Cannot cast 'object' type to 'Tuple<T1, T2, T3>'

[justinushermawan]

I'm trying to run a dynamic query with a model as below:

    public class Index
    {
        public long Position { get; set; }
    
        public object[] Values { get; set; }
    }

And with a sample of data like this:

    var indexes = new Dictionary<long, Index>();
    indexes.Add(1, new Index { Position = 1000, Values = new object[3] { "Welly", "Chandra", Tuple.Create<int, int>(1, 2) } });
    indexes.Add(2, new Index { Position = 1001, Values = new object[3] { "Darma", "Angelo", Tuple.Create<int, int>(3, 4) } });
    indexes.Add(3, new Index { Position = 1002, Values = new object[3] { "Abby", "Yeremia", Tuple.Create<int, int>(5, 6)} });
    indexes.Add(4, new Index { Position = 1003, Values = new object[3] { "Yonathan", "Gunawan", Tuple.Create<int, int>(7, 8)} });
    indexes.Add(5, new Index { Position = 1004, Values = new object[3] { "Aldy", "Santoso", Tuple.Create<int, int>(11, 12)} });
    var queryable = indexes.Values.AsQueryable();
    var result = queryable.Where("Values[1].Equals(\"Yeremia\") || ((Tuple<int, int>) Values[2]).Item2.Equals(8)").ToList();

But it always throw an exception:

Exception: No property or field 'Tuple' exists in ...

Is it not possible to use type-casting while querying here?

[StefH]

This issue contains two problems :

• Tuple is not recognized
• A generic cast is not suported?