ASP.NET: Access Session variable in global.asax
Solution 1
It should work if you do it like this:
strError = System.Web.HttpContext.Current.Session["trCustomerEmail"]
Because that is what I do myself.
What exactly do you mean with: Visual Studio is telling that "Session is not available in this context"? Do you get a compiler error or a run-time exception?
You could try to be more defensive and test if there actually is a current HttpContext and a Session:
if (HttpContext.Current != null &&
HttpContext.Current.Session != null) {
strError = HttpContext.Current.Session["trCustomerEmail"]
}
Solution 2
I think applicaiton error is specific for the whole application and a session is specific for the user. Maybe you can throw your own Exception where you save the information from the session inside your exception.
Solution 3
You may try this:
HttpContext context = ((HttpApplication)sender).Context;
then you must use is like this:
context.Request.QueryString.ToString()
context.Session["key"] = "fasfaasf";
but if the exception was thrown before the Session object is loaded, it will be null
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Dushan Perera
❤️ building super 🚅 fast 🏎️ web experience 🚀 Azure functions <⚡> is my recent area of interest. Former ASP.NET MVP Please feel free to suggest improvements to my posts
Updated on December 18, 2020Comments
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Dushan Perera over 3 years
I have an ASP.NET application and in the Global.asax ' Application Error Event, I am calling a method to trace/log the error. I want to use the session variable content here. I used the below code
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("[email protected]", "[email protected]", "Error in " + Request.Form.ToString(), strError, 2); }
I am getting an error in the line of code where I am accessing the session variable. Visual Studio is telling that
Session is not available in this context
How can I get rid of this?
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Remko Jansen almost 15 yearsCan you post the exception message you get when accessing the Session and the exception message that you are trying to handle?
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Icebob almost 15 yearsYes. Applicationxxxx events is specific for your application, not for a session.