/// <summary>
/// 更具上下文获取相应的上下文缓冲对象
/// </summary>
/// <returns></returns>
private static NameBasedDictionary GetCache()
{
NameBasedDictionary cache;
if (isWeb)
{
cache = (NameBasedDictionary)HttpContext.Current.Items[ContextKey];
}
else
{
cache = threadCache;
}
if (cache == null)
{
cache = new NameBasedDictionary();
}
if (isWeb)
{
HttpContext.Current.Items[ContextKey] = cache;
}
else
{
threadCache = cache;
}
return(cache);
}
/// <summary>
/// 根据上下文成员名称，返回对应内容
///
/// 由于threadCache或HttpContext中的缓冲对象都在构造过程中创建、
/// 因此这里没有cache==bull的判断
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public object this[string name]
{
get
{
if (string.IsNullOrEmpty(name))
{
return(null);
}
NameBasedDictionary cache = GetCache();
if (cache.Count <= 0)
{
return(null);
}
object result;
if (cache.TryGetValue(name, out result))
{
return(result);
}
else
{
return(null);
}
}
set
{
if (string.IsNullOrEmpty(name))
{
return;
}
NameBasedDictionary cache = GetCache();
object temp;
if (cache.TryGetValue(name, out temp))
{
cache[name] = value;
}
else
{
cache.Add(name, value);
}
}
}
