protected virtual void OnSelectionChanging(SelectionChangingEventArgs e)
{
if (SelectionChanging != null)
{
SelectionChanging(this, e);
}
}
private void OnSelectionChanged(object sender, SelectionChangingEventArgs <ALogSummaryVm> e)
{
// Auto scroll
Dispatcher.BeginInvoke(new Action(() =>
{
xamlDataGrid.SelectedItem = e.SelectedItem;
var scrollViewer = xamlDataGrid.FindChild <ScrollViewer>("DG_ScrollViewer");
var itemsCount = xamlDataGrid.Items.Count;
if (itemsCount > 0)
{
var ratio = e.SelectedIndex / (double)itemsCount;
var itemPosition = ratio * (scrollViewer.ScrollableHeight + scrollViewer.ViewportHeight);
var currentPosition = scrollViewer.VerticalOffset;
if (currentPosition < itemPosition &&
itemPosition < (currentPosition + scrollViewer.ViewportHeight))
{
// no need to scroll
}
else if (currentPosition < itemPosition)
{
scrollViewer.ScrollToVerticalOffset(
itemPosition - scrollViewer.ViewportHeight + xamlDataGrid.RowHeight);
}
else
{
scrollViewer.ScrollToVerticalOffset(itemPosition);
}
}
}));
}
private void AssociatedObjectSelectionChanging(object sender, SelectionChangingEventArgs e)
{
e.Cancel = false;
if (CanCancel != null)
{
e.Cancel = CanCancel();
}
}
void cellgrid_SelectionChanging(object sender, SelectionChangingEventArgs args)
{
if (disableCell && args.ActiveRange.Contains(GridRangeInfo.Cell(3, 3)))
{
args.Cancel = true;
}
eventsTxtBox.Text += "\nSelection changing";
}
/// <summary>
/// Invokes the selection changing.
/// </summary>
/// <param name="e">The <see cref="SelectionChangingEventArgs"/> instance containing the event data.</param>
protected void InvokeSelectionChanging(SelectionChangingEventArgs e)
{
EventHandler <SelectionChangingEventArgs> handler = SelectionChanging;
if (handler != null)
{
handler(this, e);
}
}
private void InternalSelectionChanged(Object s, SelectionChangedEventArgs e)
{
var args = new SelectionChangingEventArgs();
OnSelectionChanging(args);
if (args.Cancel)
{
return;
}
OnSelectionChanged(e);
}
private bool HandleItemSelectionChanged(TItem item, bool isSelecting)
{
using (_selectionManagement.Raise())
{
if (_selectionManagement.IsLocked)
{
return(false);
}
if (_selectedItems.Contains(item) && isSelecting)
{
//redundant call, skip
return(true);
}
var args = new SelectionChangingEventArgs(item, isSelecting);
InvokeSelectionChanging(args);
if (args.Cancel)
{
//cancel selection change
item.IsSelected = !isSelecting;
return(false);
}
if (isSelecting)
{
if (((uint)_selectionMode & SingleSelectionMask) != 0)
{
_selectedItems.ForEach(a =>
{
a.IsSelected = false;
});
_selectedItems.Clear();
}
_selectedItems.Add(item);
item.IsSelected = true;
}
else
{
_selectedItems.Remove(item);
item.IsSelected = false;
if (IsSelectionRequired && _selectedItems.Count == 0 && Count > 0)
{
_selectedItems.Add(this[0]);
item.IsSelected = true;
}
}
InvokeSelectionChanged(new EventArgs());
NotifyOfPropertyChange(() => SelectedItem);
return(true);
}
}
private void GrdBanksSelectionChanging(object sender, SelectionChangingEventArgs e)
{
shouldMoveToFirst = true;
var currentItem = (e.Source as RadGridView).SelectedItem as OwnerDataModel;
if (currentItem != null && currentItem.IsDirty && !shouldMoveToPrevious)
{
shouldMoveToFirst = false;
manageOwnersViewModel.ConfirmChangesAsync(currentItem, true, false);
}
}
/// <summary>
/// eq filter selected changed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void eqcombox_SelectionChanging(object sender, SelectionChangingEventArgs e) //eq type
{
// e.Cancel = true;
TComboBox cbx = sender as TComboBox;
int eindex = cbx.iTg;
int filterindex = cbx.SelectedIndex;
m_eqEdit[eindex].eq_Filterindex = (byte)filterindex;
if (onEQControlChangedEvent != null)
{
onEQControlChangedEvent(this, eindex);
}
}
private bool FireSelectionChangingAndSeeIfShouldCancel(object oldItem, object newItem)
{
if (SelectionChanging != null)
{
var changingArgs = new SelectionChangingEventArgs(_selectedItem, newItem);
SelectionChanging(this, changingArgs);
if (changingArgs.Cancel)
{
return(true);
}
}
return(false);
}
public void OnSelectionChanging(SelectionChangingEventArgs e)
{
if (_supress || SelectionChanging == null)
{
return;
}
// Invoke user event handler and revert to
// last selected index if user cancels the change
SelectionChanging(this, e);
if (e.Cancel)
{
_suppress = true;
SelectedIndex = _lastIndex;
_suppress = false;
}
}
public void OnSelectionChanging(SelectionChangingEventArgs e)
{
if (_suppress)
{
return;
}
// Recall the last SelectedIndex before raising SelectionChanging
_lastIndex = (_index >= 0) ? _index : SelectedIndex;
if (SelectionChanging == null)
{
return;
}
// Invoke user event handler and revert to last
// selected index if user cancels the change
SelectionChanging(this, e);
if (e.Cancel)
{
_suppress = true;
SelectedIndex = _lastIndex;
_suppress = false;
}
}
private void RadDataBoundListBox_OnSelectionChanging(object sender, SelectionChangingEventArgs e)
{
e.Cancel = true;
}
private void RadDataBoundListBox_OnSelectionChanging(object sender, SelectionChangingEventArgs e)
{
e.Cancel = true;
}
private void ItemsControl_OnSelectionChanging(object sender, SelectionChangingEventArgs e)
{
e.Cancel = true;
}
private void ItemsControl_OnSelectionChanging(object sender, SelectionChangingEventArgs e)
{
e.Cancel = true;
}