/// <summary>
/// Searches for any products matching the given keyword and populates the search results.
/// </summary>
public void Search()
{
if (!CanSearch())
{
if (SearchResults != null && SearchResults.Any())
{
SearchResults.Clear();
}
return;
}
try
{
if (OnSearchStarted != null)
{
OnSearchStarted(this, new SearchEventArgs {
SearchTerm = SearchTerm
});
}
#if DEBUG
System.Diagnostics.Debug.WriteLine(string.Format("Searching products for term '{0}'.", SearchTerm));
var searchStopwatch = new System.Diagnostics.Stopwatch();
searchStopwatch.Start();
#endif
var invalidatedMatches = SearchResults.Where(p => !IsMatch(p, SearchTerm)).ToList();
foreach (var match in invalidatedMatches)
{
SearchResults.Remove(match);
}
var newMatches = ItemsToSearch
.Where(p => !SearchResults.Any(r => r.ProductID == p.ProductID) && IsMatch(p, SearchTerm))
.OrderBy(p => p.Name);
foreach (var match in newMatches)
{
SearchResults.Add(match);
}
#if DEBUG
searchStopwatch.Stop();
System.Diagnostics.Debug.WriteLine(string.Format("Searchings products for term '{0}' finished in {1} millisecond(s) and return {2} result(s).", SearchTerm, searchStopwatch.ElapsedMilliseconds.ToString(), SearchResults.Count.ToString()));
#endif
}
catch
{
}
finally
{
if (OnSearchFinished != null)
{
OnSearchFinished(this, new SearchEventArgs {
SearchTerm = SearchTerm, SearchResultsCount = SearchResults.Count
});
}
}
}
bool CanSearch()
{
if (ItemsToSearch == null || !ItemsToSearch.Any() ||
SearchTerm == HelpText || string.IsNullOrEmpty(SearchTerm) || SearchTerm.Trim().Length < SearchTermMinimumLength)
{
return(false);
}
else
{
return(true);
}
}
