.net core 上传文件Demo

public IActionResult Upload()
{
    var file = Request.Form.Files[0];
    if (file==null||file.Length==0)
    {
        return Content("文件为空");
    }
    var pathBase = Directory.GetCurrentDirectory();
    var uploadPath = Path.Combine(pathBase, "Upload");
    if (!Directory.Exists(uploadPath))
    {
        Directory.CreateDirectory(uploadPath);
    }
    string name = Guid.NewGuid().ToString() + file.FileName;
    string filePath = Path.Combine(uploadPath,name);
    using (var statem=System.IO.File.Create(filePath))
    {
        file.CopyTo(statem);
    }

    return Content("上传成功");
}