Develop Reference

How to deserialize JSON using Newtonsoft Deserialize C#

I am trying to deserialize JSON file and want to assign to object ScanResult. var text showing all the values but scanresult showing null some null values. https://gyazo.com/ff2ce386f845394c458a88d43a1f30d8
please suggest if I am missing something.
//MY jSon File SCAN Test 1-1543045410222.json 's code
{
"at": 1543045410222,
"i": 1000,
"s": {
"Sensor1": ["OFF"],
"Sensor2": ["OFF"],
"DataReady1": ["OFF"],
"DataReady2": ["OFF"],
"CV1": [5.0],
"CV2": [6.0]
}
}
//ViewModel Code is as below:
public void ResendScanResult()
{
var ScanActivities = scanActivityManager.GetAll();
foreach (var item in ScanActivities)
{
var scanName = item.ScanName;
var dir = _dataFilePath + scanName + "\\";
var jsonFileName = string.Format("{0}{1}-{2}.json", dir, scanName, item.ScanDateEpoch);
string fileName = Path.GetFileName(jsonFileName);
// ScanResult scanResult = new ScanResult();
var text = File.ReadAllText(jsonFileName);
//var scanResults = JsonConvert.DeserializeObject<ScanResult>(text);
Common.Model.ScanResult scanResult = JsonConvert.DeserializeObject<Common.Model.ScanResult>(text);
var Mvm = MonitorViewModel.Instance;
// TargetProvider target = Mvm.GetTargetProvider(scanResult);
// Mvm.PublishToServer(target, scanResult);
}
}
and my scanRescult class code is as below :
namespace ABX.Common.Model
{
public class ScanResult
{
public ScanResult()
{
At = DateTimeOffset.Now.ToUnixTimeMilliseconds();
Interval = 1;
}
public string Name { get; set; }
public long At { get; set; }
public long Interval { get; set; }
public JObject Values { get; set; }
public string FileName { get; set; }
public JObject ToJson()
{
JObject json = new JObject
{
{ "at", At },
{ "i", Interval },
{ "s", Values }
};
return json;
}

Either rename your class properties to match your JSON, rename your JSON to match your class properties, or implement a custom JsonConverter, where you can implement arbitrary mapping.

Deserialising XML with different element name in c#

XML:
<?xml version="1.0" encoding="UTF-8"?>
<Images>
<I0>
<Path>123.com</Path>
<I0>
<I1>
<Path>123.com</Path>
<I1>
<I2>
<Path>123.com</Path>
<I2>
</Images>
Can serializer.Deserialize() be used to get tags with different names into a collection?
currently, in my object I have:
C#:
public class rootObject
{
[XmlElement(ElementName = "I0")]
public I0 I0 { get; set; }
[XmlElement(ElementName = "I1")]
public I1 I1 { get; set; }
[XmlElement(ElementName = "I2")]
public I2 I2 { get; set; }
}
But I would like to have (Because Images can have more or fewer elements):
public class rootObject
{
public List<I> Is { get; set; }
}

You can do what you are suggesting you just merely need to pass in the type argument in your class doing the generic. The key point to remember when you do a deserialization routine is that the routine needs to know the sub reference. So if I was to say string.Deserialize it would bomb. It would need to know a reference string.Deserialize> where Sub could be the class object that may change.
Say I have a base class and I want 'T' to be a type I can change for extensible abilities later.
[Serializable]
public class Test<T> where T : class
{
public Test() { }
public int TestId { get; set; }
public string Name { get; set; }
public List<T> Shipments { get; set; }
}
I want to test this with two classes I just make up that have different properties slightly
[Serializable]
public class Sub1
{
public int Id { get; set; }
public string Desc { get; set; }
}
[Serializable]
public class Sub2
{
public int IdWhatever { get; set; }
public string DescWhatever { get; set; }
}
Now let's do a main program and test serialization.
class Program
{
static void Main(string[] args)
{
var serializeTest = new Test<Sub1> { TestId = 1, Name = "Test", Shipments = new List<Sub1> { new Sub1 { Id = 1, Desc = "Test" }, new Sub1 { Id = 2, Desc = "Test2" } } };
var serializeTest2 = new Test<Sub2> { TestId = 1, Name = "Test", Shipments = new List<Sub2> { new Sub2 { IdWhatever = 1, DescWhatever = "Test" }, new Sub2 { IdWhatever = 2, DescWhatever = "Test2" } } };
var serialized = serializeTest.SerializeToXml();
var serialized2 = serializeTest2.SerializeToXml();
var deserialized = serialized.DeserializeXml<Test<Sub1>>();
var deserialized2 = serialized2.DeserializeXml<Test<Sub2>>();
Console.WriteLine(serialized);
Console.WriteLine();
Console.WriteLine(serialized2);
Console.ReadLine();
}
}
And my Serialize and DeSerialize extension methods:
public static string SerializeToXml<T>(this T valueToSerialize, string namespaceUsed = null)
{
var ns = new XmlSerializerNamespaces(new XmlQualifiedName[] { new XmlQualifiedName(string.Empty, (namespaceUsed != null) ? namespaceUsed : string.Empty) });
using (var sw = new StringWriter())
{
using (XmlWriter writer = XmlWriter.Create(sw, new XmlWriterSettings { OmitXmlDeclaration = true }))
{
dynamic xmler = new XmlSerializer(typeof(T));
xmler.Serialize(writer, valueToSerialize, ns);
}
return sw.ToString();
}
}
public static T DeserializeXml<T>(this string xmlToDeserialize)
{
dynamic serializer = new XmlSerializer(typeof(T));
using (TextReader reader = new StringReader(xmlToDeserialize))
{
return (T)serializer.Deserialize(reader);
}
}

You don't need to specify the XmlElement name when the properties match the XML. A few solutions, some kinda hacky :).
HACKY: use regex string replace to replace <I#> and </I#> to
just <I> and </I>
SOMEWHAT HACKY: This might work for you:
How to deserialize an XML array containing multiple types of elements in C#,
but you'd have to add an attribute for i0, i1 ... i100, etc.
BEST: Is that your entire XML? I'd honestly just use LINQToXml and
do a Descendants("Path") and get an array of strings back with 1 line of code. Serialization is not really the best solution for this.

Converting an array to object

I have 2 types of string: Mer and Spl
// Example
string testMer = "321|READY|MER";
string testSpl = "321|READY|SPL";
Then I will split them:
var splitMer = testMer.Split('|');
var splitSpl = testSpl.Split('|');
I have an object to save them
public class TestObject
{
public int id { get; set; }
public string status { get; set; }
public string type { get; set; }
}
Question: How to convert the Array into the TestObject?

var converted = new TestObject
{
id = int.Parse(splitMer[0]),
status = splitMer[1],
type = splitMer[2]
};
You will need to add some error checking.

var values = new List<string> { "321|READY|MER", "321|READY|SPL" };
var result = values.Select(x =>
{
var parts = x.Split(new [] {'|' },StringSplitOptions.RemoveEmptyEntries);
return new TestObject
{
id = Convert.ToInt32(parts[0]),
status = parts[1],
type = parts[2]
};
}).ToArray();
You just need to use object initializers and set your properties.By the way instead of storing each value into seperate variables, use a List.Then you can get your result with LINQ easily.

var splitMer = testMer.Split('|');
var testObj = new TestObject();
testObj.Id = Int32.Parse(splitMer[0]);
testObj.Status = splitMer[1];
testObj.type = splitMer[2];

How about adding a Constructor to your Class that takes a String as a Parameter. Something like this.
public class TestObject
{
public int id { get; set; }
public string status { get; set; }
public string type { get; set; }
public TestObject(string value)
{
var valueSplit = value.Split('|');
id = int.Parse(valueSplit[0]);
status = valueSplit[1];
type = valueSplit[2];
}
}
Usage:
TestObject tst1 = new TestObject(testMer);
TestObject tst2 = new TestObject(testSpl);

How to remove DataContractSerializer verbosity

We are attempting to serialize an object tree. And while we have been successful. I was hoping to find a way to simplify down the generated xml.
The objects look something like the following:
public class RuleSet<T>
{
public IEnumerable<IState<T>> States { get; set; }
public IEnumerable<ICondition<T>> Conditions { get; set; }
}
public class State<T> : IState<T>
{
public string Id { get; set; }
public List<ITransition<T>> Transitions { get; set; }
}
public class Transition<T> : ITransition<T>
{
public ICondition<T> Condition { get; set; }
public IState<T> Next { get; set; }
}
public class Condition<T> : ICondition<T>
{
public string Id { get; set; }
public string Name { get; set; }
}
We are using a really simple serialization code at the moment:
public void blah()
{
var condition1 = new Condition<object>() {
Id = "C1", AttributeName = "Foo", ExpectedValue = "Bar"
};
var condition2 = new Condition<object>() {
Id = "C2", AttributeName = "Bar", ExpectedValue = "Foo"
};
var state1Transitions = new List<ITransition<object>>();
var state2Transitions = new List<ITransition<object>>();
var state3Transitions = new List<ITransition<object>>();
var state = new State<object> {
Id = "S1", Transitions = state1Transitions
};
var state2 = new State<object> {
Id = "S2", Transitions = state2Transitions
};
var state3 = new State<object> {
Id = "S3", Transitions = state3Transitions
};
state1Transitions.Add(new Transition<object> {
Condition = condition1, Next = state2
});
state1Transitions.Add(new Transition<object> {
Condition = condition2, Next = state3
});
state2Transitions.Add(new Transition<object> {
Condition = condition2, Next = state3
});
var ruleSet = new RuleSet<object> {
States = new List<IState<object>> {state, state2, state3},
Conditions = new List<ICondition<object>>{condition1, condition2}
};
var stream1 = new MemoryStream();
var serializer = new DataContractSerializer(typeof(RuleSet<object>),
new List<Type> {
typeof(State<object>),
typeof(Transition<object>),
typeof(AttributeEqualTo<object>)
});
serializer.WriteObject(stream1, ruleSet);
stream1.Position = 0;
var xml = new StreamReader(stream1).ReadToEnd();
Console.WriteLine(xml);
}
When the XML is generated the output for each level is complete instead of only containing the reference to the object. Basically for each Transition<T> we get a complete object definition for each state and condition even if they are defined elsewhere.
Is there a way to get those to simply be references?

It all comes down to how you create your DataContractSerializer.
You'll want to call the overload of the constructor that allows you to indicate that you will preserve object references, with the following signature:
public DataContractSerializer(
Type type,
IEnumerable<Type> knownTypes,
int maxItemsInObjectGraph,
bool ignoreExtensionDataObject,
bool preserveObjectReferences,
IDataContractSurrogate dataContractSurrogate
)
You can pass default values for most of the parameters. In your case, the call to the DataContractSerializer constructor will look like this:
var serializer = new DataContractSerializer(typeof(RuleSet<object>),
new [] {
typeof(State<object>),
typeof(Transition<object>),
typeof(AttributeEqualTo<object>)
},
Int32.MaxValue,
false,
/* This is the important flag to set. */
true,
null
);
Note, from the preserveObjectReferences parameter documentation, it uses non-standard XML (emphasis mine):
preserveObjectReferences
Type: System.Boolean
true to use non-standard XML constructs to preserve object reference data; otherwise, false.
If you need other code outside of .NET to interpret this, then untangling the references might prove to be difficult (but shouldn't be impossible).
However, it prevents the object graph from replicating itself over and reduce the size of your XML (possibly considerably, given how deep your references go).

XML Deserialization

I have an xml file which is in this format
"<rundate>
<rundateItem>
<LeaveCreditingMonth>2</LeaveCreditingMonth>
<LeaveCreditingYear>2010</LeaveCreditingYear>
<IncludeNoTimesheet>True</IncludeNoTimesheet>
</rundateItem>
</rundate>"
in case i want to deserialize this xml file, what should be the format of the class or the target object of my deserialization?
Currently my class looks like this:
public class rundate
{
string _leaveCreditingMonth;
string _leaveCreditingYear;
string _includeNoTimesheet;
public string LeaveCreditingMonth {get{return _leaveCreditingMonth;}set{ _leaveCreditingMonth = value;}}
public string LeaveCreditingYear {get{return _leaveCreditingYear;}set{ _leaveCreditingYear = value;}}
public string IncludeNoTimesheet {get{return _includeNoTimesheet;}set{ _includeNoTimesheet = value;}}
}

Your class can stay as is (obviously you should change the data types to be appropriate though) - since you have rundate nested in your XML (which implies there can be more than one) I would suggest adding a collection class as follows:
[XmlRoot("rundate")]
public class RundateCollection
{
[XmlElement("rundateItem")]
public List<rundate> Rundates { get; set; }
}
You can test serializing/deserializing your class with your XML as follows:
XmlSerializer serializer = new XmlSerializer(typeof(RundateCollection));
StringWriter sw = new StringWriter();
rundate myRunDate = new rundate() { LeaveCreditingMonth = "A", IncludeNoTimesheet = "B", LeaveCreditingYear = "C" };
RundateCollection ra = new RundateCollection() { Rundates = new List<rundate>() { myRunDate } };
serializer.Serialize(sw, ra);
string xmlSerialized = sw.GetStringBuilder().ToString();
string xml = File.ReadAllText(#"test.xml");
StringReader sr = new StringReader(xml);
var rundateCollection = serializer.Deserialize(sr);
You will see that the collection class is successfully deserialized from your XML and contains one list item of type runlist.

I would design the class like so:
public class Rundate
{
public int LeaveCreditingMonth { get; set;}
public int LeaveCreditingYear { get; set; }
public bool IncludeNoTimesheet { get; set; }
}
Then you can deserialize it like this:
var serializer = new XmlSerializer(typeof(List<Rundate>));
using (var fs = new FileStream("yourfile.xml", FileMode.Open))
{
using (var reader = new XmlTextReader(fs))
{
var rundates = (List<Rundate>)serializer.Deserialize(reader);
}
}