async Task ExecuteRefreshCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
feedListViewItemSource.Clear();
var ClearedList = feedListViewItemSource;
var GetPosts = originalMessages;
if (ClearedList.Count() == 0)
{
foreach (var item in GetPosts)
{
ItemsCurrentlyDisplayedInList.Add(item);
}
IsBusy = false;
}
else
{
}
}
public async Task ExecuteSearch(string text)
{
var messagesToDisplay = originalMessages.Where(
message => message.PostText.ToLower()
.Contains(text.ToLower()));
if (messagesToDisplay.Count() == 0)
{
ItemsCurrentlyDisplayedInList.Clear();
}
else if (messagesToDisplay.Count() > 0)
{
var messagesToAdd = messagesToDisplay.Except(ItemsCurrentlyDisplayedInList).ToList();
foreach (var message in messagesToAdd)
{
ItemsCurrentlyDisplayedInList.Add(message);
}
var messagesToRemove = ItemsCurrentlyDisplayedInList.Except(messagesToDisplay).ToList();
foreach (var message in messagesToRemove)
{
ItemsCurrentlyDisplayedInList.Remove(message);
}
}
else if (string.IsNullOrWhiteSpace(text))
{
var messagesToAdd = originalMessages.Except(ItemsCurrentlyDisplayedInList).ToList();
foreach (var item in messagesToAdd)
{
ItemsCurrentlyDisplayedInList.Add(item);
}
}
else
{
//Change UI Label to show that no records are found
}
}
