asp.net-mvc - 如何将 httppostedfilebase 转换为字符串数组

Question

    public ActionResult Import(HttpPostedFileBase currencyConversionsFile)
    {

        string filename = "CurrencyConversion Upload_" + DateTime.Now.ToString("dd-MM-yyyy") + ".csv";
        string folderPath = Server.MapPath("~/Files/");

        string filePath = Server.MapPath("~/Files/" + filename);
        currencyConversionsFile.SaveAs(filePath);
        string[] csvData = System.IO.File.ReadAllLines(filePath);

        //the later code isn't show here
        }

我知道将httppostedfilebase转换为字符串数组的常用方法，它会先将文件存储在服务器中，然后从服务器读取数据。无论如何，是否可以直接从 httppostedfilebase 获取字符串数组，而不将文件存储到服务器中？

Answer 1

您可以从 Stream 中逐行读取文件，如下所示:

List<string> csvData = new List<string>();
using (System.IO.StreamReader reader = new System.IO.StreamReader(currencyConversionsFile.InputStream))
{
    while (!reader.EndOfStream)
    {
        csvData.Add(reader.ReadLine());
    }
}