相关疑难解决方法(0)

对于下面的代码

public struct Person
{
    public int ID;
    public static bool operator ==(Person a, Person b) { return  a.Equals(b); }
    public static bool operator !=(Person a, Person b) { return !a.Equals(b); }
}

为什么编译器会给我这些警告？
没有定义下面的方法有什么问题？

warning CS0660: 'Person' defines operator == or operator != but
    does not override Object.Equals(object o)

warning CS0661: 'Person' defines operator == or operator != but
    does not override Object.GetHashCode()

我使用kendo网格来显示一组记录.但是现在我想使用Aggregates属性对列进行分组并对列执行某些聚合函数.

根据以下文档,我可以在单个列上应用分组,但我想对多列进行分组 http://demos.telerik.com/kendo-ui/grid/aggregates

请建议我如何实现它.

谢谢

我一直试图使我的相等定义工作,但发现IEqualityComparer似乎无法正常工作.

我的课:

public class DBTileSimple
{
    public int X;
    public int Y;
    public int Zoom;

    public DBTileSimple(int x, int y, int z)
    {
        X = x;
        Y = y;
        Zoom = z;
    }
}

测试IEqualityComparer,因此对于任何对象都应该是相同的:

public class TileComparer : IEqualityComparer<DBTileSimple>
{
    public bool Equals(DBTileSimple x, DBTileSimple y)
    {
        return true;
    }

    public int GetHashCode(DBTileSimple obj)
    {
        return 1;
    }
}

结果:

DBTileSimple t1 = new DBTileSimple(10, 20, 17);
DBTileSimple t2 = new DBTileSimple(10, 20, 17);
Log.Info("t1 and t2 = " …