Web Forms :: Checkbox List Selection From Database

I have Checkbox list from database  and selection list also from database . i can fill check boxlist from db in below  . i have one datatable for selection items .i want that values to be selected in this checklist.

dt pagelist have 1 to 10 
dt checklist have 1,3,5,7
DataTable dt = obj.checklist();
public void pagelist() {
DataTable pl = obj.pagelist();
foreach (DataRow row in pl.Rows) {
ListItem item = new ListItem();
item.Text = row["Previlage_pageName"].ToString();
item.Value = row["Previliges_ID"].ToString();
CHpagelist.Items.Add(item);
}
}