Time picker won't take nulls

[John]

how do i get a TimePicker to take a null value?  not the datetime picker, just the time one.  i have the date one working.

i tried setting it to null

timSatStart.Value = null;

and it didn't work, i also tried binding a nullable datetime from the database to it and it won't work either.

both ways set the time picker to the current time.

thanks.

[Stefan]

Hi John,

Thank you for writing.

RadTimePicker accepts null value in my tests - please refer to the attached video (opens in browser). If you continue experiencing the undesired behavior, please get back to me with the exact steps that I need to follow in order to reproduce it. Alternatively, open a new support ticket and attach a sample project there.
 
Regards,
Stefan
the Telerik team

[John]

Thanks stefan,

I upgraded to 2013 q1 and part of the problem went away.  i can set the .value property and the control blanks out like it should.

i have 2 other problems with this now.  

1.  i still can't bind to the value property with a null value.  it puts the time that the control was dropped on the form into it.

i've tried with 

timSatLunchEnd.DataBindings.Add("Value", _bs, "StdOfficeHours.SatEndLunch", true, DataSourceUpdateMode.OnPropertyChanged, null);

and

timSatLunchEnd.DataBindings.Add("Value", _bs, "StdOfficeHours.SatEndLunch", true, DataSourceUpdateMode.OnPropertyChanged);

2.  how can the end user blank the date out?  if i push backspace or delete in the box, it just goes to 12 AM.  i want it to clear it self out and propagate a null to the datasource.

thanks

EDIT:
i fixed #1 so that just leaves #2.
Thanks.

[Stefan]

Hello John,

Thank you for writing back.

To set the value of the control to null when the Delete key is pressed for example, you can use the KeyUp event of the control:

void radTimePicker1_KeyUp(object sender, KeyEventArgs e)
{
    if (e.KeyData == Keys.Delete)
    {
        radTimePicker1.Value = null;
    }
}

I hope that you find this information useful.
 
Kind regards,
Stefan
the Telerik team

[Matt]

Hi John,

How did you manage to solve the binding issue (ie. problem 1)?

Thanks,

Matt

[John]

it's been a while, but i think the fix was to inherit from their RadTimePicker and then override the value property.  here's what i have for it

public new DateTime? Value
        {
            get
            {
                if (base.Value.HasValue == false) return null;
                var dt = base.Value.Value;
                return new DateTime(dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, 0, 0);
            }
            set
            {
                if (value == null)
                    base.Value = value;
                else
                {
                    var dt = value.Value;
                    base.Value = new DateTime(dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, 0, 0);
                }
            }
        }

[Stefan]

Hello guys,

I just wanted to mention that binding to the Value should be working out of the box with nulls. Please try with the latest version and let me know if you experience any issues, so we can investigate them.
 
Regards,
Stefan
Telerik