Memorystream to CSV（在Excel中打开）列标题宽度，用于修改指数数字格式显示

Question

我想要执行以下操作的主要原因是在Excel中显示不是指数格式的大数字。如果有一种比修改列宽标题更好的方法而不修改当前结构/方法，只是添加或稍微修改以下代码，那么请告诉我。感谢。

以下是我用于使用memorystream将视图中的数据写入excel电子表格的代码。目前，当数据从内存流写入excel文件时，excel列宽度都是标准的默认宽度。有没有办法通过保留当前的代码结构/方法并只添加代码或稍微修改代码来修改Excel电子表格中的这些列标题宽度？

public ActionResult ExportStudentRes()
    {
        //PropertyInfo[] Props = typeof(vw_CheckList).GetProperties(BindingFlags.Public | BindingFlags.Instance);
        Placeholder db = new PlaceholderEntities();

        List<vw_StudentResponse> studentres = db.vw_StudentResponse.ToList();

        PropertyInfo[] Props = typeof(vw_StudentResponse).GetProperties(BindingFlags.Public | BindingFlags.Instance);
        MemoryStream stream = new MemoryStream();
        using (var writer = new StreamWriter(stream))
        {
            StringBuilder colHeading = new StringBuilder();
            foreach (PropertyInfo prop in Props)
            {
                colHeading.Append(prop.Name);
                colHeading.Append(",");
            }
            string cHeading = colHeading.ToString();
            cHeading = cHeading.TrimEnd(',');

            writer.Write(cHeading);
            writer.Write("\n");

            foreach (vw_StudentResponse item in studentres)
            {
                StringBuilder rowValues = new StringBuilder();
                for (int i = 0; i < Props.Length; i++)
                {

                    rowValues.Append(Props[i].GetValue(item));
                    rowValues.Append(",");
                }
                string rvalues = rowValues.ToString();
                rvalues = rvalues.TrimEnd(',');
                writer.Write(rvalues);
                writer.Write("\n");
            }
        }


        string downloadFileName = "export_StudentResponse.csv";

        string contentType = "text/csv";

        Response.Clear();
        Response.ContentType = contentType;
        Response.AddHeader("content-disposition", "attachment;filename=" + downloadFileName);
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.BinaryWrite(stream.ToArray());
        Response.End();

        return View();

    }