Question

How to sort List of objects according to specific field (sort expression) and the direction (sort direction)..

For example :

TransactionList.ToList<UserTransactionDTO>()

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Answer 1

Assuming your list is a list of a custom type and you want to sort by one or multiple properties:

var trans = transactions.OrderBy(t => t.PropertyName)
                        .ThenBy(t => t.DifferentPropertyName)

If you want to order descending instead:

var trans = transactions.OrderByDescending(t => t.PropertyName)
                        .ThenByDescending(t => t.DifferentPropertyName)

Enumerable.OrderBy Method