c# - 将二维 C# 数组的内容存储到 csv 文件中

Question

我有一个 C# 数组，我想从中获取每个元素并将其存储在每个 csv 单元格中。我编写了以下内容:

StreamWriter file = new StreamWriter("C:/mylocation/data.csv");
//my2darray  is my 2d array created.
for (int i = 0; i < my2darray.GetLength(1); i++)
   {
            for (int j=0; j<my2darray.GetLength(0);j++)
            {
                file.Write(my2darray[i][j]);
                file.Write("\t");
            }
            file.Write("\n"); // go to next line
     }

问题是每个 csv 单元格包含多个数组元素。如何解决？

Answer 1

我宁愿将 CSV 表示和保存分开:

private static IEnumerable<String> ToCsv<T>(T[,] data, string separator = ",") {
  for (int i = 0; i < data.GetLength(0); ++i)
    yield return string.Join(separator, Enumerable
      .Range(0, data.GetLength(1))
      .Select(j => data[i, j])); // simplest, we don't expect ',' and '"' in the items
}

...

File.WriteAllLines(@"C:/mylocation/data.csv",
  ToCsv(my2array));