Web/Client/img.aspx.cs

(完整代码) 1KB

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Drawing;

namespace MrZeng.Web.Client
{
    public partial class img : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            MrZeng.BLL.Common bll = new MrZeng.BLL.Common();
            string checkCode = bll.GetRandomCode(4);
            Session["CheckCode"] = checkCode;
            SetPageNoCache();
            bll.CreateImage(checkCode);
        }

        /// <summary>
        /// 设置页面不被缓存
        /// </summary>
        private void SetPageNoCache()
        {
            Response.Buffer = true;
            Response.ExpiresAbsolute = System.DateTime.Now.AddSeconds(-1);
            Response.Expires = 0;
            Response.CacheControl = "no-cache";
            Response.AppendHeader("Pragma", "No-Cache");
        }


    }
}

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