protected async virtual Task <SiteMapNode> LoadAsync()
{
var root = SiteMapNode.Empty;
SiteMapNode node = root;
var fInfo = _fileProvider.GetFileInfo(_fileName);
if (fInfo.Exists)
{
XmlReaderSettings settings = new XmlReaderSettings()
{
Async = true
};
using (var stream = new StreamReader(fInfo.CreateReadStream(), Encoding.UTF8))
using (XmlReader xmlReader = XmlReader.Create(stream, settings))
{
while (await xmlReader.ReadAsync().ConfigureAwait(false))
{
if (xmlReader.NodeType == XmlNodeType.Element)
{
if ("mvcSiteMapNode".Eq(xmlReader.Name))
{
if (xmlReader.IsStartElement())
{
if (!node.IsEmpty)
{
node = node.CreateChildren();
}
}
node.Title = xmlReader.GetAttribute("title");
string action = xmlReader.GetAttribute("action");
string controller = xmlReader.GetAttribute("controller");
string area = xmlReader.GetAttribute("area");
node.Uri = _urlHelper.Action(action: action, controller: controller, values: new { area = area });
node.AuthorizationPolicy = xmlReader.GetAttribute("policy");
node.LocalizationKey = xmlReader.GetAttribute("loc");
if (xmlReader.IsEmptyElement)
{
node = node.Parent;
}
}
}
else if (xmlReader.NodeType == XmlNodeType.EndElement)
{
if ("mvcSiteMapNode".Eq(xmlReader.Name) && node.Parent != null)
{
node = node.Parent;
}
}
}
}
}
return(root);
}