I'm trying to determine if a Session
variable exists, but I'm getting the error:
System.NullReferenceException: Object reference not set to an instance of an object.
Code:
// Check if the "company_path" exists in the Session context
if (System.Web.HttpContext.Current.Session["company_path"].ToString() != null)
{
// Session exists, set it
company_path = System.Web.HttpContext.Current.Session["company_path"].ToString();
}
else
{
// Session doesn't exist, set it to the default
company_path = "/reflex/SMD";
}
That is because the Session
name "company_path" doesn't exist, but I can't detect it!
Do not use ToString() if you want to check if Session["company_path"] is null. As if Session["company_path"] is null then Session["company_path"].ToString() will give you exception.
Change
if (System.Web.HttpContext.Current.Session["company_path"].ToString() != null)
{
company_path = System.Web.HttpContext.Current.Session["company_path"].ToString();
}
else
{
company_path = "/reflex/SMD";
}
To
if (System.Web.HttpContext.Current.Session["company_path"]!= null)
{
company_path = System.Web.HttpContext.Current.Session["company_path"].ToString();
}
else
{
company_path = "/reflex/SMD";
}