ASP.net C#一个响应对象上的多个文档

private void writeReport(IReport report,string reportName)
{
    string reportString = report.makeReport();
    ASCIIEncoding encoding = new ASCIIEncoding();
    byte[] encodedReport = encoding.GetBytes(reportString);
    Response.ContentType = "text/plain";
    Response.AddHeader("Content-Disposition","attachment;filename="+ reportName +".txt");
    Response.OutputStream.Write(encodedReport,encodedReport.Length);
    Response.End();
}

但是我需要向客户发送3份文件.我宁愿不必让用户点击3个按钮来获取3个txt文件.有没有办法发送所有3个响应？