list集合去重的一种方法

定义一个类，让这个类实现这个IEqualityComparer<T>接口

代码如下：

public class CompareHelper : IEqualityComparer<Person>

{

public bool Equals(Person x, Person y)

{

//return x.Name == y.Name;

return x.Name == y.Name;

}

public int GetHashCode(Person obj)

{

//return obj.GetHashCode();

return obj.Name.GetHashCode();

// return obj.Title.GetHashCode();

}

}

var list2 = list.Distinct(new CompareHelper()).ToList();