Operation is not valid due to the current state of the object.
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今天遇到一个asp.net的草郁闷的问题，看下截图
狂晕啊，在google上狂搜了一下，好在已经有大侠也遇到过这个问题了，先看下别人的解决办法吧
Operation is not valid due to the current state of the object.这种类型的错误有很多，很多都是针对linq的，但是如果是下面的错误类型System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded() +2692302
不过我的是+2419294，这个好像不是确定的吧。。。
那就是因为
因为上年12月29号那次微软发布的最后一次非正常更新程序引起的．在这次安全更新中对于asp.net单次的提交量做了一个最大量限制1000，出现这个异常正是因为页面提交量超过了1000这个限制．这个可以在web.config中更改：
<appSettings> <add key="aspnet:MaxHttpCollectionKeys" value="5000" /> </appSettings>
OK，问题搞定
- Operation is not valid due to the current state of the object.
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