public static async Task ShowAsync(INavigation navigation, FlexGrid grid)
{
var form = new ColumnLayoutForm();
form._grid = grid;
form._completion = new TaskCompletionSource <bool>();
var columns = new ObservableCollection <ColumnLayoutItemViewModel>();
foreach (var column in grid.Columns)
{
columns.Add(new ColumnLayoutItemViewModel(columns, column));
}
form.BindingContext = columns;
await navigation.PushModalAsync(form, true);
try
{
await form._completion.Task;
for (int i = 0; i < columns.Count; i++)
{
var cvm = columns[i];
var currentIndex = grid.Columns.IndexOf(cvm.Column);
if (currentIndex != i)
{
grid.Columns.Move(currentIndex, i);
}
if (cvm.IsVisible != cvm.Column.IsVisible)
{
cvm.Column.IsVisible = cvm.IsVisible;
}
}
}
catch { }
}
private async void OnEditColumnLayout(object sender, EventArgs e)
{
await ColumnLayoutForm.ShowAsync(Navigation, grid);
}
