How to check session is created or not?

[BalasubramanianK]

Hi, How to check whether the session is created or not in c#? I am using like If (Session("Name") == null), but it is showing error named, object reference is not set to an object. tnx in adv.

Balasubramanian K.

[eyeseetee]

if (Session["Name"] != null) { stName = Session["Name"].ToString(); } else { stName= ""; } something like the above We are not a Code Charity

[BalasubramanianK]

tnx. It is working fine. If it is working with !=, why it is not working with '=='. Why it throws error?

Balasubramanian K.

[Sherin Iranimose]

It should work! Can you copy and paste your coding.

EVEN THE WORD IMPOSSIBLE SAYS I M POSSIBLE.

[tina newcoder]

BalasubramanianK wrote:

why it is not working with '=='

if you are comparing with a string, like if(nameStr==Session["name"] ) ; then, for that you need to first use ToString(). like this ... if(nameStr==Session["name"].ToString()) ; Is these you were looking for ... ?

[N a v a n e e t h]

BalasubramanianK wrote:

If it is working with !=, why it is not working with '=='. Why it throws error?

Do you know what != and == means ? First one is checking inequality and second is equality checking. So if you write

if(Session["name"] == NULL)
string name = Session["name"].ToString();

will throw error as you are trying to access a method in a NULL referenced object. If you change the code to

if(Session["name"] != NULL)
string name = Session["name"].ToString();

, you are accessing ToString() only when Session["name"] exist. Hope it helps

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia How to use google | Ask smart questions