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C#

ReadAttachment.aspx.cs：源码内容

							﻿using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
namespace OThinker.H3.Portal
{
    public partial class ReadAttachment : OThinker.H3.Portal.PortalPage
    {
        private string AttachmentID
        {
            get
            {
                string id = this.Request.QueryString[Param_AttachmentID];
                if (id == null || id == "")
                {
                    return Data.Attachment.NullObjectID;
                }
                else
                {
                    return id;
                }
            }
        }
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                OThinker.H3.Data.Attachment attachment = OThinker.H3.Server.Engine.InstanceDataManager.GetAttachment(this.AttachmentID);
                
                if (attachment == null || attachment.Content == null || attachment.Content.Length == 0)
                {
                    this.Response.Write("附件为空");
                }
                else
                {
                    // 显示该文件
                    this.Response.ContentType = attachment.ContentType;
                    //设置响应头和下载保存的文件名              
                    this.Response.AddHeader("Content-Disposition", "online;filename=" + HttpUtility.UrlEncode(attachment.FileName));
                    // 显示内容
                    this.Response.BinaryWrite(attachment.Content);
                    this.Response.End();
                }
            }
        }
    }
}

						