vb.net - how to create session in asp.net using vb -



vb.net - how to create session in asp.net using vb -

i have gridview shows details of passenger have booked ticket on page load event have next code.

label1.text = session("pid").tostring() dim sql string = "select * plist pid='" & label1.text & "'" seek con.connectionstring = strcon dim cm new sqlclient.sqlcommand(sql, con) con.open() cm.executenonquery() grab ex exception msgbox(ex.message) if con.state = connectionstate.open con.close() end if end seek

i getting error: system.nullreferenceexception: object reference not set instance of object.

the session session("pid") null, should fill info before , should check session:

if session("pid") isnot nil ' write code end if

asp.net vb.net

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