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我的问题是关于枚举字典元素

// Dictionary definition
private Dictionary<string, string> _Dictionary = new Dictionary<string, string>();

// add values using add

_Dictionary.Add("orange", "1");
_Dictionary.Add("apple", "4");
_Dictionary.Add("cucumber", "6");

// add values using []

_Dictionary["banana"] = 7;
_Dictionary["pineapple"] = 7;

// Now lets see how elements are returned by IEnumerator
foreach (KeyValuePair<string, string> kvp in _Dictionary)
{
  Trace.Write(String.Format("{0}={1}", kvp.Key, kvp.Value));
}

枚举的元素将以什么顺序排列？我可以强制命令按字母顺序排列吗？

I'm looking for something like a Dictionary<K,V> however with a guarantee that it preserves insertion order. Since Dictionary is a hashtable, I do not think it does.

Is there a generic collection for this, or do I need to use one of the old .NET 1.1 collections?