebind the grid. To detect this moment, you can use the DataBindingComplete event.
Related
I have handled SelectionChanged and MouseLeftButtonDown events on WPF listbox. I need to ensure that SelectionChanged event is fired before MouseLeftButtonDown event.
Though the events do occur in desired order but is there any way to enforce that?
Thanks
Is there an event that gets fired when one clicks the ColumnHeader of a Datagrid to trigger a sort on that column ?
Thanks in advance
DataGridColumnHeader is a control itself so you should be able to assign an handler to its MouseLeftButtonDown event programatically.
I am using MVVM for a project and my question relates to using triggers.
The Items property of the TabControl has a property called items and items has an event called CurrentChanging. (TabControl.Items.CurrentChanging)
How do I wire up an event on the child of my main object using triggers?
Thanks
Edit:
This is using WPF and the MVVM-Light toolkit
This was solved by creating a Routed Event that was raised when the CurrentChangingEvent was fired in the code behind.
To make it fire I needed to add in the IsSynchronizedWithCurrentItem = true;
I have a datagrid to which I bind some items. I only allow selecting rows (single item) on this grid.
This grid has a DataGridCheckBoxColumn and a SelectionChanged event.
The problem is that when the user presses a checkbox, it also selects the row (and triggers the SelectionChanged event). This is not the behaviour I would like.
Is there a way I can either prevent the SelectionChanged event from triggering when pressing the checkbox OR detect if was the checkbox column that was pressed in the selectionchanged event?
Thanks!
What about adding a Mouse_Click event on DataGrid row and if it's original source is Checkbox then set e.handled = true otherwise go ahead.
Is there a "BeforeSelectionChanged" event for the combobox? I want to verify some stuff before the SelectedItem property changes.
There's no PreviewSelectionChanged event. Instead of using two way binding, use one way binding to SelectedItem and get updates through command or SelectionChanged event. That way you can in the handler do some verification and even fake a cancel of the selection.
I don't think that there is, unfortunately.
You might be able to use the PreviewLeftMouseDown event and determine if the mouse is over an item in the ComboBox. If it is over an item that isn't the SelectedItem, you know it is about to change.