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var CategoryReviewwing2 = CategoryReviewwing1.GroupBy(o => new { o.Style }).Where(g => g.Count() >= 1).ToList();
var CategoryReviewwing2 = CategoryReviewwing1.GroupBy(o => new { o.Style }).Where(g => g.Count() >= 1).Count();
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原文地址:http://www.cnblogs.com/xiaojian1/p/5462920.html