我有一个自定义配置部分,其中包含我使用从这个问题中获得的以下代码创建的集合:
public class GenericConfigurationElementCollection<T> : ConfigurationElementCollection, IEnumerable<T> where T : ConfigurationElement, new()
{
List<T> _elements = new List<T>();
protected override ConfigurationElement CreateNewElement()
{
T newElement = new T();
_elements.Add(newElement);
return newElement;
}
protected override object GetElementKey(ConfigurationElement element)
{
return _elements.Find(e => e.Equals(element));
}
public new IEnumerator<T> GetEnumerator()
{
return _elements.GetEnumerator();
}
}
我使用以下属性实现了我的集合:
[ConfigurationProperty("states")]
[ConfigurationCollection(typeof(StateElement))]
public GenericConfigurationElementCollection<StateElement> States
{
get
{
return (GenericConfigurationElementCollection<StateElement>)this["states"];
}
}
问题是,当我尝试使用 Parallel.ForEach 遍历集合时,如下所示
Parallel.ForEach<StateElement>(config.States.GetEnumerator(), state=> theState.StateStatus(state));
我收到以下错误:
The best overloaded method match for 'System.Threading.Tasks.Parallel.ForEach<States.Configuration.StateElement>(System.Collections.Generic.IEnumerable<States.Configuration.StateElement>, System.Action<States.Configuration.StateElement>)' has some invalid arguments
Argument 1: cannot convert from 'System.Collections.Generic.IEnumerator<States.Configuration.StateElement>' to 'System.Collections.Generic.IEnumerable<States.Configuration.StateElement>'
最后一个让我难住了。无法从 IEnumerator 转换为 IEnumerable?