Question

我试图利用StreamReader并从文本文件中获取数据并将其存储到数组中。我遇到的问题是我认为解决方法很简单，但是我很沮丧。当我打印数组时，它将打印txt文件中的每个单个标记，而不是包含搜索名称以及11个int标记的单行数据。 Long_Name.txtsample

public class SSA
{
    public void Search()
    {
        Console.WriteLine("Name to search for?");
        string n = Console.ReadLine();
        Search(n, "Files/Names_Long.txt");
    }
    public int[] Search(string targetName, string fileName)         
    {
        int[] nums = new int[11];
        char[] delimiters = { ' ', '\n', '\t', '\r' };
        using (TextReader sample2 = new StreamReader("Files/Exercise_Files/SSA_Names_Long.txt"))
        {
            string searchName = sample2.ReadLine();

            if (searchName.Contains(targetName))
            {
                Console.WriteLine("Found {0}!", targetName);
                Console.WriteLine("Year\tRank");
            }
            else
                Console.WriteLine("{0} was not found!", targetName);

            while (searchName != null)
            {
                string[] tokensFromLine = searchName.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
                int arrayIndex = 0;
                int year = 1900;
                foreach (string token in tokensFromLine)
                {
                    int arrval;

                    if (int.TryParse(token, out arrval))
                    {
                        nums[arrayIndex] = arrval;
                        year += 10;
                        Console.WriteLine("{0}\t{1}", year, arrval);
                        arrayIndex++;  
                    }  
                }
                    searchName = sample2.ReadLine();
            }
        }
            return nums;
    }
}

Answer 1

那肯定有很多代码，此代码段不包含重复项，但是如果您愿意使用linq，类似的内容可能会有所帮助？您也可以使用for循环遍历file_text数组，并在其中设置返回数组。无论如何，要处理的代码要少得多

    public int[] Search(string targetName, string fileName)
    {
        List<string> file_text = File.ReadAllLines("Files/Exercise_Files/SSA_Names_Long.txt").ToList();
        List<string> matching_lines = file_text.Where(w => w == targetName).ToList();
        List<int> nums = new List<int>();
        foreach (string test_line in matching_lines)
        {
            nums.Add(file_text.IndexOf(test_line));
        }
        return nums.ToArray();
    }

FileStream类C＃从txt文件到数组的输入

1 个答案: