asp.net 文件下載，報文頭設置

1.設置請求類型：

context.Response.ContentType = "application/download";

2.設置報文頭

string EncodeFileName = HttpUtility.UrlEncode(“1.txt”, System.Text.Encoding.UTF8);

context.Response.AddHeader("Content-Disposition", "attachment;filename=" + EncodeFileName + ";");

3.輸出數據流

context.Response.BinaryWrite(System.IO.File.ReadAllBytes(RealFile));//返回文件數據給客戶端下載
            context.Response.Flush();
            context.Response.End();