InvalidOperationException: Collection was modified; enumeration operation may not execute.

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今天写C#脚本，运行时报错，错误信息：

InvalidOperationException: Collection was modified; enumeration operation may not execute.

然后定位到出错行，发现是foreach循环出错，记得之前遇到过，foreach...in...里不能有remove的，奈何写的时候又忘记了。

错误代码：

foreach(GoodInfoVO info in mResGoodBagVO.M_goods){foreach (SwallowFuWenVO vo in mSwallowFuWenList){if (vo.fuwenId == info.id){info.chip -= vo.num;if (info.chip <= 0) mResGoodBagVO.M_goods.Remove(info);break;}}}

将foreach改成for循环替代就可以了：

for (int i = mResGoodBagVO.M_goods.Count - 1; i >= 0; --i ){GoodInfoVO info = mResGoodBagVO.M_goods[i];foreach (SwallowFuWenVO vo in mSwallowFuWenList){if (vo.fuwenId == info.id){info.chip -= vo.num;if (info.chip <= 0) mResGoodBagVO.M_goods.Remove(info);break;}}}

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