ASP.NET

sqlcmd.CommandText = "Select Reserve_ID from Reservedvehicle"
        sqlcmd.Connection = sqlconn
        Dim sqlrdr As SqlDataReader = sqlcmd.ExecuteReader
        While sqlrdr.Read()
            Dim tblcell As TableCell = New TableCell()
            Dim tblrow As TableRow = New TableRow()
            Dim lnk As New LinkButton
            lnk.Text = "click here for details "
            lnk.CommandArgument = (sqlrdr("Reserve_ID"))
            'add Click functionaliuty    
            AddHandler lnk.Command, AddressOf OnClickLink
            tblcell.Controls.Add(lnk)
            tblrow.Cells.Add(tblcell)
            Table1.Rows.Add(tblrow)
        End While
        sqlrdr.Close()

Protected Sub OnClickLink(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.CommandEventArgs)
        Dim lnkbutton As linkbutton = sender
        Dim param As String = e.CommandArgument
        FormView1.Visible = True
        Dim myConnection As New SqlConnection("Server=localhost;Database=Reservation;uid=sa;pwd=server")
        Dim ad As New SqlDataAdapter("SELECT * FROM reservedvehicle ", myConnection)
        Dim ds As New DataSet()
        ad.Fill(ds)
        FormView1.DataSource = ds
        FormView1.DataBind()
    End Sub

<asp:HyperLinkField DataNavigateUrlFields="employee_id, <%= Request.Querystring["department_id"] %>"
DataNavigateUrlFormatString="employee_details.aspx?employee_id={0}&department_id{1}" HeaderText="Action" Text="View Details" />

Parser Error Message: Literal content ('<asp:HyperLinkField DataNavigateUrlFields="candidate_id,') is not allowed within a 'System.Web.UI.WebControls.DataControlFieldCollection'.