Question 358341 in Firebase Question posted in
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How do I convert Firebase Dictionary to class in C#

I am retrieving a list of users from Firebase but they are coming in as KVP.

{[FirstName, Eric]}
{[LastNae, EricLastName]}
{[Email, [email protected]]}
{[Phone, 12345]}

I need to convert this list of KVP to a list of Object Type named Person Class

Person
{
string FirstName {get; set;}
string LastName {get; set;}
string Email {get; set;}
string Phone {get; set;}
}

What is the most quick and efficient way of doing so:

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2

Answers


  1. 0

    Not sure how the rest of your backend is architected but you can try something like using LINQ to create a new Person object for each KVP you obtained from Firebase.

    public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Email { get; set; }
    public string Phone { get; set; }
}

    public class FirebaseConverter
{
    public List<Person> ConvertToPersonList(List<KeyValuePair<string, string>> firebaseData)
    {
        return firebaseData
            .GroupBy(kv => kv.Key)
            .Select(group => new Person
            {
                FirstName = GetValueByKey(group, "FirstName"),
                LastName = GetValueByKey(group, "LastName"),
                Email = GetValueByKey(group, "Email"),
                Phone = GetValueByKey(group, "Phone"),
            })
            .ToList();
    }

    private string GetValueByKey(IEnumerable<KeyValuePair<string, string>> group, string key)
    {
        return group.FirstOrDefault(kv => kv.Key == key).Value;
    }
}

    If you don’t want to use LINQ though, you can store all the KVPs in a list and iterate through them, and then map the key-value pairs to the properties of the Person class. I would personally choose LINQ implementation though as it makes the code cleaner.

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  2. 0

    Something like the one below would work as well. This includes iterating through your dictionary and assigning values to Person object.

                // Assume you have key value pair dictionary  as below
            Dictionary<string, string> firebaseDict = new Dictionary<string, string>
            {
                { "FirstName", "Eric" },
                { "LastName", "EricLastName" },
                { "Email", "[email protected]" },
                { "Phone", "12345" }
            };
    
            // You can convert the Firebase dictionary to a list of Person objects

            List<Person> people = new List<Person>();
            foreach (var kvp in firebaseDict)
            {
                Person person = new Person();
                switch (kvp.Key)
                {
                    case "FirstName":
                        person.FirstName = kvp.Value;
                        break;
                    case "LastName":
                        person.LastName = kvp.Value;
                        break;
                    case "Email":
                        person.Email = kvp.Value;
                        break;
                    case "Phone":
                        person.Phone = kvp.Value;
                        break;
                    default:
                        // Handle unexpected keys or ignore them
                        break;
                }
                people.Add(person);
            }
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