How can we develop multi select datalist on the basis of different searches for different element searched for?

Hi,

List<Account> accountList = new List<Account>();
List<Contact> contactList = new List<Contact>();

for (Integer i = 0; i < 10; i++) {
accountList.add(new Account(Name = 'Boards Test Accout ' + i));
contactList.add(new Contact(
FirstName = 'Boards ' + i,
LastName = 'Test Contact'
));
}

List<sObject> objects = new List<sObject>();
objects.addAll((List<sObject>)(accountList));
objects.addAll((List<sObject>)(contactList));

insert objects;