Date Picker

  • Thread starter Thread starter Rethish
  • Start date Start date
R

Rethish

Hi All,
I am developing an application in VB.net. I am using .Net Datetime
picker control to manage the date. But I am not able to assign null/Empty
value to the control. I found the property "Checked" to work with this
control..But I cannot use this property for making null dates..
Is there any way to solve this problem?.

Expecting any help or suggestions?

Regards,
Rethish
 
Rethish said:
Hi All,
I am developing an application in VB.net. I am using .Net Datetime
picker control to manage the date. But I am not able to assign null/Empty
value to the control. I found the property "Checked" to work with this
control..But I cannot use this property for making null dates..
Is there any way to solve this problem?.

Expecting any help or suggestions?
Click to expand...


What is a "Null" date? ... 1932 1:30 am, 2003 2:39 pm? What is a "Null"
Integer? The point is that DateTime (and Date) is a structure in .NET, not a
Class. This means that there is no true "Null" or Nothing state for the
object, there is only an initial state: 1/1/1900 12:00 AM. So if the object
is = the initial state, then it is empty. You can get around this by
setting the date = New Date( ) or by using the Checked property.

'// Check for a "null" or empty date:
If DateTimeControl.Value.Equals(New Date()) Then
'// the date is empty/null/nothing
End If

'// Set a null/empty date:
DateTimeControl.Value = New Date( )


HTH

~
Jeremy
 
Hello,

Rethish said:
I am developing an application in VB.net. I am using .Net
Datetime picker control to manage the date. But I am not
able to assign null/Empty value to the control. I found the
property "Checked" to work with this control..But I
cannot use this property for making null dates..
Click to expand...

Set the 'ShowCheckBox' property to 'True'. If the checkbox is unchecked,
the control can be treated as empty.
 
Hi Jeremy,
When I am trying to set the date as empty for the DateTime picker, I got
the error like the date should be in between min and Max date of the date
picker.
How can I assign DateTimeControl.Value = New Date( ) for a date picker..?

Rethish
 
Rethish said:
Hi Jeremy,
When I am trying to set the date as empty for the DateTime
picker, I got
the error like the date should be in between min and Max date of the
date picker.
How can I assign DateTimeControl.Value = New Date( ) for a date
picker..?
Click to expand...

I haven't used the DateTimePicker yet, and maybe the question is better for

microsoft.public.dotnet.framework.windowsforms.controls

(because it is not VB.NET specific) but I'd say that the statement
concerning min/max dates should be followed. Whenever you create a new Date,
the default value is the 1st of january in the year 0001. That's probably
not in the range from DateTimePicker.MinDate to DateTimePicker.MaxDate.
 
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