// Private helpers
private async Task PopulateArticles()
{
// 1. Clear existing data grid source
Articles.Clear();
List <Article> articles = new List <Article>();
await Task.Run(() =>
{
// 2. Fetch artilces from database
foreach (Article article in new ArticleRepo().LoadArticles(
Users[UserIndex],
FilterTitle,
FilterAuthors.ToList(),
FilterKeywords.ToList(),
FilterYear,
FilterPersonalComment,
_offset,
ItemsPerPage,
SelectedSection,
_currentSort))
{
articles.Add(article);
}
});
// 3. Populate article collection
foreach (Article article in articles)
{
this.Articles.Add(article);
}
}
public void Clear(object input = null)
{
FilterTitle = null;
FilterAuthors.Clear();
FilterKeywords.Clear();
FilterYear = null;
FilterPersonalComment = null;
Articles.Clear();
}
public async void LoadArticles(object input = null)
{
try
{
_workStatus(true);
List <Article> articles = new List <Article>();
await Task.Run(() =>
{
// 2. Calculate total pages
int record_count = new ArticleRepo().GetRecordCount(
Users[UserIndex],
FilterTitle,
FilterAuthors.ToList(),
FilterKeywords.ToList(),
FilterYear,
FilterPersonalComment,
SelectedSection);
if ((record_count % ItemsPerPage) == 0)
{
TotalPages = record_count / ItemsPerPage;
}
else
{
TotalPages = (record_count / ItemsPerPage) + 1;
}
CurrentPage = 1;
});
await PopulateArticles();
if (!string.IsNullOrEmpty(SelectedSection) && SelectedSection != "None")
{
this.IsSectionSelected = true;
}
else
{
this.IsSectionSelected = false;
}
_workStatus(false);
}
catch (Exception e)
{
new BugTracker().Track("Data View", "Load Articles", e.Message, e.StackTrace);
_dialogService.OpenDialog(new DialogOkViewModel("Something went wrong.", "Error", DialogType.Error));
}
finally
{
_workStatus(false);
}
}
private static Parser <string> ToKeyword(FilterKeywords keyword)
{
var keywordRegexp = keyword.GetDescription();
return(Parse.Regex(keywordRegexp).Token());
}
