将多维数组中的字符串追加到.csv文件C＃

Question

我有一个多维数组，我想将其写入.csv，当它在Excel中显示时，我希望它采用相同的矩阵式顺序。

        string[,] output = new string[,] { {"n=", "128", "256", "512", "1024", "2048", "4096", "8192", "16384", "32768", "65536", "131072", "262144", "524288", "1048576", "2097152", "4194304", "8388608"},
                                           { "Selection", timeSelection128, timeSelection256, timeSelection512, timeSelection1024, timeSelection2048, timeSelection4096, timeSelection8192, timeSelection16384, timeSelection32768, timeSelection65536, timeSelection131072, timeSelection262144, timeSelection524288, timeSelection1048576, timeSelection2097152, timeSelection4194304, timeSelection8388608 },
                                           { "Insertion", timeInsertion128, timeInsertion256, timeInsertion512, timeInsertion1024, timeInsertion2048, timeInsertion4096, timeInsertion8192, timeInsertion16384, timeInsertion32768, timeInsertion65536, timeInsertion131072, timeInsertion262144, timeInsertion524288, timeInsertion1048576, timeInsertion2097152, timeInsertion4194304, timeInsertion8388608 },
                                           { "Merge", timeMerge128, timeMerge256, timeMerge512, timeMerge1024, timeMerge2048, timeMerge4096, timeMerge8192, timeMerge16384, timeMerge32768, timeMerge65536, timeMerge131072, timeMerge262144, timeMerge524288, timeMerge1048576, timeMerge2097152, timeMerge4194304, timeMerge8388608 },
                                           { "Quick", timeQuick128, timeQuick256, timeQuick512, timeQuick1024, timeQuick2048, timeQuick4096, timeQuick8192, timeQuick16384, timeQuick32768, timeQuick65536, timeQuick131072, timeQuick262144, timeQuick524288, timeQuick1048576, timeQuick2097152, timeQuick4194304, timeQuick8388608 } };`

那是我的多维数组，现在我正在做类似的事情... [5x18]

StringBuilder sb = new StringBuilder();
        for (int x = 0; x < 5; x++)
        {
            for (int y = 0; y < 18; y++)
            {
                sb.AppendLine(string.Join(delimiter, output[x,y]));
            }
            File.AppendAllText(filePath, sb.ToString());
        }

但这只是给我一个excel文件，第一列中的所有内容都一个接一个。 我需要数组中的每一行都是Excel等中的一行。

Answer 1

好了，检查输出文件VS用excel生成的文件并查看差异。 如果没有视觉差异，则可以尝试使用sb.Append(string.Concat("bla", "\\r\\n")).

Answer 2

String.Join本身已经加入了一个字符串列表 。 无需循环。 应该这样做：

StringBuilder sb = new StringBuilder();
for (int x = 0; x < 5; x++)
    sb.AppendLine(String.Join(delimiter, output[x]));

File.AppendAllText(filePath, sb.ToString());

---

您可能是对的-您无法按照我的想法在多维数组上使用以上代码。

然后，您必须手动进行操作：

StringBuilder sb = new StringBuilder()
for (int x = 0; x < 5; x++)
{
    StringBuilder lineBuilder = new StringBuilder();
    for (int y = 0; y < 18; y++)
    {
        if (lineBuilder.Count > 0)
            lineBuilder.Append(delimiter);
        lineBuilder.Append(output[x,y]);
    }

    sb.AppendLine(lineBuilder);
}

File.AppendAllText(filePath, sb.ToString());