// private (asynchronous) helper methods
private async Task Insert(String name, int score)
{
// insert name and score into local database
await this.service.InsertIntoLocalTable(name, score);
// update observable collection bind to UI
HighScoreEntry next = new HighScoreEntry()
{
Name = name,
Score = score,
Position = 1
};
if (this.highScorers.Count == 0)
{
// empty collection
this.highScorers.Add(next);
}
else
{
// seach position in observable collection, where to insert
int i = this.highScorers.Count;
while (i > 0)
{
HighScoreEntry entry = this.highScorers[i - 1];
if (score > entry.Score)
{
i--;
}
else
{
break;
}
}
// insert new entry
this.highScorers.Insert(i, next);
}
// adjust property 'Position' of all entries
for (int i = 0; i < this.highScorers.Count; i++)
{
HighScoreEntry entry = this.highScorers[i];
entry.Position = i + 1;
}
}
private async Task Sync()
{
// retrieve actual list of high scores from backend
List <FirstHighScores> currentHighScores = await this.service.Sync();
this.highScorers.Clear();
// map list into observable collection (without AutoMapper :-( )
for (int i = 0; i < currentHighScores.Count; i++)
{
HighScoreEntry entry = new HighScoreEntry()
{
Name = currentHighScores[i].Name,
Score = currentHighScores[i].Score,
Position = i + 1
};
this.highScorers.Add(entry);
}
}
