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Validating date in vb net

validating date in vb net-19

'define public var Protected Start Date As String Protected End Date As String 'define other var Dim s Date = Request. Form("end Date Tbx") Dim r As Regex r = New Regex("^(0[1-9]|[1-9]|1[012])/(0[1-9]|[1-9]|[12][0-9]|3[01])/20\d\d$") 'run validation If s Date = "" Then start Date Lbl.

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After the trial period the Code VBA software stops working unless you decide to buy a license. Set Error(mtb App1, "The data you supplied must be a valid date in the format mm/dd/yyyy.") Else ' Now that the type has passed basic type validation, enforce more specific type rules. Set Error(mtb App1, "The data you supplied must be today's date") e. The software can be used with Office 2000 - 2016, both 32 bit and 64 bit versions, Windows XP (SP3), VISTA, Windows 7, Windows 8 and Windows 10.Uses NET Framework 4.0 - if missing it is automatically installed by setup program.Came across a small issue - I have a function where I pass DATE as String.

This Date then gets passed as parameter to a stored procedure where I validate it, and it returns a value (0,1) whether it's valid or not. Dim input As String = "13/13/2016" Dim dt As Date Time If Date Time.

Private Sub txt Hire Date_Validated(By Val sender As Object, By Val e As System. Validated Dim date String As String = txt Hire Date.

Text Dim formats As String = "MM/dd/yyyy" Dim date Value As Date Time If Date Time.

It also has links to the documentation for the Date Time. Try Parse Exact methods, which you may find useful. So, "DD-MON-YYYY" is invalid, "dd-MM-yyyy" may be what you are after.

But, this means the user would always have to enter 2 digits for the day and month as in "" or "" which they are often not inclined to do, and seems harsh to impose.

Dim str Foo As String = "19-7-2014" ' d-MM-yyyy Dim str Bar As String = "" ' dd-MM-yyyy Dim str July4 As String = "4-7-2014" ' d-M-yyyy ' several possible format styles Dim formats() As String = Dim this Dt As Date Time ' this should work with all 3 strings above If Date Time.