Cannot deserialize the JSON array e g 1 2 3 into type because type requires JSON object e g name value to deserialize correctly

Question

I have this JSON                    Attributes                                    Key    Name                    Value                          Value    Acc 1                        Values                              Acc 1                                                                                        Key    Id                    Value                          Value    1                        Values                              1                                                                            Name    account            Id    1                        Attributes                                    Key    Name                    Value                          Value    Acc 2                        Values                              Acc 2                                                                                        Key    Id                    Value                          Value    2                        Values                              2                                                                            Name    account            Id    2                        Attributes                                    Key    Name                    Value                          Value    Acc 3                        Values                              Acc 3                                                                                        Key    Id                    Value                          Value    3                        Values                              3                                                                            Name    account            Id    2            And I have these classes   public class RetrieveMultipleResponse       public List lt Attribute gt  Attributes   get  set        public string Name   get  set        public string Id   get  set       public class Value        JsonProperty  Value        public string value   get  set        public List lt string gt  Values   get  set       public class Attribute       public string Key   get  set        public Value Value   get  set        I am trying to deserialize the above JSON using the code below   var objResponse1   JsonConvert DeserializeObject lt RetrieveMultipleResponse gt  JsonStr     but I am getting this error      Cannot deserialize the current JSON array  e g   1 2 3   into type    test Model RetrieveMultipleResponse  because the type requires a JSON   object  e g    name   value    to deserialize correctly  To fix this   error either change the JSON to a JSON object  e g    name   value      or change the deserialized type to an array or a type that implements   a collection interface  e g  ICollection  IList  like List that can   be deserialized from a JSON array  JsonArrayAttribute can also be   added to the type to force it to deserialize from a JSON array  Path       line 1  position 1

User · Accepted Answer

Your json string is wrapped within square brackets       hence it is interpreted as array instead of single RetrieveMultipleResponse object  Therefore  you need to deserialize it to type collection of RetrieveMultipleResponse  for example    var objResponse1        JsonConvert DeserializeObject lt List lt RetrieveMultipleResponse gt  gt  JsonStr

User · Answer

If one wants to support Generics  in an extension method  this is the pattern     public  static List lt T gt  Deserialize lt T gt  this string SerializedJSONString        var stuff   JsonConvert DeserializeObject lt List lt T gt  gt  SerializedJSONString       return stuff      It is used like this   var rc   new MyHttpClient URL     This response is the JSON Array  see posts above  var response   rc SendRequest    var data   response Deserialize lt MyClassType gt       MyClassType looks like this  must match name value pairs of JSON array    JsonObject MemberSerialization   MemberSerialization OptIn    public class MyClassType         JsonProperty PropertyName    Id        public string Id   get  set          JsonProperty PropertyName    Name        public string Name   get  set          JsonProperty PropertyName    Description        public string Description   get  set          JsonProperty PropertyName    Manager        public string Manager   get  set          JsonProperty PropertyName    LastUpdate        public DateTime LastUpdate   get  set         Use NUGET to download Newtonsoft Json add a reference where needed     using Newtonsoft Json

User · Answer

Use this  FrontData is JSON string  var objResponse1   JsonConvert DeserializeObject lt List lt DataTransfer gt  gt  FrontData      and extract list  var a   objResponse1 0   var b   a CustomerData

User · Answer

Can t add a comment to the solution but that didn t work for me  The solution that worked for me was to use    var des    MyClass Newtonsoft Json JsonConvert DeserializeObject response  typeof MyClass     return des data Count ToString       Deserializing JSON array into strongly typed  NET object

User · Answer

var objResponse1    JsonConvert DeserializeObject lt List lt RetrieveMultipleResponse gt  gt  JsonStr    worked

[c#] Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.g. {"name":"value"}) to deserialize correctly

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