Read values from SharePoint people picker control in visual web part

Below is the code snippet to read values from SharePoint people picker control and update list item

 SPFieldUserValueCollection valueColl = new SPFieldUserValueCollection();

for (int i = 0; i < peoplePickerControlId.ResolvedEntities.Count; i++)
{
       PickerEntity peEntity = (PickerEntity)peoplePickerControlId.ResolvedEntities[i];
       SPUser user = SPContext.Current.Web.EnsureUser(peEntity.Key);
       SPFieldUserValue userVal = new SPFieldUserValue(web, user.ID, user.Name);
       valueColl.Add(userVal);
}

item["User"] = valueColl;