Linq/Lambda

How would one convert this linq/lambda expression to .net cobol

returnEnumerable.Range(0, reader.FieldCount).ToDictionary(
                     i => reader.GetName(i),
                     i => reader.GetValue(i));
What I have so far is invoke type Enumerable::Range(0, reader::FieldCount)::ToDictionary(
I do not know how to covert the lambda expressions to .net cobol or is it possible?.