private DataGridFilterState GetFilter()
{
if (Source.All(gr => gr.IsChecked.HasValue && gr.IsChecked.Value))
{
return(new DataGridFilterState
{
FilterInfo = new List <DataGridFilterInfo>
{
new DataGridFilterInfo
{
FilterOperation = DataGridFilterOperation.All,
FilterType = DataGridFilterType.MultiValue,
}
}
});
}
else if (Source.All(gr => gr.IsChecked.HasValue && !gr.IsChecked.Value))
{
return(new DataGridFilterState
{
FilterInfo = new List <DataGridFilterInfo>
{
new DataGridFilterInfo
{
FilterOperation = DataGridFilterOperation.None,
FilterType = DataGridFilterType.MultiValue,
}
}
});
}
else
{
var checkedItems = Source.Aggregate((IEnumerable <ProductElement>) new List <ProductElement>(), (accumulated, gr) => accumulated.Concat(gr.Children.Where(pe => pe.IsChecked))).Select(pe => pe.Product.ProductNumber).ToList();
return(new DataGridFilterState
{
FilterInfo = new List <DataGridFilterInfo>
{
new DataGridFilterInfo
{
FilterOperation = DataGridFilterOperation.IsOneOf,
FilterType = DataGridFilterType.MultiValue,
Value = checkedItems,
}
}
});
}
}
public double LinqAF() => Source.Aggregate(Seed, Func, ResultSelector);
public int LinqAF() => Source.Aggregate(Seed, Func);
