Time picker won't take nulls in UI for WinForms

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Time picker won't take nulls

6 Answers 31 Views

Calendar, DateTimePicker, TimePicker and Clock

This is a migrated thread and some comments may be shown as answers.

6 Answers, 1 is accepted

answered on 27 Feb 2013, 12:14 PM

2013-02-27-1409.zip

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

Q3'12 SP1 of RadControls for WinForms is out now. See what's new.

answered on 27 Feb 2013, 01:41 PM

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.

Accepted

answered on 04 Mar 2013, 07:45 AM

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

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answered on 10 Jul 2013, 04:47 PM

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);

}