C# 在迭代字典时删除
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Deleting while iterating over a dictionary
提问by John Baum
Possible Duplicate:
Modifying .NET Dictionary while Enumerating through it
可能的重复：
在枚举时修改 .NET 字典
i have a dictionary object when i iterate over and do some operations. Based on a condition i should either delete or keep the keyvalue pair i am currently iterating over. What is the best way to delete a keyvaluepair from a dictionary while iterating over it? I tried to use a separate dictionary object to keep track of the elements to delete but im not sure how to then use it to delete from my main dictionary or if thats even the most efficient way to do it
当我迭代并执行一些操作时，我有一个字典对象。根据条件，我应该删除或保留我当前正在迭代的键值对。在迭代字典时从字典中删除键值对的最佳方法是什么？我尝试使用单独的字典对象来跟踪要删除的元素，但我不确定如何使用它从我的主字典中删除，或者这是否是最有效的方法
Thanks
谢谢
采纳答案by Rawling
Keep a list of the keys you wish to remove as you find them. Then, when you are done, iterate over this list, calling myDictionary.Remove(key)on each key you stored.
在您找到要删除的密钥时，请保留一份列表。然后，当你完成后，遍历这个列表，调用myDictionary.Remove(key)你存储的每个键。
回答by Euclides Mulémbwè
try using a separate dictionary and instead of marking the key value to delete insert da key values that you want to keep and at the and of the iteration do this: old_map = new_map.
尝试使用单独的字典，而不是标记键值以删除要保留的插入键值，并在迭代中执行此操作：old_map = new_map。
