给定以下类别
public class Foo
{
public int FooId { get; set; }
public string FooName { get; set; }
public override bool Equals(object obj)
{
Foo fooItem = obj as Foo;
if (fooItem == null)
{
return false;
}
return fooItem.FooId == this.FooId;
}
public override int GetHashCode()
{
// Which is preferred?
return base.GetHashCode();
//return this.FooId.GetHashCode();
}
}
我重写了Equals方法，因为Foo表示Foos表的一行。哪个是重写GetHashCode的首选方法？
为什么重写GetHashCode很重要？
