将数据从CSV读取到数组(C#) [英] Reading data from a CSV to an array of arrays (C#)

问题描述

我已经打开了CSV文件，但是我不知道如何将结果数组从将行拆分为另一个数组中放入.目前，我有以下代码，希望它能对我的意思有更多的了解:

I have the CSV file opened, but I can't figure out how to put the resultant array from splitting the line into another array. I have the following code currently, hopefully it gives more of an idea of what I'm meaning:

    private void ReadFileToArray(StreamReader file)
    {
        int i = 0;
        string[][] FP_GamesArray;
        while (!file.EndOfStream)
        {
            string line = file.ReadLine();
            if (!String.IsNullOrWhiteSpace(line))
            {
                string[] values = line.Split(',');
                MessageBox.Show(values.ToString());
                FP_GamesArray[i] = values;
            }
            i++;
        }
    }

有什么想法吗?我遇到两个错误:一个是说Cannot implicitly convert type 'string[]' to 'string'，另一个是说Use of unassigned local variable 'FP_GamesArray'.

Any ideas? I get two errors: One saying Cannot implicitly convert type 'string[]' to 'string' and second saying Use of unassigned local variable 'FP_GamesArray'.

推荐答案

您需要初始化数组，然后才能知道其中有多少行.

You need to initialize your array, to do that you need to know how many lines in there.

您可以执行以下操作，而不是逐行阅读:

Instead of reading line by line you can do:

string[][] FP_GamesArray = File.ReadLines("path")
                          .Select(line => line.Split(','))
                          .ToArray();

或者，也可以从List<string[]>开始，使用它的add方法，然后在读取完成后将其转换为数组，如下所示:

Or altenatively, you can start with a List<string[]>, use it's add method, then convert it to an array after the reading is finished, like below:

List<string[]> lines = new List<string[]>();
while (!file.EndOfStream)
{
     string line = file.ReadLine();
     if (!String.IsNullOrWhiteSpace(line))
     {
         lines.Add(line.Split(',');   
     }
}

string[][] FP_GamesArray = lines.ToArray();

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