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![Leo Ngai](https://secure.gravatar.com/avatar/8720b7d5259e54bcd4fd30671d5aaf95?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Leo Ngai
2,184 PointsIt always say compile error
It always say compile error
using System;
namespace Treehouse.CodeChallenges
{
public class VocabularyWord
{
public string Word { get; private set; }
public override bool Equals(object obj)
{
if(Word == obj.Word)
{
return true;
}
else
{
return false;
}
}
public VocabularyWord(string word)
{
Word = word;
}
public override string ToString()
{
return Word;
}
}
}
2 Answers
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 Points
You've skipped a couple of steps.
Before you can access the .Word property of the passed argument, you must cast it to the proper type (VocabularyWord) and check to be sure it is not null. You can confirm the type and check for null at the same time with the "is" operator.
There's an example of these steps shown in the Object.Equals video that precedes this challenge — you might want to re-watch it for more details.
![Leo Ngai](https://secure.gravatar.com/avatar/8720b7d5259e54bcd4fd30671d5aaf95?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Leo Ngai
2,184 PointsThanks. I got it resolved by following your suggestions!