Exclude property of Class Object from Serialization

Exclude property of Class Object from Serialization
 
Json.NET has the ability to conditionally serialize properties by placing a ShouldSerialize method on a class. This functionality is similar to the
XmlSerializer ShouldSerialize feature.
  
ShouldSerialize
To conditionally serialize a property, add a method that returns boolean with the same name as the property and then prefix the method name
with ShouldSerialize. The result of the method determines whether the property is serialized. If the method returns true then the property will be
serialized, if it returns false then the property will be skipped.
  
Live Code
We need to exclude hsn and Doc_issue when they are nothing in runtime (Same is done Nothing when not to be Serialized)
 
Public Structure Json_Parent
        Public Property gstin As String
        Public Property fp As String
         Public Property version As String
        Public Property hash As String
        Public Property b2b As List(Of b2b)
         Public Property hsn As hsn
        Public Property doc_issue As doc_issue
        Public Property exp As List(Of exp)
  
     '' Make sure this is Function and WORD  [ShouldSerialize] Followed by Name of Property which is to be Excluded from serialization

        Public Function ShouldSerializehsn() As Boolean
            If IsNothing(hsn.data) = True Then
                Return False
            Else
                Return True
            End If
        End Function

 
        Public Function ShouldSerializedoc_issue() As Boolean
            If IsNothing(doc_issue.doc_det) = True Then
                Return False
            Else
                Return True
            End If
        End Function
 
    End Structure
 
 
While using the Object of structure the hsn and doc_issue will not be shown if data is not available
 
ParentJson.gstin = CompanyGSTinNo
ParentJson.fp = Format(FromDate, "MMyyyy")
ParentJson.version = "GST2.4"
ParentJson.hash = "hash"
ParentJson.hsn = Nothing
ParentJson.doc_issue = Nothing