Winforms 2.0. Stick a DateTimePicker on a form. It defaults to TODAY. Click on the dropdown arrow to show the Calendar, and click on TODAY. The ValueChanged event DOES FIRE, even though it is already set to today.
What i would like to do is replicate this same functionality - I would like to reset it (in code) to today, and next time i click on today via the Calendar i want that ValueChanged event to fire (just like it did the first time).
If the above is not possible, i want some event that always fires whenever i pick a date on the Calendar (regardless if there is a change or no change).
Sounds really simple, surely someone has the answer?
What you're seeing there is a side-effect of the fact that DateTimePicker stores the time component of its value as well as the date.
So when your form first initializes, the DateTimePicker is being initialized with DateTime.Now. When you then select "Today" from its drop-down calendar, you're changing the value to DateTime.Today.
If you don't care about the time component and/or you're always reading the value as dateTimePicker1.Value.Date, then you could initialize the control in code with DateTime.Now and the ValueChanged event will fire when the user selects Today from the calendar. Otherwise you might consider catching the CloseUp event, which is fired whenever the calendar control is closed (regardless of whether the value changed).
Im not a win form programmer, but see if there is a Day_Render event.
That should fire for each day...at least there is one for web based development, but I would think it is the same. So look for Render() event.
Related
I'm using react FullCalendar component and I need to change the background color of an event as it becomes the "CurrentEvent" (when the now indicator is over it).
I'm able to do that when I load the screen, but I also need to do it when the screen is open and the "current event" changes as the time passes.
The way I was thinking about doing that is by using any callback indicating this situation and then changing the style, but I'm not finding any callback that points out this situation.
Any ideas? Thank you.
On a Codename One lightweight date pickers, the user has four buttons in the top, like in the following screenshot.
I suppose the tapping of the second, third and fourth buttons are detected by the .addActionListener() (please correct me if I'm wrong)... but I need to detected also the tapping of the "Cancel" button. How can I run some code when the user taps "Cancel"?
We don't provide a way to detect cancel since we can't consistently detect it on native. As a workaround you can listen to the click on the picker button and unless you get a selection it would mean that the action was canceled.
Alternatively we can add a feature like this for the lightweight picker only. If you need that you can file an RFE on that.
I overcame this by comparing the newly selected picker value to the previously stored value. If it’s the same, I consider it a cancel.
I am using Angular UI Calendar to display some events on the calendar. Whenever the calendar is loaded for the 1st time, the events extend to next date or shown on some other Date.
However when I change the View(Day/Week) and come back again to Month view, then events are displayed fine. Similarly, after changing month and coming back again to the current month , the events are displayed correctly.
Also, I've noticed that the calendar height also increases by 95px after changing the view(when displayed correctly).
Why is this occuring. How can I render events correctly for 1st time?
The problem was with CSS. Solved it.
If the event is one hour long, you can have the alert start one hour after the event. However, if you then change the event to be two hours long, the alert will then occur in the middle of the event unless you also edit the timing of the alert.
Another way to accomplish this is to have another event right after the first event, and have the alert go off at the start of the second event. However, each time you change the time of the first event, you'll also need to change the time of the second.
What I am looking for is a way to have the trigger time be the end of the event, even if you subsequently change the duration of the event, without any additional steps. Does anyone know of a way to accomplish this?
I have a WPF DatePicker, and like any datepicker, it has a built-in calendar that you can open by clicking on the small calendar icon.
this calendar is put in a popup menu, so that it behaves like one, i.e.: once it is opened, there are 2 ways to close it:
Validate you choice (click on a date with the mouse, hit "Enter" with a date highlighted, etc...)
cancel (hit "Echap", click outside the popup, etc...)
My problem is, I need to know which one was used, and I can't seem to find a way to do this.
Right now I listen to the "CalendarClosedEvent" but it doesn't tell me How the calendar was closed.
I also used the "PreviewKeyDownEvent" to trap the "Echap" key, which works well, except it does not cover the case when the user clicks outside the calendar to close it.
Is there a way to do this? if so, what is it?
(NB: I'd be happy with a generic answer about the popup menu object and not the calendar object in the datePicker)
For the DatePicker at least, you can set the SelectedDate to null (which is actually the default so, just leave it). Then the SelectedDateChanged fires any time the user clicks inside the control.
This is the only thing I could find to mark a difference. Hope it helps.