// GetSingleDTO
protected static T GetSingleDTO <T>(ref SqlCommand command) where T : DTOBase
{
T dto = null;
try
{
command.Connection.Open();
SqlDataReader reader = command.ExecuteReader();
if (reader.HasRows)
{
reader.Read();
DTOParser parser = DTOParserFactory.GetParser(typeof(T));
parser.PopulateOrdinals(reader);
dto = (T)parser.PopulateDTO(reader);
reader.Close();
}
else
{
// Whever there's no data, we return null.
dto = null;
}
}
catch (Exception e)
{
throw new Exception("Error populating data", e);
}
finally
{
command.Connection.Close();
command.Connection.Dispose();
}
// return the DTO, it's either populated with data or null.
return(dto);
}
// GetDTOList
protected static List <T> GetDTOList <T>(ref SqlCommand command) where T : DTOBase
{
List <T> dtoList = new List <T>();
try
{
command.Connection.Open();
SqlDataReader reader = command.ExecuteReader();
if (reader.HasRows)
{
// Get a parser for this DTO type and populate
// the ordinals.
DTOParser parser = DTOParserFactory.GetParser(typeof(T));
parser.PopulateOrdinals(reader);
// Use the parser to build our list of DTOs.
while (reader.Read())
{
T dto = null;
dto = (T)parser.PopulateDTO(reader);
dtoList.Add(dto);
}
reader.Close();
}
else
{
// Whenver there's no data, we return null.
dtoList = null;
}
}
catch (Exception e)
{
throw new Exception("Error populating data", e);
}
finally
{
command.Connection.Close();
command.Connection.Dispose();
}
return(dtoList);
}