vb.net - System.Web.HttpCookie Cannot be converted to Integer -


i can logged in users id when try pass cookie query getting above error. how can convert value? in table value (d606e50f-0a5c-42d6-a8eb-4219465e8a5e)

        dim myobject membershipuser = membership.getuser()         dim userid string = myobject.provideruserkey.tostring()          dim cookieuser httpcookie = new httpcookie("userid")         cookieuser.value = userid.tostring()         response.cookies.add(cookieuser)          dim ds dataset          ds = u.runquery("select [firstname], [lastname], [email], [phone] aspnet_users @userid = "(cookieuser))      firstnametextbox.text = ds.tables(0).rows(0)("firstname")     lastnametextbox.text = ds.tables(0).rows(0)("lastname")     emailtextbox.text = ds.tables(0).rows(0)("email")     phonetextbox.text = ds.tables(0).rows(0)("phone")

thanks!

the problem following 

userid = "(cookieuser)

vb.net seeing string constant followed (value) treats index string. hence tries interpret cookieuser integer , fails. looks trying concatenate strings here , if following 

userid = " & cookieuser

note seemingly opens sql injection attack though. better use query builder , sanitize inputs using raw string concatenation build sql queries


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