internal Expression <Func <TodoItem, bool> > AsExpression()
{
var filters = new List <Expression <Func <TodoItem, bool> > >();
if (Status != null && Status.Any())
{
filters.Add(x => Status.Contains(x.Status));
}
if (CreatedDate != null && !CreatedDate.IsEmpty())
{
filters.Add(x =>
x.CreatedDate >= CreatedDate.Min.GetValueOrDefault(DateTime.MinValue) &&
x.CreatedDate <= CreatedDate.Max.GetValueOrDefault(DateTime.MaxValue));
}
if (Tags != null && Tags.Any())
{
filters.Add(x => Tags.Any(t => x.Tags.Contains(t)));
}
if (!filters.Any())
{
return(null);
}
Expression <Func <TodoItem, bool> > result = null;
foreach (var filter in filters)
{
if (result == null)
{
result = filter;
}
else
{
result = result.And(filter);
}
}
return(result);
}
