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Trouble with Null Dates in Script Component

DFCRJ asked
Last Modified: 2008-01-09
My SSIS package connects to an AS 400 where the month, day, year is stored as a decimal. I have a script component that combines the three fields into one and converts to date which is then copied over to my sql into a Pricing table and a destination field know as BeginDate.
It works, until it encounters a null value for the date fields and I receive this message
Conversion from string "0/0/0" to type 'Date' is not valid. And I understand that since the values in the fields are blank.
I thought at first to check the source Month field and grab only values > 0 but I'm told there are circumstances where the begin dates are blank for a reason. So I have to grab all the data regardless if the BeginDate has a valid date (this not user input) I'm just copying from db2 to sql.
Here is my script.

  Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
        Dim Pdate As Date
        Pdate = CDate((Row.PRBEGINMO1 & "/" & Row.PRBEGINDA1 & "/" & Row.PRBEGINYR1))
        If IsDate(Pdate) Then
            Row.BeginDate = CDate(Pdate)
        End If
    End Sub

everything I try comes back wrong or all the dates as strange like 1889/01/19.
Thanks for the help
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