/// <summary>
/// 将某个分类添加到tree的节点中
/// </summary>
/// <param name="cs">符合条件的分类信息</param>
/// <param name="tree">树信息</param>
private void AddTypeToTree(IEnumerable <Models.Category> cs, Models.FormatModel.TreeModel tree)
{
foreach (Models.Category item in cs)
{
if (tree.Contains(item.CategoryId))
{
continue;
}
Models.FormatModel.TreeModel t = new Models.FormatModel.TreeModel()
{
id = item.CategoryId, text = item.CategoryName
};
AddTypeToTree(cs.Where(type => type.ParentId == item.CategoryId), t);
}
}
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
try
{
//转换为tree模型
Models.FormatModel.TreeModel tree = CommonNews.Helper.OperateContext.Current.LoadAllTypesTreeNode();
//转换为json格式数据输出
string jsonData = Common.ConverterHelper.ObjectToJson(tree);
context.Response.Write(jsonData);
}
catch (Exception ex)
{
new Common.LogHelper(typeof(getTypesNodeHandler)).Error(ex);
context.Response.Write("error");
}
}
/// <summary>
/// 加载所有分类到树
/// </summary>
/// <returns>树模型</returns>
public Models.FormatModel.TreeModel LoadAllTypesTreeNode()
{
List <Models.Category> types = LoadNewsTypes();
Models.FormatModel.TreeModel treeNodes = null;
foreach (Models.Category item in (types.Where(t => t.ParentId == 0)))
{
if (treeNodes.Contains(item.CategoryId))
{
continue;
}
Models.FormatModel.TreeModel tree = new Models.FormatModel.TreeModel()
{
id = item.CategoryId, text = item.CategoryName
};
AddTypeToTree(types.Where(t => t.ParentId == item.CategoryId), tree);
}
return(treeNodes);
}