Preserving NULL values in a Double Variable
- by Sam
Hi,
I'm working on a vb.net application which imports from an Excel spreadsheet.
If rdr.HasRows Then
Do While rdr.Read()
If rdr.GetValue(0).Equals(System.DBNull.Value) Then
Return Nothing
Else
Return rdr.GetValue(0)
End If
Loop
Else
I was using string value to store the double values and when preparing the database statement I'd use this code:
If (LastDayAverage = Nothing) Then
command.Parameters.AddWithValue("@WF_LAST_DAY_TAG", System.DBNull.Value)
Else
command.Parameters.AddWithValue("@WF_LAST_DAY_TAG", Convert.ToDecimal(LastDayAverage))
End If
I now have some data with quite a few decimal places and the data was put into the string variable in scientific notation, so this seems to be the wrong approach. It didn't seem right using the string variable to begin with.
If I use a double or decimal type variable, the blank excel values come across as 0.0.
How can I preserve the blank values?
Thanks
