How to use session to visible buttons

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i im trying to show button of hide through sessions. but nothing happening

What I have tried:

if (Session["acct"].Equals("Buyer")) // it shows an error. Object reference not set to an instance of an object.
           {
               Button5.Visible = false;
               foreach (DataListItem item in DataList1.Items)
               {
                   Button btn = item.FindControl("Button6") as Button;

                   btn.Visible = true;


                   LinkButton btn2 = item.FindControl("LinkButton1") as LinkButton;

                   btn2.Visible = false;
               }
           }

if (Session["acct"].ToString()==("Buyer"))  // it also shows an error.  Object reference not set to an instance of an object.
           {
               Button5.Visible = false;
               foreach (DataListItem item in DataList1.Items)
               {
                   Button btn = item.FindControl("Button6") as Button;

                   btn.Visible = true;


                   LinkButton btn2 = item.FindControl("LinkButton1") as LinkButton;

                   btn2.Visible = false;
               }
           }

if (Session["acct"]== "Buyer") // no error but not working
           {
               Button5.Visible = false;
               foreach (DataListItem item in DataList1.Items)
               {
                   Button btn = item.FindControl("Button6") as Button;

                   btn.Visible = true;


                   LinkButton btn2 = item.FindControl("LinkButton1") as LinkButton;

                   btn2.Visible = false;
               }
           }

Posted 25-May-18 18:41pm

Member 12982873

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Comments

Member 12982873 26-May-18 1:36am

any one there ???

Member 12982873 26-May-18 8:09am

Any there plz ???

an0ther1 27-May-18 19:01pm

Review your code, specifically where you have set your session value.
Object reference not set in snippets 1 & 2 are saying that the session does not contain a value named acct

If the Session does not contain this value you will get object reference not set, typically you would test for a Null value & then reset the value prior to using it, typically something like;

if(this.Session["acct"] == null)
{
// populate the value
}
// get the value and use it

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