C# HashSet类（复杂）对象的去重

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public class Student {     public string Id { get; set; }     public string Name { get; set; }       public override bool Equals(object obj)     {         Student e = obj as Student;         return this.Id == e.Id && this.Name == e.Name;     }       public override int GetHashCode()     {         return this.Id.GetHashCode() * 100 + this.Name.GetHashCode();     } }

　　

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public static void Test() {     var hashSetData = new HashSet<Student>();     hashSetData.Add(new Student { Id = "001", Name = "张三" });     hashSetData.Add(new Student { Id = "002", Name = "李四" });     hashSetData.Add(new Student { Id = "001", Name = "张三" });     hashSetData.Add(new Student { Id = "003", Name = "张三" });       foreach (var item in hashSetData)     {         Console.WriteLine("Id:{0},Name:{1}", item.Id, item.Name);     } }