ListItem Client OM

Listing all items in sharepoint list usingClient Object Model in SharePoint 2010(Client OM)

ClientContext cntx=new ClientContext("Site URL");
Web web = cntx.Current.Web;
List list=web.Lists.GetByTitle("List Name");
CamlQuery query=new CamlQuery();
query.ViewXML="";
ListItemCollection cols=list.GetItems(q);
cntx.Load(cols);
foreach(var item in cols)
{
list1.Items.Add(item["Title"]);
}
cntx.ExecuteQuery();