Filestream and receive the data from the read - asp.net

Question

Reading an JSON document "source.json" thru filestream but how do you get the data from the json file? After that I am trying to append the newly edited json data back on the same file.
Dim pathSource As String = "Server.MapPath('~/source.json')"
Try
Using fs As FileStream = New FileStream(pathSource, _
FileMode.Open, FileAccess.Read)
Dim bytes() As Byte = New Byte((fsSource.Length) - 1) {}
Dim numBytesToRead As Integer = CType(fsSource.Length,Integer)
Dim numBytesRead As Integer = 0
While (numBytesToRead > 0)
Dim n As Integer = fsSource.Read(bytes, numBytesRead, _
numBytesToRead)
If (n = 0) Then
Exit While
End If
numBytesRead = (numBytesRead + n)
numBytesToRead = (numBytesToRead - n)
End While
numBytesToRead = bytes.Length
Dim xmlBuilder = New StringBuilder()
fs.Seek(0, SeekOrigin.Begin)
Dim ms As New MemoryStream()
fs.CopyTo(ms)
xmlBuilder.Append(Encoding.UTF8.GetString(ms.ToArray()))
ms.Flush()
ms.Close()
'???How to access the data from the file "source.json" you just read in???
'Edit the file "source.json" data
?? How to put it into "bytesout" the edited data???
Using fsAppend As FileStream = New FileStream(pathSource, _
FileMode.Append, FileAccess.Write)
fsAppend.Write(bytesout, 0, numBytesToRead)
End Using
End Using
Catch ioEx As FileNotFoundException
Console.WriteLine(ioEx.Message)
End Try

Answer 1

I've been down that path. Try to figure out what you did wrong with newtonsoft. The serializer and deserializer methods are fairly easy to use. You only have to create an object per the Json format and deserializer will populate the object automatically. You just have to have the variables in the class be declared as public property nameofjsonobject as