/// <summary>
/// Handles the MouseMove event of the DataGrid control. Implements row rearranging functionality via drag-and-drop. Handles the
/// drag event.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">
/// The <see cref="MouseEventArgs" /> instance containing the event data.
/// </param>
private void dataGrid_MouseMove(object sender, MouseEventArgs e)
{
BindingList <LivePlayerBoxScore> pbsList = Equals(sender, dgvPlayersAway) ? _lpbsAwayList : _lpbsHomeList;
// This is what we're using as a cue to start a drag, but this can be
// customized as needed for an application.
if (e.LeftButton == MouseButtonState.Pressed)
{
// Find the row and only drag it if it is already selected.
var row = findVisualParent <DataGridRow>(e.OriginalSource as FrameworkElement);
if ((row != null) && row.IsSelected)
{
// Perform the drag operation
var selectedPerson = (LivePlayerBoxScore)row.Item;
var finalDropEffect = DragDrop.DoDragDrop(row, selectedPerson, DragDropEffects.Move);
if ((finalDropEffect == DragDropEffects.Move) && (_targetPerson != null))
{
// A Move drop was accepted
// Determine the index of the item being dragged and the drop
// location. If they are difference, then move the selected
// item to the new location.
var oldIndex = pbsList.IndexOf(selectedPerson);
var newIndex = pbsList.IndexOf(_targetPerson);
if (oldIndex != newIndex)
{
pbsList.Insert(newIndex + 1, selectedPerson);
pbsList.RemoveAt(oldIndex);
}
_targetPerson = null;
}
}
}
}
/// <summary>
/// Handles the Drop event of the DataGrid control. Implements row rearranging functionality via drag-and-drop. Handles the drop
/// event.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">
/// The <see cref="DragEventArgs" /> instance containing the event data.
/// </param>
private void dataGrid_Drop(object sender, DragEventArgs e)
{
e.Effects = DragDropEffects.None;
e.Handled = true;
// Verify that this is a valid drop and then store the drop target
var row = findVisualParent <DataGridRow>(e.OriginalSource as UIElement);
if (row != null)
{
_targetPerson = row.Item as LivePlayerBoxScore;
if (_targetPerson != null)
{
e.Effects = DragDropEffects.Move;
}
}
}
