private static SessionStateBehavior?GetSessionStateBehavior(WebPageExecutingBase page, ConcurrentDictionary <Type, SessionStateBehavior?> cache)
{
return(cache.GetOrAdd(page.GetType(), type =>
{
SessionStateBehavior sessionStateBehavior = SessionStateBehavior.Default;
var attributes = (RazorDirectiveAttribute[])type.GetCustomAttributes(typeof(RazorDirectiveAttribute), inherit: false);
var directiveAttributes = attributes.Where(attr => StringComparer.OrdinalIgnoreCase.Equals("sessionstate", attr.Name))
.ToList();
if (!directiveAttributes.Any())
{
return null;
}
if (directiveAttributes.Count > 1)
{
throw new InvalidOperationException(WebPageResources.SessionState_TooManyValues);
}
var directiveAttribute = directiveAttributes[0];
if (!Enum.TryParse <SessionStateBehavior>(directiveAttribute.Value, ignoreCase: true, result: out sessionStateBehavior))
{
var values = Enum.GetValues(typeof(SessionStateBehavior)).Cast <SessionStateBehavior>().Select(s => s.ToString());
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, WebPageResources.SessionState_InvalidValue,
directiveAttribute.Value, page.VirtualPath, String.Join(", ", values)));
}
return sessionStateBehavior;
}));
}
private static SessionStateBehavior? GetSessionStateBehavior(WebPageExecutingBase page, ConcurrentDictionary<Type, SessionStateBehavior?> cache)
{
return cache.GetOrAdd(page.GetType(), type =>
{
SessionStateBehavior sessionStateBehavior = SessionStateBehavior.Default;
var attributes = (RazorDirectiveAttribute[])type.GetCustomAttributes(typeof(RazorDirectiveAttribute), inherit: false);
var directiveAttributes = attributes.Where(attr => StringComparer.OrdinalIgnoreCase.Equals("sessionstate", attr.Name))
.ToList();
if (!directiveAttributes.Any())
{
return null;
}
if (directiveAttributes.Count > 1)
{
throw new InvalidOperationException(WebPageResources.SessionState_TooManyValues);
}
var directiveAttribute = directiveAttributes[0];
if (!Enum.TryParse<SessionStateBehavior>(directiveAttribute.Value, ignoreCase: true, result: out sessionStateBehavior))
{
var values = Enum.GetValues(typeof(SessionStateBehavior)).Cast<SessionStateBehavior>().Select(s => s.ToString());
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, WebPageResources.SessionState_InvalidValue,
directiveAttribute.Value, page.VirtualPath, String.Join(", ", values)));
}
return sessionStateBehavior;
});
}
