CODEWITHSUNDEEP
vb.netwinformsdatepicker
jmease
jmease

Reputation: 23

Make VB.Net DatePicker Required

I have a datepicker in a vb.net clickonce application. I need to make sure that in order to use the application that selecting a valid date is required. Ideally, I would be able to set the value of the datepicker to null and then programatically create Try Catch logic based on datepicker1.value still being null. Unfortunately, it will not allow me to assign a null or blank value to the datepicker. I cannot create my logic based on any real values of the datepicker because who's to say the value picked is not valid. I've tried setting the value to some outrageous date that no one would pick for the application like 1/1/1970, but then the datepicker opens up at 1/1/1970 and drops that date in as soon as it gains focus. I need a way to validate whether or not someone has selected a date, but am stuck and can't find any real help online. I am not looking to set the customformat = "", so please do not respond with that solution. I need the actual value to be blank or something I can run validation against to know that the user has in fact selected a date.

Upvotes: 0

Views: 1188

Answers (2)

codeConcussion
codeConcussion

Reputation: 12938

Set the ShowCheckBox property to true. That will make the control look like this...

DateTimePicker

When the user selects a date, it will check the checkbox. Then when you need the value...

If datePicker.Checked Then
    'user has selected a value
Else
    'user has NOT selected a value
End If

Upvotes: 2

aphoria
aphoria

Reputation: 20179

Can you use the ValueChanged event to set a flag to tell you they've clicked on a date?

UPDATE

You could also use the OnClick method to set a flag to verify the user actually clicked on the DateTimePicker.

Upvotes: 0

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