public bool IsNullOrEmpty(string columnName)
{
try
{
if (dr_Oledb != null)
{
return String.IsNullOrEmpty(GetString(dr_Oledb.GetOrdinal(columnName)));
}
else
{
return String.IsNullOrEmpty(GetString(dr.GetOrdinal(columnName)));
}
}
catch (Exception err)
{
_lastSqlError = err;
return false;
}
}