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New Post: Installation problem of JSON.NET in C++/CLI Windows Form Project with VS2010

pc323 — Sun, 19 May 2013 09:24:32 GMT

I would like to use JSON.NET to do the JSON parsing process in my C++/CLI Windows Forms Application. The error occurred during the package installation of Newtonsoft.Json 5.0.5.
The installation log is as follows.

Installing 'Newtonsoft.Json 5.0.5'.
Successfully installed 'Newtonsoft.Json 5.0.5'.
Adding 'Newtonsoft.Json 5.0.5' to test.
Uninstalling 'Newtonsoft.Json 5.0.5'.
Successfully uninstalled 'Newtonsoft.Json 5.0.5'.
Install failed. Rolling back...
Install-Package : Could not install package 'Newtonsoft.Json 5.0.5'. You are trying to install this package
 into a project that targets 'Native,Version=v0.0', but the package does not contain any assembly reference
s or content files that are compatible with that framework. For more information, contact the package autho
r.
At line:1 char:16
+ Install-Package <<<<  Newtonsoft.Json
    + CategoryInfo          : NotSpecified: (:) [Install-Package], InvalidOperationException
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageComman 
   d

Is it possible to use JSON.NET in C++/CLI language? Thank you.

New Post: possible FileVersion and AssemblyVersion mismatch

rotgut — Wed, 15 May 2013 06:34:25 GMT

We are using Json.NET 5.0.5 from NuGet and I noticed that FileVersion is 5.0.5.16108 but the AssemblyVersion is 4.5.0.0, is this by design? I would have thought that AssemblyVersion matched the NuGet version number.

I don't think i have noticed this before in earlier versions.

New Post: For a big data, Jquery call back id randomly appears

fe_us_2011 — Thu, 09 May 2013 17:25:53 GMT

I am confused. After the web service return JsonConvert.SerializeObject result,
there is an error in JSON.parse script. It seems for a larger query, the results always has "Jqueryxxxxxxxxxxxx". Examples below:

"Retries": 0,
"Employ);jQuery1710008925603404620341_1368119766228(ee": "test",

If I do a small query even for that bad record, it is okay. It seems that for a large record, the Jqueryxxxxx gets injected. Does any know have any idea? Thank you for any feedbacks.

New Post: Compact Framework MissingMethodException

triskalguilo — Wed, 08 May 2013 20:16:24 GMT

I'm having a similar problem to this (same exception, same error message). Can you please post your solution?

I realize that this thread is really old, but this is the only instance that Google could find of someone having a similar problem.

New Post: Method not found 'Void Newtonsoft.Json.Serialization.DefaultContractResolver.set_IgnoreSerializableAttribute(Boolean)

JeffTian — Wed, 08 May 2013 03:29:44 GMT

JeanPaulSmit wrote:

I'm having the same issue, it seems to be related to the Visual Studio version you're using and the version of the MVC 4 package (beta/RC). Unfortunately I haven't fixed it.

Is there any workaround for it?

New Post: Deserialize the dataset which contain MySqlDateTime will be exception

atwind — Fri, 03 May 2013 07:06:52 GMT

var ds = GetDs();;
var rst = Serializer.JsonSerialize(ds);

var dsR = Serializer.JsonXDeserialize<DataSet>(rst);

System.ArgumentOutOfRangeException : 指定的参数已超出有效值的范围。
在 Newtonsoft.Json.Converters.DataTableConverter.GetColumnDataType(JsonToken tokenType) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\Converters\DataTableConverter.cs: line 139
在 Newtonsoft.Json.Converters.DataTableConverter.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\Converters\DataTableConverter.cs: line 105
在 Newtonsoft.Json.Converters.DataSetConverter.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\Converters\DataSetConverter.cs: line 81
在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable(JsonConverter converter, JsonReader reader, Type objectType, Object existingValue) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs: line 1378
在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs: line 164
在 Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\JsonSerializer.cs: line 565
在 Newtonsoft.Json.JsonConvert.DeserializeObject(String value, JsonSerializerSettings settings) 位置 c:\Temp\Json\Working\Newtonsoft.Json\Src\Newtonsoft.Json\JsonConvert.cs: line 913
在 HD.Serialization.Serializer.JsonXDeserialize(String jsonString) 位置 Serializer.cs: line 35
在 HD.DataAccessTest.MySqlDataTimeConvertTest.DataSetToJsonTest() 位置 MySqlDataTimeConvertTest.cs: line 25

New Post: Json format keyvalues only

stendard — Tue, 23 Apr 2013 20:43:24 GMT

Hello How to get the following format using JSON.NET?

{
"123": "CustomerA",
"345":"CustomerB",
"789":"CustomerC"
}

Currently when I Serialize my object I get the data in the following format
[
{
Name: "CustomerA",
ID: "123"
}
{
Name: "CustomerB",
ID: "345"
}
etc etc
]

New Post: 4.5.11 to 5.0.3 Breaking Changes?

JamesNK — Sun, 21 Apr 2013 22:32:50 GMT

The release notes against each download.

Note that the JSON schema stuff will tend to change. The JSON schema spec hasn't been finalized and is continually changing.

New Post: Parsing Nested Object as List

MesserViator — Fri, 19 Apr 2013 12:55:49 GMT

i have a json formed as this

{ "caption" : "",
  "description" : "",
  "id" : 5706,
  "images" : { "full" : { "height" : 338,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4.jpg",
          "width" : 619
        },
      "large" : { "height" : 338,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4.jpg",
          "width" : 619
        },
      "large-thumb" : { "height" : 140,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4-222x140.jpg",
          "width" : 222
        },
      "medium" : { "height" : 163,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4-300x163.jpg",
          "width" : 300
        },
      "slider-image" : { "height" : 300,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4-619x300.jpg",
          "width" : 619
        },
      "small-thumb" : { "height" : 60,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4-80x60.jpg",
          "width" : 80
        },
      "thumbnail" : { "height" : 150,
          "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4-150x150.jpg",
          "width" : 150
        }
    },
  "mime_type" : "image/jpeg",
  "parent" : 5705,
  "slug" : "htc-desire-l-lead4",
  "title" : "htc-desire-l-lead4",
  "url" : "http://tecnonation.net/wp-content/uploads/2013/04/htc-desire-l-lead4.jpg"
}

and i need to Serialize the Images Array in the Image class Declared this way

public class Image
    {
        [JsonProperty("???")]
        public string Type { get; set; }

        [JsonProperty("url")]
        public string Url { get; set; }

        [JsonProperty("width")]
        public int Width { get; set; }

        [JsonProperty("height")]
        public int Height { get; set; }
    }

with type as the Name of the object
how can i solve this?

New Post: 4.5.11 to 5.0.3 Breaking Changes?

rcollette — Thu, 18 Apr 2013 18:24:47 GMT

Is there a list somewhere of breaking changes between 4.5.11 and 5.0.3?

I am getting a compile error because the JsonSchema type no longer has Identity or Options properties.

New Post: Selecting the Correct constructor Without an Attribute?

JamesNK — Wed, 17 Apr 2013 03:07:51 GMT

Yes. ConstructorHandling.AllowNonPublicDefaultConstructor

It is covered in the documentation... http://james.newtonking.com/projects/json/help/index.html?topic=html/SerializationSettings.htm

New Post: JsonSchemaGenerator problems

TURNSKIN — Fri, 12 Apr 2013 09:07:23 GMT

added support for underlying types too:

        private static JsonSchema GetJsonSchemaFromObject(Type type)
        {
            var schemaGenerator = new JsonSchemaGenerator();

            var jSchema = schemaGenerator.Generate(type);

            jSchema = MapSchemaTypes(jSchema, type);

            return jSchema;
        }
        private static JsonSchema MapSchemaTypes(JsonSchema jSchema, Type type)
        {
            foreach (var js in jSchema.Properties)
            {
                Type fieldType = type.GetProperty(js.Key).PropertyType;

                if (fieldType.IsGenericType
                    && fieldType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
                {
                    Type underlyingType = Nullable.GetUnderlyingType(fieldType);
                    if (underlyingType == typeof(DateTime))
                        js.Value.Format = "date-time";
                    else if (underlyingType.BaseType == typeof(Enum))
                        js.Value.Enum = new JArray(Enum.GetNames(underlyingType));
                }
                else if (fieldType == typeof(DateTime))
                {
                    js.Value.Format = "date-time";
                }
                else if (fieldType.BaseType == typeof(Enum))
                {
                    js.Value.Enum = new JArray(Enum.GetNames(fieldType));
                }
                else if (js.Value.Items != null && js.Value.Items.Any())
                {
                    foreach (var item in js.Value.Items)
                    {
                        var arg = fieldType.GetGenericArguments();
                        if (arg.Any())
                            fieldType = arg[0];

                        MapSchemaTypes(item, fieldType);
                    }
                }
                else if (js.Value.Properties != null && js.Value.Properties.Any())
                {
                    MapSchemaTypes(js.Value, fieldType);
                }
            }
            return jSchema;
        }

New Post: Changing the CDATA SerializeXmlNode Behavior

pixelshaded — Wed, 10 Apr 2013 23:09:47 GMT

Just some background: I am getting Xml from a Pick database and converting it to json because we would like to move away from Xml. I am writing a new version of software that will expect json from Pick. I am running in to an issue when converting the Xml to Json with Xml containing CDATA.

In that case of

<DESCRIPTION><![CDATA[This is that <font color=\"orange\">HOODIE</font> that everyone wants!]]></DESCRIPTION>

I would like to get back

{ "description": "This is that <font color=\"orange\">HOODIE</font> that everyone wants!" }

Instead of

{ "description" : { "#cdata-sections": "This is that <font color=\"orange\">HOODIE</font> that everyone wants!" }}

I've looked in to overriding the XmlNodeConverter but that thing is a beast and uses a lot of internal utility classes. Is this something that I could do with a custom contract resolver?

The problem really is that I dont know when an Xml node will contain CDATA and ideally I'd like it to be converted to a string rather than an object with a #cdata-section field. I could create a CdataConverter to check whether the json is an object and contains cdata, but then every string in my C# objects would need to use that converter.

New Post: Why the Linq namespace throw exceptions of the base class Exception?

ephemeregames — Wed, 10 Apr 2013 14:24:45 GMT

In a lot of places in this namespace, when an error occur, an exception is raised with the class Exception.

Why not Json.Net-related exception classes?
In my code, I have to catch Exception when an error occur with Json.Net, which is far from ideal.

Are there plans for such Json.Net-related exceptions in the future?

New Post: How to deserealize undefined and nested Hashtable structure?

Acies — Mon, 08 Apr 2013 14:46:48 GMT

How to deserealize undefined and nested Hashtable structure with json.net? for example: @"{"a" : {"b" : 1}}"?

Hashtable data = JsonConvert.DeserializeObject<Hashtable>(json_str)

returns Newtonsoft.Json.Linq.JObject at data["a"], instead Hashtable

New Post: Boolean value - parse error

robert_rdk — Fri, 05 Apr 2013 13:45:34 GMT

This is just a small part of the original JSON file. In the original file it's a capital 'T'.
But the capital 'T' is causing the problem. I've changed it to lowercase and it's fixed now.
Thank you very much !!

New Post: Boolean value - parse error

clechasseur — Fri, 05 Apr 2013 13:39:41 GMT

Are you sure this is valid JSON? I think "true" should have a lowercase T.

New Post: Boolean value - parse error

robert_rdk — Fri, 05 Apr 2013 13:20:20 GMT

I try to pase a simple JSON string.

string JSON = @"{""isGuest"" : True}";

JObject o = JObject.Parse(JSON);   // error
//. . .

But an exeption occured;

'Unexpected character encountered while parsing value'

It seems that the unquoted value 'True' is the cause of the error.
I've to parse a file with several boolean values as in my example.

How can i avoid an exeption ?

New Post: Array of Generic Objects

shaggygi97 — Tue, 02 Apr 2013 15:10:04 GMT

I'm trying to learn more about JSON and need to know how to deserialize an array that includes various objects derived from a base Class. Meaning, if I had a base Class named Employee that had a few common properties and then two other Classes named Manager and Gopher that had other specific properties.... how do you deserialize into the respective object?

Let's say the array included the following objects...

// NOTE: This is not the JSON text; only the object variables in C#.
[ manager1, gopher1, gopher2, manager2, manager3, gopher3 ]

I believe once it is deserialized into an arrary or List<Employee> I could cycle through and check it like....

foreach(Employee eNext in employees)
{

if (eNext is Manager)
{
    // do this...
}
else if(eNext is Gopher)
{
    // do this...
}

}

I've seen where some JSON text includes @type or @class, but not sure how to use appropriately. Any help is appreciated.

New Post: Converter support in WinRT / Metro

Bolli — Mon, 01 Apr 2013 22:19:02 GMT

Thanks, that was driving me nuts.