如何使用来自另一个类（C#）的变量来实现搜索功能？答案

【问题标题】：How to implement a search feature using variables from another class (C#)?如何使用来自另一个类（C#）的变量来实现搜索功能？
【发布时间】：2021-01-17 15:30:14
【问题描述】：

我正在做一个小项目，用户将有关电影的信息输入到数组中，然后可以搜索标题以找出先前输入的信息。但是，我当前的搜索功能在代码末尾返回：

System.String[]'s age rating is System.Int32[]
System.String[]'s genre is System.String[]
System.String[]'s rating is System.Int32[]

如何让代码加载所需的信息而不是当前返回的信息？请参阅下面的代码。

static void Movie(string[] MovieTitle, string[] Genre, int[] AgeRating, int[] Rating)
                {
                for (int i = 0; i < Rating.Length; i++)
                {
                    Console.WriteLine("What is the title of the movie?");
                    MovieTitle[i] = (Console.ReadLine());
                    Console.WriteLine("What is the age rating of the movie?");
                    AgeRating[i] = Convert.ToInt32(Console.ReadLine());
                    Console.WriteLine("What is the genre of the movie?");
                    Genre[i] = (Console.ReadLine());
                    Console.WriteLine("What is the user rating of the movie?");
                    Rating[i] = Convert.ToInt32(Console.ReadLine());
                    
    
                }
            }
            
            static void Main()
            {
                string[] MovieTitle = new string [5];
                int[] AgeRating = new int [5];
                string[] Genre = new string [5];
                int[] Rating = new int [5];
                int position;
                string search;
    
                Movie(MovieTitle, Genre, AgeRating, Rating);
    
                Console.WriteLine("What movie do you want to see?");
                search = Console.ReadLine();
                position = Array.IndexOf(MovieTitle, search);
                Console.WriteLine(MovieTitle + "'s age rating is " + AgeRating);
                Console.WriteLine(MovieTitle + "'s genre is " + Genre);
                Console.WriteLine(MovieTitle + "'s rating is " + Rating);
            }
        }
    }

【问题讨论】：

标签： c# arrays search

【解决方案1】：

您不是在访问单个项目，而是在打印信息时使用数组本身。您需要使用position 来查找数组中的特定元素：

Console.WriteLine(MovieTitle[position] + "'s age rating is " + AgeRating[position]);
Console.WriteLine(MovieTitle[position] + "'s genre is " + Genre[position]);
Console.WriteLine(MovieTitle[position] + "'s rating is " + Rating[position]);

您可能还需要添加绑定检查，因为如果在数组中未找到该元素，IndexOf 将返回 -1。

【讨论】：