// use ordinals to speed up access to DataReader
// links:
// docLink: http://sql2x.org/documentationLink/327451c3-64a8-4de8-b359-76742d634497
// parameters:
// reader: IDataReader from SQLClient
public void Populate(IDataReader reader, CategoryTreeDataOrdinals ordinals)
{
if (!reader.IsDBNull(ordinals.ProductCategoryId))
{
ProductCategoryId = reader.GetGuid(ordinals.ProductCategoryId);
}
if (!reader.IsDBNull(ordinals.ProductCategoryParentId))
{
ProductCategoryParentId = reader.GetGuid(ordinals.ProductCategoryParentId);
}
if (!reader.IsDBNull(ordinals.ProductCategoryCode))
{
ProductCategoryCode = reader.GetString(ordinals.ProductCategoryCode);
}
if (!reader.IsDBNull(ordinals.ProductCategoryName))
{
ProductCategoryName = reader.GetString(ordinals.ProductCategoryName);
}
}
/// <summary>Get categories</summary>
/// <cardinality>Many</cardinality>
public List <CategoryTreeData> CategoryTree()
{
var ret = new List <CategoryTreeData>();
string sql = @"
select
pc.product_category_id,
pc.product_category_parent_id,
pc.product_category_code,
pc.product_category_name
from product_category as pc
where pc.product_category_became_id is null
and right(pc.product_category_name, 1) != '-'
order by pc.product_category_code
,pc.product_category_position
";
using (var conn = new SqlConnection(ConfigurationManager.AppSettings["Conn"])) {
conn.Open();
using (var command = new SqlCommand(sql, conn)) {
IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);
var ordinals = new CategoryTreeDataOrdinals(reader);
while (reader.Read())
{
var data = new CategoryTreeData();
data.Populate(reader, ordinals);
ret.Add(data);
}
reader.Close();
}
return(ret);
}
}
