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How to use DateTimeNull class of NBi.Core.Calculation.Predicate.DateTime package

Best NBi code snippet using NBi.Core.Calculation.Predicate.DateTime.DateTimeNull

PredicateFactory.cs

Source:PredicateFactory.cs

...66                        case ComparerType.LessThanOrEqual: return new DateTimeLessThanOrEqual(not, (IScalarResolver)reference);67                        case ComparerType.Equal: return new DateTimeEqual(not, (IScalarResolver)reference);68                        case ComparerType.MoreThanOrEqual: return new DateTimeMoreThanOrEqual(not, (IScalarResolver)reference);69                        case ComparerType.MoreThan: return new DateTimeMoreThan(not, (IScalarResolver)reference);70                        case ComparerType.Null: return new DateTimeNull(not);71                        case ComparerType.WithinRange: return new DateTimeWithinRange(not, (IScalarResolver)reference);72                        case ComparerType.OnTheDay: return new DateTimeOnTheDay(not);73                        case ComparerType.OnTheHour: return new DateTimeOnTheHour(not);74                        case ComparerType.OnTheMinute: return new DateTimeOnTheMinute(not);75                        default:76                            throw new ArgumentOutOfRangeException($"DateTime columns don't support the '{comparerType.ToString().ToDashedCase()}' comparer.");77                    }78                case ColumnType.Boolean:79                    switch (comparerType)80                    {81                        case ComparerType.Equal: return new BooleanEqual(not, (IScalarResolver)reference);82                        case ComparerType.Null: return new BooleanNull(not);83                        case ComparerType.True: return new BooleanTrue(not);84                        case ComparerType.False: return new BooleanFalse(not);...

DateTimeNull.cs

Source:DateTimeNull.cs

...6using System.Text;7using System.Threading.Tasks;8namespace NBi.Core.Calculation.Predicate.DateTime9{10    class DateTimeNull : AbstractPredicate11    {12        public DateTimeNull(bool not)13            :base(not)14        { }15        protected override bool Apply(object x)16        {17            return x == null || x == DBNull.Value || (x as string)=="(null)";18        }19        public override string ToString() => $"is null";20    }21}...

DateTimeNull

Using AI Code Generation

1var dateTimeNull = new DateTimeNull();2var result = dateTimeNull.Evaluate(new DateTime(2016, 1, 1));3var dateTimeNull = new DateTimeNull();4var result = dateTimeNull.Evaluate(new DateTime(2016, 1, 1));5var dateTimeNull = new DateTimeNull();6var result = dateTimeNull.Evaluate(new DateTime(2016, 1, 1));

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