System.IO.MemoryStream ms = new System.IO.MemoryStream();
        ms.Write(System.Text.Encoding.Unicode.GetBytes(File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + "XMLFile.xml")), 0, File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + "XMLFile.xml").Length);
        Response.ClearContent();
        Response.Charset = "Unicode";
        Response.ContentType = "application/vnd.ms-excel";
        Response.BinaryWrite(ms.ToArray()); ;
        Response.End();谁能告诉我为撒转换老是乱码!