private void ReorderColumns()
{
_lockGridColumnsCollectionChanged = true;
for (int c = 0; c < Grid.Columns.Count; c++)
{
var column = Grid.Columns.IndexOf(col => SortBehavior.GetFixedOrder(col) == c);
if (column == -1)
{
break;
}
Grid.Columns.Move(column, c);
}
int i = 0;
lock (ItemsSource)
{
foreach (string columnData in ItemsSource)
{
for (int j = i; j < Grid.Columns.Count; j++)
{
var column = Grid.Columns[j];
if (GetColumnId(column) == columnData)
{
Grid.Columns.Move(j, i + _staticColumnsCount);
i++;
break;
}
}
}
}
_lockGridColumnsCollectionChanged = false;
}
private void gridView_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (!_lockGridColumnsCollectionChanged && e.Action == NotifyCollectionChangedAction.Move)
{
var oldIndex = e.OldStartingIndex - _staticColumnsCount;
var newIndex = Math.Max(0, e.NewStartingIndex - _staticColumnsCount);
if (oldIndex >= 0)
{
var collection = (ObservableCollection <string>)ItemsSource;
collection.Move(oldIndex, newIndex);
}
else if (SortBehavior.GetFixedOrder(Grid.Columns[e.NewStartingIndex]) != -1)
{
ReorderColumns();
}
}
}
