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VB6 validate if date exist

Posted on 2013-06-24
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Last Modified: 2013-06-24
Hi all,

I would like to validate if all dates in column 12 of my MSHFlexgrid.

The thing is that the dates have this format: yyyymmdd
Ex:20130631

in the example above, June 2013 end on day 30, not 31.

When it found a date that does not exist, it will put on column 1 of the same row "date not valid"

How can i do that?

Thanks again for your help
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Question by:Wilder1626
2 Comments
 
LVL 76

Accepted Solution

by:
GrahamSkan earned 500 total points
ID: 39271432
Here is one way:
Sub Validate()
Dim strDate As String
Dim dt As Date

strDate = "20130631"
dt = DateSerial(CInt(Mid(strDate, 1, 4)), CInt(Mid(strDate, 5, 2)), CInt(Mid(strDate, 7, 2)))
If strDate = Format(dt, "yyyymmdd") Then
    MsgBox "Date is valid"
Else
    MsgBox "Date is not valid"
End If
End Sub

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Author Closing Comment

by:Wilder1626
ID: 39271619
Hi

Many thanks.

This is perfect

  Dim strDate As String
    Dim dt As Date
    Dim i As Long
    For i = 1 To MSHFlexGrid1.Rows - 1

        strDate = MSHFlexGrid1.TextMatrix(i, 12)
        dt = DateSerial(CInt(Mid(strDate, 1, 4)), CInt(Mid(strDate, 5, 2)), CInt(Mid(strDate, 7, 2)))
        If strDate = Format(dt, "yyyymmdd") Then

        Else
            MSHFlexGrid1.TextMatrix(i, 1) = MSHFlexGrid1.TextMatrix(i, 1) & " / " & "BAD EFFECTIVE DATE"
        End If
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