Conversion failed when converting the nvarchar value 't5sxdb

Question

Hai all,i have a small problem here.

 protected void Page_Load(object sender, EventArgs e)

        {

             string id = System.Web.HttpContext.Current.Session.SessionID;

            if (IsPostBack==false)

            {

                string connn = ConfigurationManager.ConnectionStrings["conn"].ConnectionString;

                SqlConnection con = new SqlConnection(connn);

                con.Open();

                string str = "select decription,url from tb_userdata inner join tb_userlogin on tb_userdata.uidfromtb1=tb_userlogin.id where tb_userlogin.id=@id";

                SqlCommand cmd = new SqlCommand(str,con);

                cmd.Parameters.AddWithValue("@id", id);

                SqlDataAdapter da = new SqlDataAdapter(cmd);

                DataSet ds = new DataSet();

                da.Fill(ds);...............at this line i got this error

Conversion failed when converting the nvarchar value 't5sxdbfbcwlpfsdmv4t1amyx' to data type int.

                DataList1.DataSource = ds;

                DataList1.DataBind();

            }


and my table is

CREATE TABLE [dbo].[tb_userdata](

[id] [int] NOT NULL,

[uidfromtb1] [int] NOT NULL,

[Name] [nvarchar](max) NULL,

[decription] [nvarchar](max) NULL,

[url] [nvarchar](max) NULL

) ON [PRIMARY]

i thoght evrythibg is fine .what is wrong with my code.anyone help me out

Thanks and Regards