movies = movies.Where(x => x.Genre problem

# Translation
When I followed the documentation and implemented the method of filtering movies based on the type selected in the drop-down box, I selected "ALL" and nothing was displayed. At this time, I realized a small problem in the code and modified the following code:
if(!String.IsNullOrEmpty(movieGenre) && movieGenre!= "ALL"){ movies = movies.Where(x => x.Genre == movieGenre); }
I hope the teacher can understand this problem. If you can give better suggestions, I would be very grateful.

### Description

当我根据文档教材，实现根据下拉框选择的类型筛选电影后，我选择了“ALL”，结果什么也没有显示，这时候我意识到代码中的一个小问题，然后修改了下面这段代码：
`if(!String.IsNullOrEmpty(movieGenre) && movieGenre!= "ALL"){
movies = movies.Where(x => x.Genre == movieGenre);
}`
希望老师能理解这个问题，如能给出更好的建议，那就太感谢了。
good luck

### Page URL

https://learn.microsoft.com/zh-cn/aspnet/core/tutorials/first-mvc-app/search?view=aspnetcore-8.0

### Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/tutorials/first-mvc-app/search.md

### Document ID

5438de31-8562-3747-d1a5-2a4622252fc1

### Article author

@wadepickett

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