/// <summary>
/// 立即兑换按钮点击事件
/// 作者：姚东
/// 时间：20101015
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnExchange_Click(object sender, EventArgs e)
{
////判断会员是否登录系统了
//if (Session["UserGUID"] == null)
//{
// PageHelper.ShowExceptionMessage("登录系统后才能进行礼品兑换！");
// return;
//}
BLL.Entity.GiftsEntity giftEntity = new BLL.Entity.GiftsEntity(GiftGuid);
BLL.Entity.PointEntity pointEntity = new BLL.Entity.PointEntity(Session["UserGUID"].ToString());
//判断剩余积分是否够兑换礼品
if (giftEntity.NeedPoint > pointEntity.RemainPoint)
{
PageHelper.ShowExceptionMessage(string.Format("您的余额为{0}个积分，兑换此礼品需要{1}个积分！",
pointEntity.RemainPoint.ToString(), giftEntity.NeedPoint.ToString()));
return;
}
//判断礼品余量是否够兑换
if (giftEntity.RemainAmount <= 0)
{
PageHelper.ShowExceptionMessage("暂时没有多余的礼品可被兑换，请稍后再试！");
return;
}
//更新兑换记录
BLL.Entity.ExchangeEntity exchangeEntity = new BLL.Entity.ExchangeEntity();
exchangeEntity.ApplyTime = DateTime.Now;
exchangeEntity.GiftGuid = GiftGuid;
exchangeEntity.HuiYuanGuid = Session["UserGUID"].ToString();
exchangeEntity.Memo = "";
exchangeEntity.Status = 1;
exchangeEntity.UsedPoint = giftEntity.NeedPoint;
ExchangeRule exchangeRule = new ExchangeRule();
exchangeRule.Add(exchangeEntity);
//更新积分信息
pointEntity.RemainPoint = pointEntity.RemainPoint - giftEntity.NeedPoint;
PointRule pointRule = new PointRule();
pointRule.Update(pointEntity);
//更新礼品余量
giftEntity.RemainAmount -= 1;
new GiftsRule().Update(giftEntity);
PageHelper.ShowExceptionMessage("已发送兑换申请。");
}
/// <summary>
/// 将文件从服务器下载到本地
/// </summary>
/// <param name="fileName">文件路径</param>
/// <param name="resId">资源id</param>
/// <param name="appId">附件id</param>
public void DownLoad(string fileName, string resId, string appId)
{
using (JSZX_ResourceEntities db = new JSZX_ResourceEntities())
{
Resource res = new Resource();
string userId = CommonUtil.GetSession(Session, "id");
res.AddDownLoadNum(resId, appId, userId, db);
}
string loccalFile = fileName;// Constant.DISK_ADDRESS + fileName;
try
{
if (!System.IO.File.Exists(loccalFile))
{
throw new Exception("文件不存在");
}
//100K 每次读取文件，只读取100K
//const long ChunkSize = 102400;
//byte[] buffer = new byte[ChunkSize];
//HttpContext.Response.Clear();
//FileStream fs = new FileStream(loccalFile, FileMode.Open);
//long dataLengthToRead = fs.Length;//获取下载的文件总大小
#region 20150228 5920 Add 文件ID改成文件原名
fileName = Path.GetFileName(fileName);
Resource res = new Resource();
fileName = res.GetFileOriginalName(fileName);
#endregion
HttpContext.Response.ContentType = "application/octet-stream";
HttpContext.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName));
Response.TransmitFile(loccalFile);
//while (dataLengthToRead > 0 && HttpContext.Response.IsClientConnected)
//{
// int lengthRead = fs.Read(buffer, 0, Convert.ToInt32(ChunkSize));//读取的大小
// HttpContext.Response.OutputStream.Write(buffer, 0, lengthRead);
// HttpContext.Response.Flush();
// dataLengthToRead = dataLengthToRead - lengthRead;
//}
//HttpContext.Response.Close();
////下载完成
//if (dataLengthToRead == 0)
//{
// if (fs != null)
// {
// fs.Close();
// }
//}
//下载资源时，可以获得积分
PointRule pr = new PointRule();
pr.AddPoint(resId, CommonUtil.GetSession(Session, "id"), "1");
//下载资源时，可以获得积分
}
catch (Exception ex)
{
clsLog.ErrorLog("MineController", "DownLoad", ex.Message);
HttpContext.Response.Write("<script type='text/javascript'>layer.alert(" + ex.Message + ")</script>");
}
}
