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The json files are like the text below.

{
  "lmod_file": {
    "crlmod": true, 
    "name": "corn silage;Ffcult with disked radish cover, z4", 
    "params": {
      "param": [
        {
          "data": [
            {
              "file_key": null
            }, 
            {
              "file_key": "999", 
              "value": "vegetations\\Corn, silage"
            }, 
            {
              "file_key": null
            }, 
            {
              "file_key": null
            }, 
            {
              "file_key": "999", 
              "value": "vegetations\\Brassica, cover, forage, release"
            }
          ], 
          "name": "VEG_PTR"
        }, 
        {
          "data": [
            {
              "file_key": "999", 
              "value": "operations\\Cultivator, field 6-12 in sweeps"
            }, 
            {
              "file_key": "999", 
              "value": "operations\\Planter, double disk opnr, 40 in rows"
            }, 
            {
              "file_key": "999", 
              "value": "operations\\Harvest, silage"
            }, 
            {
              "file_key": "999", 
              "value": "operations\\Disk, tandem light finishing"
            }, 
            {
              "file_key": "999", 
              "value": "operations\\Drill or air seeder, double disk"
            }
          ], 
          "name": "OP_PTR"
        }, 
        {
          "data": [
            "0001-04-28", 
            "0001-05-01", 
            "0001-09-15", 
            "0001-09-16", 
            "0001-09-17"
          ], 
          "name": "OP_DATE"
        }, 
        {
          "data": [
            "NULL", 
            "23", 
            "NULL", 
            "NULL", 
            "1500"
          ], 
          "name": "MAN_OP_VEG_NUM_HARV_UNITS"
        }, 
        {
          "data": [
            {
              "file_key": null
            }, 
            {
              "file_key": null
            }, 
            {
              "file_key": null
            }, 
            {
              "file_key": null
            }, 
            {
              "file_key": null
            }
          ], 
          "name": "EXT_RES_PTR"
        }, 
        {
          "data": [
            "NULL", 
            "NULL", 
            "NULL", 
            "NULL", 
            "NULL"
          ], 
          "name": "RES_ADDED"
        }, 
        {
          "data": true, 
          "name": "WEPP_NAMES", 
          "type": "Bool", 
          "value": "true"
        }
      ]
    }, 
    "path": "managements\\CMZ 04\\a.Single Year/Single Crop Templates\\Corn silage"
  }
}


What I have tried:

Models.JsonLmodFileClass.LmodFileClass lmodObj = JsonConvert.DeserializeObject<Models.JsonLmodFileClass.LmodFileClass>(text);


classes defined below:
public class JsonLmodFileClass
{
    public class LmodFileClass
    {

        public class Rootobject
        {
            public Lmod_File lmod_file { get; set; }
            public Rootobject()
            {
                lmod_file = new Lmod_File();
            }
        }

        public class Lmod_File
        {
            public bool crlmod { get; set; }
            public string name { get; set; }
            public Params _params { get; set; }
            public string path { get; set; }
            public Lmod_File()
            {
                _params = new Params();
            }
        }

        public class Params
        {
            public Param[] param { get; set; }

            public Params()
            {
                param = new Param[1];
            }
        }

        public class Param1
        {
            public object data { get; set; }
            public string name { get; set; }
            public string type { get; set; }
            public string value { get; set; }
        }
        public class TJsonArrayOfStr
        {
            public string name { get; set; }
            public List<string> values { get; set; }
            public TJsonArrayOfStr()
            {
                values = new List<string>();
            }
        }
        public class TJsonArrayOfKeyValues
        {
            public string name { get; set; }
            public List<TJsonFileKeyValue> values { get; set; }
            public TJsonArrayOfKeyValues()
            {
                values = new List<TJsonFileKeyValue>();
            }
        }
        public class Param
        {
            public TJsonArrayOfKeyValues vegPtr;            //Array file_key - value
            public TJsonArrayOfKeyValues opPtr;             //Array file_key - value
            public TJsonArrayOfStr       opDate;            //Array of string values
            public TJsonArrayOfStr       manOpVegHarvest;   //Array of string values
            public TJsonArrayOfKeyValues exRes;             //Array file_key - value
            public TJsonArrayOfStr       resAdded;          //Array of string values
            public Param()
            {
                vegPtr = new TJsonArrayOfKeyValues();
                vegPtr.name = "VEG_PTR";

                opPtr       = new TJsonArrayOfKeyValues();
                opPtr.name = "OP_PTR";

                opDate = new TJsonArrayOfStr();
                opDate.name = "OP_DATE";

                manOpVegHarvest = new TJsonArrayOfStr();
                manOpVegHarvest.name = "MAN_OP_VEG_NUM_HARV_UNITS";

                exRes       = new TJsonArrayOfKeyValues();
                exRes.name = "EXT_RES_PTR";

                resAdded = new TJsonArrayOfStr();
                resAdded.name = "RES_ADDED";
            }
        }
    }
}
Posted
Updated 23-Oct-20 4:01am

You've not explained what the error is exactly but you're trying to deserialize to a LmodFileClass but that class doesn't have the "lmod_file" property that's expected. Instead you've created the inner Rootobject class containing this, have you tried moving lmod_file to the parent LmodFileClass?

C#
public class LmodFileClass
{
   public Lmod_File lmod_file { get; set; }

   ...
}
 
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For the Json shared by you, following is the C# model class:
C#
public class Param
{
    public object data { get; set; }
    public string name { get; set; }
    public string type { get; set; }
    public string value { get; set; }
}

public class Params
{
    public IList<Param> param { get; set; }
}

public class LmodFile
{
    public bool crlmod { get; set; }
    public string name { get; set; }
    public Params params { get; set; }
    public string path { get; set; }
}

public class ExampleRoot
{
    public LmodFile lmod_file { get; set; }
}
Usage:
C#
// ExampleRoot myDeserializedClass = JsonConvert.DeserializeObject<ExampleRoot>(myJsonResponse);
 
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