DataTable消耗的内存比List< T> [英] Does a DataTable consume more memory than a List<T>?

问题描述

解决方案

是的，绝对是一个DataTable消耗的内存比List更多。

DataTable类有很多对象用于列定义，表信息（名称等），行对象的集合，项目数组（基本上都是列表）等等。

编辑：此外，列表更加有效地添加项目，迭代等（反映通用列表的添加代码，数据表可查看更多详细信息）。

Is there a trade off in respect to performance, trade off in respect to memory consumption?

解决方案

Yes, absolutely a DataTable consumes more memory than a List.

The DataTable class has lots of objects for column definitions, the table info (name, etc), collections of row objects, the "item arrays" for each row (which is basically all the List would have), etc.

EDIT: Also, List is more performant for adding items, itterating through, etc. (reflect the code for "Add" for generic lists, and for data tables to see more detail).

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