Systax error in my code, Please help me. [Resolved]

I write this code for insert checklistbox value in database.

Dim qry As String = ""
Dim usr As String = "nuwan"

Dim list As ListItem

For Each list In CheckBoxList1.Items
If (list.Selected) Then

qry += "insert into privilage (user,page) values('" + usr + "','" + list + "')"

End If

Next

If (qry <> "") Then

Dim sqlcmd As SqlCommand = New SqlCommand(qry, sqlcon)
sqlcmd.CommandType = CommandType.Text
sqlcon.Open()
sqlcmd.ExecuteNonQuery()
sqlcon.Close()

End If


I got following error. how I fix it.Please help me

error BC30452: Operator '+' is not defined for types 'String' and 'System.Web.UI.WebControls.ListItem'.

Rathnayake [Resolved]