asp.net 图片上传源码

<%@ Page Language="C#"%>
<%@ Import Namespace="System.IO" %>
<%
    Response.AddHeader("Content-Disposition", "attachment;filename=test.png");
    BufferedStream inputStream = new BufferedStream(Request.InputStream);
    Stream outputStream = Response.OutputStream;
    byte[] arrayByte = new byte[1024];
    int count;
    while ((count = inputStream.Read(arrayByte, 0, 1024)) > 0)
    {
        outputStream.Write(arrayByte, 0, count);
    }
    outputStream.Flush();
    outputStream.Close();
    inputStream.Close();
%>