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);
        }
         
    }