Is there a limit of elements that could be stored in a List ? or you can just keeping adding elements untill you are out of memory ?
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Is there a limit of elements that could be stored in a List ? or you can just keeping adding elements untill you are out of memory ?
The current implementation of
List<T>usesInt32everywhere – to construct its backing array, for itsCountproperty, as an indexer and for all its internal operations – so there’s a current theoretical maximum ofInt32.MaxValueitems (2^31-1or2147483647).But the .NET framework also has a maximum object size limit of 2GB, so you’ll only get anywhere near the items limit with lists of single-byte items such as
List<byte>orList<bool>.In practice you’ll probably run out of contiguous memory before you hit either of those limits.