输出文件流问题

Question

输出StringBuilder的文件流，总是一闪而过，却不提示保存，在Maxthon2中和其它机器的浏览器中却正常，实在搞不懂了        Response.Clear()
        Response.Buffer = True
        Response.Charset = "GB2312"
        Response.AppendHeader("Content-Disposition", "attachment;filename=mcdatamdx.xls")
        Response.Output.Write(OutStr.ToString)
        Response.Flush()
        Response.End()

Answer 1

Dim OutStr As New System.Text.StringBuilder