public async Task<int> RemoveTagFromLink(Link SelectedLink, Tag SelectedUsedTag) {
try {
_dataService.Links.Attach(SelectedLink);
_dataService.Tags.Attach(SelectedUsedTag);
SelectedLink.Tags.Remove(SelectedUsedTag);
return await _dataService.SaveChangesAsync();
} catch (Exception ex) {
throw ex;
}
}
private void OnAddSelectedTagCommand()
{
using (var repo = Autofac.Resolve<ILinkRepositoryAsync>()) {
if (!String.IsNullOrEmpty(AdditionalTagsString)) { // add new tags from textbox
var newTags = AdditionalTagsString.Split(',');
for (var i = 0; i < newTags.Length; i++)
newTags[i] = newTags[i].Trim();
repo.AddNewTagsToLink(SelectedLink, newTags);
foreach (var tag in SelectedLink.Tags) {
if (!_tagList.Contains(tag))
_tagList.Add(tag);
}
AdditionalTagsString = String.Empty;
SelectedAvailableTag = SelectedUsedTag = null;
} else if (SelectedAvailableTag != null) { // add tag from listbox
try {
repo.AddTagToLink(SelectedLink, SelectedAvailableTag);
AvailableTags.Remove(SelectedAvailableTag);
} catch (Exception ex) {
throw ex;
}
}
}
}
public async Task<int> AddTagToLink(Link selectedLink, Tag selectedAvailableTag) {
try {
_dataService.Links.Attach(selectedLink);
_dataService.Tags.Attach(selectedAvailableTag);
selectedLink.Tags.Add(selectedAvailableTag);
return await _dataService.SaveChangesAsync();
} catch (Exception ex) {
throw ex;
}
}