CODEWITHSUNDEEP
c#jsonjson.netjsonschema
gDexter42
gDexter42

Reputation: 177

Parsing JSON Schema using Json.NET schema throws error System.MethodAccessException

I am trying to experiment with JSON schema validation. I am using the basic example for the schema on the JSON.NET Help page. I get the exception

System.MethodAccessException: Attempt by method
'Newtonsoft.Json.Schema.JSchema.Parse(System.String)' to access method
'Newtonsoft.Json.Utilities.ValidationUtils.ArgumentNotNull(System.Object, System.String)' failed

My code is below

[TestMethod]
    public void prettySimple()
    {
      string schemaJson = @"{
             'type': 'object',
             'properties': {
             'name': {'type':'string'},
             'hobbies': {
             'type': 'array',
             'items': {'type':'string'}
                }
               }
              }";

      JSchema schema = JSchema.Parse(schemaJson);
    }

Upvotes: 1

Views: 1692

Answers (1)

RagtimeWilly
RagtimeWilly

Reputation: 5445

Sounds like a package mismatch between Newtonsoft.Json and Newtonsoft.Json.Schema.

Newtonsoft.Json.Schema relies on Newtonsoft.Json version>= 6.0.8. So make sure it is up to date in your project.

I installed Newtonsoft.Json first and then the schema package and code ran fine for me.

My packages config:

 <packages>   
    <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net45" />   
    <package id="Newtonsoft.Json.Schema" version="1.0.8" targetFramework="net45"/> 
</packages>

Upvotes: 1

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