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CalendarView in UWP C# showing wrong day

I have CalendarView on two pages.
First page is used to add records to calendar by assigning the selected date to the database record.
Second page is used to show all records assigned to the selected date.
Now, when on the first page I assign date to the product by clicking the date manually, on the second page product is shown correctly when selected date that corresponds to the products date.
However, when on the first page I add dates to the products programmatically, on the second page, these products are shown one day before than they should.
I have no idea what is happening. I will post code if you want to check something.
THe problem is strange, becaue on one calendar these automatically added dates are shown for example on 5th April, but on the second calendar they are listed under 4th April.
Is that the globalization of two calendars problem?

Locale(globalization ) would be a potential problem. But having code would help us to provide you more info.

I have managed to resolve the problem. It was in deed issue with DateTimeOffset/DateTime values.
I changed every instance of Date I found in the code by appending it with
.LocalDateTime
.
This way I got the correct local date of each DateTimeOffset object and data is added to/ pulled from the Calendar correctly.

To Display only current date selected in datetime picker

I have a datetime picker in windows form. When i am selecting a date it shows the last selected date and current date. But i want to shows only current date always. It should not show last selected date and current date(both) on the selection dropdown.
public FieldControl()
{
InitializeComponent();
dtpDate.Value = DateTime.Now;
}

Hello Kumar is right,
but what is sense of selectable date and time component where is only one option to select?
Isn't better to make datetimepicker disabled? At least it's less confusing for user and by default actual date is selected when datetimepicker is dispayed.
Jaroslav

Try this :
you can get just today's date as a DateTime using the Today property:
dtpDate.Value = DateTime.Today;
if you want to show only current date in your datepicker then use this code:
dtpDate.MinDate = dtpDate.MaxDate = DateTime.Now;
For more information
Refer this link

You can't do it on the picker. But you can fake it. Resize the dateTimePicker so it only shows the pick button. Then place it next to a textbox. In the onClose event you write the selected value to the textbox, and set the value of the dateTimePicker back to Today.

Make dates in datetimepicker grey?

Im writing a hotel booking system with VS2012 which uses ms sql and in the booking i have two datetimepicker controls. When i select a date in the first one the date automatically gets transfered to the second datetimepicker. I now want when the user opens up the second datetimepicker not being able to select a date that is before the first date from the first datetimepicker. I dont want to use if method displaying a message i just want the dates to be "greyed" out.
Is that possible and how?
*edit (screenshot of how i would like it to be viewed or similar http://i43.tinypic.com/2zpimvs.jpg )
*edit2: its not the control(dateTimePicker2) it self i want to grey out, its the dates inside it that is smaller then the date selected in dateTimePicker1. The screenshot provided is in the area of what im looking for.

You could try this:
DateTimePicker2.MinValue = Convert.toDateTime(DateTimePicker1.SelectedDate);
EDIT
Standard controls don't support the grey-out of a datetimepicker. If you want to do this, you need to subclass the datetimepicker or look at a premade control like a DateEdit from devexpress (i think they even have free controls).

Change the second datepicker MinDate to first DatePicker selected date .. like below ..
rdpDatePicker2.MinDate = rdpDatePicker1.SelectedDate.Value;

Telerik RadCalendar ASP.NET control reset date

I use Telerik RadCalendar ASP.NET control. How I can in code reset selected date? (Set no selected Date)

From their site:
http://demos.telerik.com/aspnet-ajax/calendar/examples/programming/clientsideapi/defaultcs.aspx
unselectDate(date); //Takes a triplet representation of a date and if valid deselects it in the calendar.
unselectDates(dates); //Takes an array of triplets representing dates and if valid deselects them in the calendar.
First you can find what dates are selected with get_selectedDates()
Then put them in the unselect method.
var selectedDates = get_selectedDates();
unselectDates(selectedDates);
If you dont know what dates are selected maybe you can reload the calendar.

If you want to clear the selection server-side then this should work:
RadCalendarObject.SelectedDates.Clear();

How to set win forms datetime picker to have no default value?

I am implementing search functionality in WinForms and I search by date range. Thus there are dateForm and dateTo date pickers on the form. By default their values are date time now() and if user do not touch date time pickers at all he will not get any results. Because search will be performed between now() and now(), also if I put min and max values as default it would solve first problem but there would be another problem if user wants to search by date range, he would need to click many times to come from default 1700 (something) to now()
Any suggestions to solve this problem?
Thanks a lot.

You can't have a valueless datepicker with the out-of-the-box control. Why? It is backed by DateTime, which is non-nullable.
You can disable it with another control, or leave it disabled until the user clicks (bad UX for keyboard enthusiasts, like myself), or find or create (!) one that uses Nullable<DateTime>.
Edit:
In response to your comment, yes, you can do this; in fact, I've done it.
use fields or private properties to hold the 'from' and 'to' dates, instead of reading them from the dtp, and set their defaults to min and max
use a boolean flag to indicate when you are manipulating the dtp value in code, and in the dtp's ValueChanged event, set the flag's value to false
in the form load event, set the flag to true and dtp value to today's date
also in the ValueChanged event, set the from and to fields to the values of the dtps (you have to set both when either dtp changes, because the user will see the other one as set to today, but the search value will still be min or max).
The problems with this is that once the user has changed the date selection, she can't easily go back to "all dates." Furthermore, the user can't select "today only" without first changing one of the dates and then changing it back.
I think the best solution for you is to have a checkbox, "search by date range," which either enables the two dtps that are otherwise disabled, or displays the dtps that are otherwise hidden. Then you search from min to max unless the checkbox is checked, and when the checkbox is checked, you use the two dtp dates no matter what they are. Don't forget to deal with to and from being out of order, which can be done in several ways.

Have a look here for a nullable datetimepicker on CodeProject, in fact there are a few here.

Put a check box next to each datetime picker, and use the check box to enable/disable the datetime picker.
So if the datetimepicker is disabled, you know the user do not want to specify the datetime.

You can set DateDateTimePicker.Format property to Custom.
Then set DateDateTimePicker.CustomFormat property to your default text (e.g "N/A" or a space " ")
After the user has selected a certain date value, you should set back the format property to short etc.
Hope this helps!

The DateTimePicker has a ShowCheckBox property that "Determines whether a check box is displayed in the control. When the box is unchecked, no value is selected."
I've used something like the following for date range selectors that can be empty. One user told me that at first, she didn't know what the check box was for, but she figured it out on her own after using it a couple of times.
public DateTime? EndDate
{
get
{
DateTime? returnValue = null;
if (endDateDateTimePicker.Checked)
{
returnValue = endDateDateTimePicker.Value;
}
return returnValue;
}
set
{
if (value.HasValue)
{
endDateDateTimePicker.Checked = true;
endDateDateTimePicker.Value = value.Value;
}
else
{
endDateDateTimePicker.Checked = false;
}
}
}