CODEWITHSUNDEEP
c#json
Caz1224
Caz1224

Reputation: 1569

C# - Mapping JSON Values to List with numbers as IDs

I have ran into an issue while pulling data down from an API (Not mine and I can't change the way its formatted) and then mapping that onto a C# List.

A small sample of the JSON looks like this (There are thousands of records in the form_values section and thousands of records)

JSON Sample:

{
   "records":[
      {
         "status":"4",
         "version":5,
         "form_values":{
            "4015":"TextValue",
            "5919":"TextValue",
            "6127":"TextValue",
            "7868":"0",
            "q311":"TextValue",
            "r83b":"0"
         }
      }
   ],
   "current_page":1,
   "total_pages":1,
   "total_count":1,
   "per_page":12
}

Currently I am putting the JSON result into a strongly typed list with the following code (This uses Newtonsoft.Json):

C# JSON Deserialize to List

JsonConvert.DeserializeObject<Data>(json_data);

It is in the Data.cs Class that I am having issues as C# will not allow a variable to start with a int.

What I have tried, with no success is using the Runtime.Serilization DataMember attribute.

Data.cs

        [DataMember(Name = "4015")]
        public string textfeild { get; set; }

The Issue:

This results in a null value being set regardless of data behind. All of the fields that start with a letter work fine, so I am confident my JSON is being written to the List correctly, just need a solution for these annoying ID's that start with a number!

Any help would be much appreciated.

Upvotes: 0

Views: 259

Answers (3)

error_handler
error_handler

Reputation: 1201

 Use List<KeyValuePair<string, string>>

 var dictionary = JsonConvert.DeserializeObject<List<KeyValuePair<string, string>>>(dict)
                             .ToDictionary(x => x.Key, y => y.Value);

Use a custom object that represents your pairs and then create a dictionary from your collection.

  var output = JsonConvert.DeserializeObject<List<Temp>>(dict);
            var dictionary = output.ToDictionary(x => x.Key, y => y.Value);

            public class Temp
            {
                public string Key { get; set; }
                public string Value { get; set; }
            }

also you can get a reference from Here

Upvotes: 0

Federico Dipuma
Federico Dipuma

Reputation: 18295

You have two options, the first one is to use JsonProperty attribute:

public class FormValues
{
    [JsonProperty(PropertyName = "4015")]
    public string T4015 { get; set; }
    [JsonProperty(PropertyName = "5919")]
    public string T5919 { get; set; }
    [JsonProperty(PropertyName = "6127")]
    public string T6127 { get; set; }
    [JsonProperty(PropertyName = "7868")]
    public string T7868 { get; set; }
    public string q311 { get; set; }
    public string r83b { get; set; }
}

public class Record
{
    public string status { get; set; }
    public int version { get; set; }
    public FormValues form_values { get; set; }
}

public class Data
{
    public List<Record> records { get; set; }
    public int current_page { get; set; }
    public int total_pages { get; set; }
    public int total_count { get; set; }
    public int per_page { get; set; }
}

The second one is to use a Dictionary<string, string> for your form_values property:

public class Record
{
    public string status { get; set; }
    public int version { get; set; }
    public Dictionary<string, string> form_values { get; set; }
}

public class Data
{
    public List<Record> records { get; set; }
    public int current_page { get; set; }
    public int total_pages { get; set; }
    public int total_count { get; set; }
    public int per_page { get; set; }
}

If your form_values are not fixed, then you should stick with the second option.

Upvotes: 2

M.S.
M.S.

Reputation: 4423

Create a property for form_values as Dictionary

public Dictionary<string, string> form_values { get; set; }

Upvotes: 1

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