我有一个ASP.NET应用程序,在Global.asax’应用程序错误事件中,我正在调用一个跟踪/记录错误的方法.我想在这里使用会话变量内容.我使用下面的代码
void Application_Error(object sender,EventArgs e) { //get reference to the source of the exception chain Exception ex = Server.GetLastError().GetBaseException(); //log the details of the exception and page state to the //Windows 2000 Event Log GUI.MailClass objMail = new GUI.MailClass(); string strError = "MESSAGE: " + ex.Message + "<br><br><br>" + "SOURCE: " + ex.Source + "<br>FORM: " + Request.Form.ToString() + "<br>QUERYSTRING: " + Request.QueryString.ToString() + "<br>TARGETSITE: " + ex.TargetSite + "<br>STACKTRACE: " + ex.StackTrace; if (System.Web.HttpContext.Current.Session["trCustomerEmail"] != null) { strError = "Customer Email : " + Session["trCustomerEmail"].ToString() +"<br />"+ strError; } //Call a method to send the error details as an Email objMail.sendMail("test@gmail.com","myid@gmail.com","Error in " + Request.Form.ToString(),strError,2); }
我在访问会话变量的代码行中出现错误.Visual Studio告诉我
“Session is not available in this context”
如何摆脱这个?有什么想法吗?
提前致谢
解决方法
如果你这样做它应该工作:
strError = System.Web.HttpContext.Current.Session["trCustomerEmail"]
因为这就是我自己做的事情.
你的意思是什么:Visual Studio告诉“会话在这种情况下不可用”?您是否收到编译器错误或运行时异常?
如果确实存在当前的HttpContext和Session,您可以尝试更具防御性并进行测试:
if (HttpContext.Current != null && HttpContext.Current.Session != null) { strError = HttpContext.Current.Session["trCustomerEmail"] }