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;
public partial class Company : System.Web.UI.Page
{
RGP.IBLL.Member memberBLL = new RGP.BLL.Member();
protected RGP.Model.Member member = new RGP.Model.Member();
RGP.Model.Device device = new RGP.Model.Device();
RGP.IBLL.Device deviceBll = new RGP.BLL.Device();
RGP.IBLL.DictInfo dictBLL = new RGP.BLL.DictInfo();
RGP.IBLL.MemberVisit visitBLL = new RGP.BLL.MemberVisit();
protected RGP.Model.MemberVisit visit = new RGP.Model.MemberVisit(); protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
代码省略............... } visit.VisitID = Convert.ToInt32(memberBLL.get(Request.Cookies["login_MemberID"].Value));
visit.MemberID =int.Parse(Request.QueryString["ID"]);
visit.VisitTime = DateTime.Now;
visit.VisitIP = RGP.Lib.StringHandle.GetIP();
visitBLL.add(visit);
}
}报错
异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。源错误:
行 46: }
行 47:
行 48: visit.VisitID = Convert.ToInt32(memberBLL.get(Request.Cookies["login_MemberID"].Value));
行 49: visit.MemberID =int.Parse(Request.QueryString["ID"]);
行 50: visit.VisitTime = DateTime.Now;
// 应该先判断Cookies是否有内容
if (Request.Cookies.Count > 0)
{
if(Request.Cookies["login_MemberID"]!=null)
{
//在这里取值
}
}或者给visit.VisitID = Convert.ToInt32(memberBLL.get(Request.Cookies["login_MemberID"].Value));
加try
{
}
catch (Exception)
{
throw;
}
//在没有设置值的时候会出错,要先判断一下if(!string.IsNullOrEmpty(Request.Cookies["login_MemberID"]))
{
visit.VisitID = Convert.ToInt32(memberBLL.get(Request.Cookies["login_MemberID"].Value));
visit.MemberID =int.Parse(Request.QueryString["ID"]);
visit.VisitTime = DateTime.Now;
visit.VisitIP = RGP.Lib.StringHandle.GetIP();
visitBLL.add(visit);}
int i = 0;
if(Request.Cookies["login_MemberID"]!=null)
{
int.TryParse(Request.Cookies["login_MemberID"].Value,out i);
}
{
if (Request.Cookies["login_MemberID"] == null)
{
visit.VisitID = 0;
}
else
{
visit.VisitID = Convert.ToInt32(memberBLL.get(Request.Cookies["login_MemberID"].Value));
} }
用一个中间变量啊。先判断着个值是不是空,然后,把这个值赋值给一个中间变量,
如果为空,就赋值为0然后把变量传过去。执行你的函数。
{
//在这里取值
}
这就是你要的