RskFactorRelation.Instance.GetCache<RskFactorRelation>(true).Where(x => !string.IsNullOrEmpty(x.SourceProductTable) && !string.IsNullOrEmpty(x.SourceProductId)) .GroupBy(x=>x.SourceProductTable+","+x.SourceProductId) .Select(x=>x.FirstOrDefault()) .ToDictionary(x => x.IndexPriceFactorId);
Linq去重 不用实现IEqualityComparer接口的方法超级简单
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转载自www.cnblogs.com/kexb/p/9199085.html
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