Elasticsearch.Net - Changes after upgrading from v

I have noticed a lot of changes in ES after upgrading it from v1.9 to v5.4.

I am still having doubts about the querying techniques in ES. In v1.9 I have noticed that the Filter option differs.

I am wondering how I can replicate the below code in v5.4

searchDescriptor.Query(q => q.Filtered(m => m.Query(n => matchQuery).Filter(o => o.And(filterContainer.ToArray()))))

Here I see Filter(o => o.And(filterContainer.ToArray()) how is it possible to do an And or an Or operation with v5.4?

Does Filter(o => o.And(filterContainer.ToArray()) indicate that each item in the array are bound with an And operaton?

.And() and .Or() were deprecated in Elasticsearch 2.0 and removed in 5.0. You can replace them with a bool query

for .And(), if you require scoring, then used .Must(). If you don't require scoring, use .Filter().
for .Or(), use .Should().

bool queries can be nested, so it's possible to create complex compound queries.

searchDescriptor.Query(q => q.Filtered(m => m.Query(n => matchQuery).Filter(o => o.And(filterContainer.ToArray()))))

becomes something like

var matchQuery = new MatchQuery { Field = "field", Query = "query" };

var filterContainer = new QueryContainer[] {
    new TermQuery { Field = "field", Value = "value" }
};

client.Search<Message>(s => s
    .Query(q => q
        .Bool(b => b
            .Must(matchQuery)
            .Filter(filterContainer)
        )
    )
);

filtered queries were deprecated in 2.0 and removed in 5.0.

Here I see Filter(o => o.And(filterContainer.ToArray()) how is it possible to do an And or an Or operation with v5.4?

Does Filter(o => o.And(filterContainer.ToArray()) indicate that each item in the array are bound with an And operaton?

For these, pass them to a bool query filter clauses, which are conjunctive i.e. and'ed. If you need to or clauses, you can nest bool queries with filter clauses within a bool query should clauses.