private async Task Filter(MemberPathFilterText memberPathFilterText)
{
var propertyInfo = typeof(Item).GetProperty(memberPathFilterText.MemberPath);
if (propertyInfo == null)
{
this.CollectionViewSource.Filter = null;
return;
}
Interlocked.Increment(ref this._filterWaitingCount);
await Task.Delay(500);
if (Interlocked.Decrement(ref this._filterWaitingCount) != 0)
{
return;
}
this.CollectionViewSource.Filter = o =>
{
if (o is Item item)
{
return(propertyInfo.GetValue(item).ToString().Contains(memberPathFilterText.FilterText));
}
return(false);
};
}
private async Task Filter(MemberPathFilterText memberPathFilterText)
{
if (string.IsNullOrWhiteSpace(memberPathFilterText.FilterText))
{
this._myRemoteOrDbDataSourceAsyncProxy.FilterDescriptionList.Remove(memberPathFilterText
.MemberPath);
}
else
{
this._myRemoteOrDbDataSourceAsyncProxy.FilterDescriptionList.Add(
new FilterDescription(memberPathFilterText.MemberPath, memberPathFilterText.FilterText));
}
Interlocked.Increment(ref this._filterWaitingCount);
await Task.Delay(500);
if (Interlocked.Decrement(ref this._filterWaitingCount) != 0)
{
return;
}
this._myRemoteOrDbDataSourceAsyncProxy.FilterDescriptionList.OnCollectionReset();
this._myDataVirtualizedAsyncFilterSortObservableCollection.Clear();
}
