Conversion failed when converting the varchar value '@ReferralID' to data type int.

i am trying to do assign the referralID in
        if (!this.IsPostBack)
        {

            this.SqlDataSource3.SelectParameters["ReferralID"].DefaultValue = Request.QueryString["r"];

        }

I have a dropdown list pulling data from a database.

 <asp:SqlDataSource ID="SqlDataSource3" runat="server" SelectCommand="select WeekID, WeekUpdate from tbl_WeekUpdate where WeekID not in (SELECT WeekUpdate from tbl_StatusTracking10th where ReferralID = '@ReferralID' )" ConnectionString="<%$ ConnectionStrings:TestConnectionString %>" >
   
  <SelectParameters>
        <asp:Parameter DefaultValue="-1"  Name="ReferralID" />
      </SelectParameters>
    </asp:SqlDataSource>

I receive this error.
Conversion failed when converting the varchar value '@ReferralID' to data type int.

Any suggestion
shpresaAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Deepak ChauhanSQL Server DBACommented:
Try this

(SELECT WeekUpdate from tbl_StatusTracking10th
where cast(ReferralID as varchar(50)) = '@ReferralID' )"
0
shpresaAuthor Commented:
it solved the error but the sql query does not seem to recognize referralID. ReferralID is a int number.
0
Deepak ChauhanSQL Server DBACommented:
remove the ' ' from @ReferralID
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.