async Task <ObservableCollection <GroupedUsers> > GetUserGroupsAsync()
{
ObservableCollection <GroupedUsers> groups = new ObservableCollection <GroupedUsers>();
var letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToList();
var users = await SettingsHelper.Instance.op2.GetAllUsers(true, true);
var groupByAlpha = from letter in letters
select new
{
Key = letter.ToString(),
query = from item in users
where item.fullName.StartsWith(letter.ToString(), StringComparison.CurrentCultureIgnoreCase)
orderby item.fullName
select item
};
foreach (var g in groupByAlpha)
{
GroupedUsers groupedUsers = new GroupedUsers();
groupedUsers.Key = g.Key;
foreach (var item in g.query)
{
groupedUsers.Add(item);
}
groups.Add(groupedUsers);
}
return(groups);
}
private void FillAlphabeticallyGroupedUsers()
{
var dict = GetAlphabeticallySortedUsersDictionary();
var listDataKeys = (new List <char>(dict.Keys));
listDataKeys.Sort((a, b) => a.CompareTo(b));
foreach (var key in listDataKeys)
{
var group = new GroupedUsers();
group.AddRange(dict[key]);
group.Title = key.ToString();
AlphabeticallyGroupedUsers.Add(group);
}
}
async Task <ObservableCollection <GroupedUsers> > GetUsersGroupedAsync()
{
ObservableCollection <GroupedUsers> groups = new ObservableCollection <GroupedUsers>();
var query = from item in await SettingsHelper.Instance.op2.GetAllUsers(true, true)
group item by item.fullName.Substring(0, 1).ToUpper() into g
orderby g.Key
select new { GroupName = g.Key, Items = g };
foreach (var g in query)
{
GroupedUsers info = new GroupedUsers();
info.Key = g.GroupName;
foreach (var item in g.Items)
{
info.Add(item);
}
groups.Add(info);
}
return(groups);
}
