unity读取文件夹下所有的excel 表格并还写成txt文件

你可以使用C#中的Directory类和ExcelDataReader库来读取文件夹下的所有Excel表格，并将数据写入txt文件中。以下是示例代码：

using System.IO;
using ExcelDataReader;

string folderPath = "your/folder/path";
string outputPath = "your/output/path/output.txt";

// Get all Excel files in the folder
string[] excelFiles = Directory.GetFiles(folderPath, "*.xlsx");

// Loop through each Excel file and read data
foreach (string excelFile in excelFiles)
{
    using (var stream = File.Open(excelFile, FileMode.Open, FileAccess.Read))
    {
        using (var reader = ExcelReaderFactory.CreateReader(stream))
        {
            // Read data from the Excel file
            while (reader.Read())
            {
                // Write data to the output file
                using (StreamWriter writer = new StreamWriter(outputPath, true))
                {
                    for (int i = 0; i < reader.FieldCount; i++)
                    {
                        writer.Write(reader.GetValue(i) + ",");
                    }
                    writer.WriteLine();
                }
            }
        }
    }
}

这段代码将读取指定文件夹下的所有.xlsx文件，并将数据写入指定的txt文件中。你可以根据需要修改文件路径和文件格式。