Problems Inserting DateTimeStamp Into Database

Here's the error I get trying to run the code posted below..."Prepared statement '(@datestamp datetime,@PrevValue real,@NewValue real,@IPaddress r' expects parameter @datestamp, which was not supplied."
I've tried it without the quotes around the DateTime.Now and also adding the # around them.  Without the quotes, I do get a different error because it doesn't like the spaces in the DateTime text.  Also, the datestamp data in the database is formatted as a datetime (MS SQL Server 2005).
Here's my code:
Private Sub UpdateRefresh()
UpdateConnection.Open()
UpdateDataAdapter.InsertCommand.CommandText = "INSERT INTO dbo.tbDeploy(datestamp," & _
"PrevValue, NewValue, IPaddress, HighCapability, LowCapability, Share) VALUES" & _
"('" & DateTime.Now & "', '" & lblCurrent.Text & "', '" & lblCurrent.Text & _
"', '" & lblIP.Text & "', '" & lblHigh.Text & "', '" & lblLow.Text & "', '" & lblShare.Text & "')"
UpdateDataAdapter.InsertCommand.ExecuteNonQuery()
UpdateConnection.Close()
End Sub