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c#jsonasp.net-mvc-4
Deblaton Jean-Philippe
Deblaton Jean-Philippe

Reputation: 11388

Serialize Json to model

I can't figure out, how to convert a Json input into a c# model.

Here is an example of the Json my controller gets :

 [{"name":"StartDate",
   "value":"0",
   "Processors":[[{"processor":{"ProcessorName":"searchAndReplace","ProcessorParameters":[{"ParameterName":"toto"},{"ParameterName":"taa"}]}},
                  {"processor":{"ProcessorName":"searchAndReplace","ProcessorParameters":[{"ParameterName":"toto"},{"ParameterName":"tuuut"}]}}]]},
   {"name":"EndDate","value":"1","Processors":[[]]},
   {"name":"Country","value":"2","Processors":[[]]}]

Here is the signature of my controller :

public JsonResult SendMapping(List<Mapping> MyMappings)

This is my class "Mapping" :

public class Mapping
{
    public string Value { get; set; }
    public string Name { get; set; }
    public List<Processor> Processors { get; set; }
}

And then my "ProcessorModel"

public enum ProcessorNames { SearchAndReplace }

public class ProcessorModel
{
    public Processor processor;
}

public class Processor
{
    public ProcessorNames ProcessorName;
    public List<Parameter> ProcessorParameters;
}

public class Parameter
{
    public List<string> ParameterName;
}

So far, I can get all the name and value. I can also retrieve the first ProcessorName, but not its parameters, nor other ProcessorNames

Upvotes: 1

Views: 1147

Answers (5)

Adarsh Kumar
Adarsh Kumar

Reputation: 1150

It seems to me there is some issue related with lowercase and uppercase property names in your json. Property/Key name must be in same case as defined in class. Please correct that and use below class to Serialize or desalinize.

public class JsonHelper
    {
        /// <summary>
        /// JSON Serialization
        /// </summary>
        public static string JsonSerializer<T>(T t)
        {
            var ser = new DataContractJsonSerializer(typeof(T));
            var ms = new MemoryStream();
            ser.WriteObject(ms, t);
            string jsonString = Encoding.UTF8.GetString(ms.ToArray());
            ms.Close();
            return jsonString;
        }
        /// <summary>
        /// JSON Deserialization
        /// </summary>
        public static T JsonDeserialize<T>(string jsonString)
        {
            var ser = new DataContractJsonSerializer(typeof(T));
            var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            T obj = (T)ser.ReadObject(ms);
            return obj;
        }
    }

Upvotes: 1

keitn
keitn

Reputation: 1298

I also don't think your JSON is quite right.

It should be 

[{
"name": "StartDate",
"value": "0",   
"Processors": [{
    "processor": {"ProcessorName": "searchAndReplace",
    "ProcessorParameters": [{
            "ParameterName": "toto"
        },
        {
            "ParameterName": "taa"
        }]},        
    "processor": {"ProcessorName": "searchAndReplace",
    "ProcessorParameters": [{
            "ParameterName": "toto"
        },
        {
            "ParameterName": "taa"
        }]},
},
{
    "processor": {"ProcessorName": "searchAndReplace",
    "ProcessorParameters": [{
            "ParameterName": "toto"
        },
        {
            "ParameterName": "taa"
        }]},        
    "processor": {"ProcessorName": "searchAndReplace",
    "ProcessorParameters": [{
            "ParameterName": "toto"
        },
        {
            "ParameterName": "taa"
        }]},
}]

}]

Upvotes: 1

Segers-Ian
Segers-Ian

Reputation: 1057

Just a useful tool when you struggle with JSON to Class conversion.

http://json2csharp.com/

This is very useful to win time. Because I have spend a lot of unnecessary time on debugging JSON de-serialization in the past.

Upvotes: 4

jjchiw
jjchiw

Reputation: 4445

{"ParameterName":"toto"} is defined in your json (string) as a string and in the POCO you have it as public List<string> ParameterName; the json string should be {"ParameterName":["toto"]}

Upvotes: 1

keitn
keitn

Reputation: 1298

I don't think you need the ProcessorModel.

You're mapping class should just contain:

   public List<Processor> Processors { get; set; }

instead of 

  public List<ProcessorModel> Processors { get; set; }

Upvotes: 1

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