添加类并继承`IEqualityComparer`,重写方法
public class DistinctComparer : IEqualityComparer<ActionInfo> { public bool Equals(ActionInfo x, ActionInfo y) { return x.ID == y.ID; } public int GetHashCode(ActionInfo obj) { return obj.ID.GetHashCode(); } }
调用
user_actions.Distinct<ActionInfo>(new DistinctComparer());