1public class Account
2{
3    public string FullName { get; set; }
4    public string EmailAddress { get; set; }
5
6    [JsonIgnore]
7    public string PasswordHash { get; set; }
8}

1public class PropertyRenameAndIgnoreSerializerContractResolver : DefaultContractResolver
2{
3    private readonly Dictionary<Type, HashSet<string>> _ignores;
4    private readonly Dictionary<Type, Dictionary<string, string>> _renames;
5
6    public PropertyRenameAndIgnoreSerializerContractResolver()
7    {
8        _ignores = new Dictionary<Type, HashSet<string>>();
9        _renames = new Dictionary<Type, Dictionary<string, string>>();
10    }
11
12    public void IgnoreProperty(Type type, params string[] jsonPropertyNames)
13    {
14        if (!_ignores.ContainsKey(type))
15            _ignores[type] = new HashSet<string>();
16
17        foreach (var prop in jsonPropertyNames)
18            _ignores[type].Add(prop);
19    }
20
21    public void RenameProperty(Type type, string propertyName, string newJsonPropertyName)
22    {
23        if (!_renames.ContainsKey(type))
24            _renames[type] = new Dictionary<string, string>();
25
26        _renames[type][propertyName] = newJsonPropertyName;
27    }
28
29    protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
30    {
31        var property = base.CreateProperty(member, memberSerialization);
32
33        if (IsIgnored(property.DeclaringType, property.PropertyName))
34        {
35            property.ShouldSerialize = i => false;
36            property.Ignored = true;
37        }
38
39        if (IsRenamed(property.DeclaringType, property.PropertyName, out var newJsonPropertyName))
40            property.PropertyName = newJsonPropertyName;
41
42        return property;
43    }
44
45    private bool IsIgnored(Type type, string jsonPropertyName)
46    {
47        if (!_ignores.ContainsKey(type))
48            return false;
49
50        return _ignores[type].Contains(jsonPropertyName);
51    }
52
53    private bool IsRenamed(Type type, string jsonPropertyName, out string newJsonPropertyName)
54    {
55        Dictionary<string, string> renames;
56
57        if (!_renames.TryGetValue(type, out renames) || !renames.TryGetValue(jsonPropertyName, out newJsonPropertyName))
58        {
59            newJsonPropertyName = null;
60            return false;
61        }
62
63        return true;
64    }
65}
66