Can we add a nullable date picker?

[davidbuckleyni]

The default date picker in Maui is not nullable; that is, it must have some value for form validation. Would it be possible to consider creating a toolkit control based on the existing date picker, but with the option to be nullable?

Currently, there are workarounds, but we strongly feel that having a control that is nullable upon form submission is essential.

We did have a discussion at time of maui release but the default control was so intermingled with date vars everywhere else made it hard to implement.

[bijington]

This is far from anything production worthy but could you achieve this by wrapping something like:

public class NullableDatePicker : ContentView
{
    readonly Label label;
    DateTime? date;

    public DateTime? Date
    {
        get => date;
        set
        {
            date = value;
            label.Text = value?.ToShortDateString();
        }
    }

    public NullableDatePicker()
    {
        DatePicker picker = new();
        picker.TextColor = Colors.Transparent;

        label = new Label
        {
            InputTransparent = true
        };

        picker.DateSelected += (sender, e) =>
        {
            Date = e.NewDate;
        };

        Button clearButton = new Button
        {
            Text = "X"
        };
        clearButton.Clicked += (sender, e) =>
        {
            Date = null;
        };

        Content = new Grid
        {
            ColumnDefinitions =
            {
                new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) },
                new ColumnDefinition { Width = new GridLength(1, GridUnitType.Auto) }
            },
            Children =
            {
                picker,
                label,
                clearButton
            }
        };

        Grid.SetColumnSpan(picker, 2);
        Grid.SetColumn(label, 0);
        Grid.SetColumn(clearButton, 1);
    }
}

[acaliaro]

dotnet/maui#13647

[CliffAgius]

Closed as answered if you follow the thread from @acaliaro it is with the main MAUI team having an open PR, if closed in error please let us know to re-open.