Web Forms :: Adding Record With Null Date Field With LinqToSql

May 14, 2010

Dim newMem As New Subscription With { _
.First = txtName.Text, _
.Email = txtEmail.Text, _
.dateLastEmail = "1/1/1980", _
.subDate = Now}
dbp.Subscriptions.InsertOnSubmit(newMem)
dbp.SubmitChanges()

The table contains a field called conDate that is nullable, and in this case I want it to remain null. It will get a date value later, when a confirmation is received. If I add .conDate = "1/1/1980", _ I can successfully add the record, but without that line I get System.InvalidOperationException: Nullable object must have a value. I tried this:

Dim DateConfirm As System.Nullable(Of DateTime) = Nothing and adding
.conDate = DateConfirm, _ but that didn't help either. How can I add a record without giving a date to a field I want to remain null?

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