Conversion from type 'DBNull' to type 'Date' is not valid

Question

I am getting this exception from the following VB.NET code for only certain months:

System.InvalidCastException: Conversion from type \'DBNull\' to type \'Da         


        

Answer 1

I use a sub (different for each datatype) to get data from a Datareader, using the index instead of the name though:

#If Access Then
 _
Friend Function GetDbStringValue(ByVal Dr As OleDbDataReader, ByVal nr As Integer) As String
#Else
 _
Friend Function GetDbStringValue(ByVal Dr As MySqlDataReader, ByVal nr As Integer) As String
#End If
    If IsDBNull(Dr.Item(nr)) Then
        Return ""
    Else
        Return Dr.GetString(nr).TrimEnd
    End If
End Function