ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
2.1 IUrlHelper.Link没问题 2.2 就会报错，2.2需要改成Url.Link
IUrlHelper ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
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