从MemoryStream返回时,ASP.net MVC ActionResult会破坏excel文件

Response.ContentType = "application/vnd.ms-excel";

using OfficeOpenXml;

public ActionResult DownloadExcel()
{
    // 创建Excel文件
    using (var package = new ExcelPackage())
    {
        var worksheet = package.Workbook.Worksheets.Add("Sheet1");
        worksheet.Cells["A1"].Value = "Hello";
        worksheet.Cells["B1"].Value = "World";

        // 将Excel文件内容写入到MemoryStream中
        var stream = new MemoryStream(package.GetAsByteArray());

        // 设置响应的内容类型为Excel文件
        Response.ContentType = "application/vnd.ms-excel";

        // 返回MemoryStream作为文件下载
        return File(stream, "application/vnd.ms-excel", "example.xlsx");
    }
}