Default Start Date in UI for WinForms

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Default Start Date

36 Answers 477 Views

Calendar, DateTimePicker, TimePicker and Clock

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

36 Answers, 1 is accepted

answered on 31 Aug 2009, 02:22 PM

Hi Emre Ozan Alkan,

You can modify the Value property of RadDatetimePicker and it will display the Value which you have entered. For example, you can do the following:

RadDateTimePicker dateTimePicker = new RadDateTimePicker();
this.Controls.Add(dateTimePicker);
dateTimePicker.Value = new DateTime(2009, 5, 1);

Please write me back if you need more information.

I hope this helps.

Greetings,
Boyko Markov
the Telerik team

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answered on 01 Sep 2009, 10:02 AM

Thanks for that solution it works well. Actually I have shared form shown up after new user register that user fill his information if he is new and save the values to our business object.But there is also search users function that we find user and open same form and show his information that entered before, with data binding. If new user register and show the form, all texts, combo boxes etc are empty default also no date in date time picker.As your solution If I set datetimepciker.value = DateTime.Now(), thats fine with new registration and start from todays date(also show the time in its combobox but anyway) but when we also look the current users information their birthday is change with todays date as u assume :). Will you have some issue or tickets or request from users for that problem ? Cause defaultly starts from 1900 ? unless your solution used, but thats also puts value to combobox which may not good for some people. Thanks.

answered on 04 Sep 2009, 07:29 AM

Hello Emre Ozan Alkan,

Thank you for your feedback. Could you please send me a sample project which reproduces the issue as I have not been able to reproduce it locally? This could be related to something specific to your project so any information about this would be very helpful. In the previous ticket I have just told you the way to modify the Value property which will automatically set the correct Value. I'm looking forward to your reply.

All the best,
Boyko Markov
the Telerik team

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answered on 16 Jun 2010, 04:31 AM

I am using the Raddatetimepicker in my form.
I want the control to display nothing in it initially.
When user clicks to select the date, he is seeing some month in 1900 !! !!
Now user is forced to keep on clicking for 10 minutes to come to the todays date or something within a year 's date from today.

I want the control to show initially no date ...
but when user clicks it.. the pop up should show the drop down calender to show todays month .. so that user can select any date within this month or change the months closer to this month etc...i.e any other month within the same year...
If the user does't select any date and closes the popup then the text box should not have any date and should show empty value.
How to do it ??

I guess Boyko Markov 's posting of august 31, 2009 will change the value to (2009, 5, 1). I dont' want that to happen....
any suggestion..

IK

Accepted

answered on 21 Jun 2010, 02:59 PM

Hello Imran,

Thank you for writing.

The Value property of RadDateTimePicker is of type DateTime. Since DateTime is a Value Type (but not a Reference Type), you can't assign null or Nothing to it. The default behavior of RadDateTimePicker is to get the MinDate value and set it to the NullDate property. By default this value is 1/1/1900.

In order to get the current month in the RadCalendar dropdown, you should access and manipulate the RadCalendar instance. Please consider the following code snippet:

public Form1()

{

InitializeComponent();

this.radDateTimePicker1.SetToNullValue();

this.radDateTimePicker1.DateTimePickerElement.Opened += new EventHandler(DateTimePickerElement_Opened);

}

void DateTimePickerElement_Opened(object sender, EventArgs e)

{

RadDateTimePickerCalendar calendarBehavior = this.radDateTimePicker1.DateTimePickerElement.GetCurrentBehavior() as RadDateTimePickerCalendar;

RadCalendar calendar = calendarBehavior.Calendar as RadCalendar;

calendar.FocusedDate = DateTime.Now;

}

I hope this helps.

Kind regards,
Stefan
the Telerik team

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answered on 02 Jul 2010, 07:38 AM

Carol Watson how about using Telerik code converter ? => http://converter.telerik.com/

This converts Stefan's code snippet to =>

Public Sub New()
   InitializeComponent()

   Me.radDateTimePicker1.SetToNullValue()
   Me.radDateTimePicker1.DateTimePickerElement.Opened += New EventHandler(DateTimePickerElement_Opened)
End Sub

Private Sub DateTimePickerElement_Opened(sender As Object, e As EventArgs)
   Dim calendarBehavior As RadDateTimePickerCalendar = TryCast(Me.radDateTimePicker1.DateTimePickerElement.GetCurrentBehavior(), RadDateTimePickerCalendar)
   Dim calendar As RadCalendar = TryCast(calendarBehavior.Calendar, RadCalendar)
   calendar.FocusedDate = DateTime.Now
End Sub

'=======================================================
'Service provided by Telerik (www.telerik.com)
'Conversion powered by NRefactory.
'Twitter: @telerik, @toddanglin
'Facebook: facebook.com/telerik
'=======================================================

answered on 02 Jul 2010, 04:32 PM

Hi Emre Ozan Alkan,

Here is the ported code to VB:

Imports Telerik.WinControls.UI

Public Class Form1

Public Sub New()

InitializeComponent()

RadDateTimePicker1.SetToNullValue()

AddHandler RadDateTimePicker1.DateTimePickerElement.Opened, AddressOf DateTimePickerElement_Opened

End Sub

Sub DateTimePickerElement_Opened(ByVal sender As Object, ByVal e As EventArgs)

Dim calendarBehavior As RadDateTimePickerCalendar = TryCast(Me.RadDateTimePicker1.DateTimePickerElement.GetCurrentBehavior(), RadDateTimePickerCalendar)

Dim calendar As RadCalendar = TryCast(calendarBehavior.Calendar, RadCalendar)

calendar.FocusedDate = DateTime.Now

End Sub

End Class

Kind regards,
Stefan
the Telerik team

Accepted

answered on 30 Sep 2010, 07:45 AM

Hello Sheraz,

In order to show today's button you can do the following:

var datePickerCalendarBehavior =

this.radDateTimePicker.DateTimePickerElement.GetCurrentBehavior() as RadDateTimePickerCalendar;

calendar = datePickerCalendarBehavior.Calendar;

calendar.AllowMultipleSelect = false;

calendar.ShowFooter = true;

calendar.CalendarElement.CalendarStatusElement.Text = string.Empty;

datePickerCalendarBehavior.DropDownMinSize = new Size(250, 250);

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga

answered on 27 Oct 2010, 04:23 PM

Hey! I am smart enough to figure out how to do a Today event handler once I know how to do Clear. :-)

That was not my question.

I want to know how to CLOSE the drop down when the user clicks the button.

I tried this, and it makes the calendar go away, but then it won't come up correctly the next time. There must be a way to tell the calendar to close properly?

AddHandler calendar.ClearButton.Click,

Sub()

dt.SetToNullValue()

calendar.Visible = False

End Sub

Is there a way to close the datetime picker drop down from the buttons properly without having to make it invisible?

Accepted

answered on 27 Jun 2012, 06:41 AM

Hi i am using raddatetimepicker verson=2011.1.519.35 in asp.net i want to set todays date to it...
it is possible with ajaxcalender extender like

function clientShowing(sender, args) {

if (new Date($get("HiddenField1").value) != null) {

sender.set_todaysDate(new Date($get("HiddenField1").value));

}

}

<form id="form1" runat="server">

    <div>

        <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">

        </asp:ToolkitScriptManager>

        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

        <asp:calendarextender ID="CalendarExtender1" runat="server" Enabled="True" Format="dd/MM/yyyy"

            TargetControlID="TextBox1" OnClientShowing="clientShowing" 

            PopupPosition="BottomLeft">

        </asp:calendarextender>

        <asp:HiddenField ID="HiddenField1" runat="server" />

        

    </div>

    </form>

it means whatever date in hiddenfield, i want to set it to raddatetimepicker as today date...
how to do it for asp.net...