You could use JavaScriptSerializer
which is in System.Web.Script.Serialization
.
Imports System.Web.Script.Serialization
Module Module1
Sub Main()
Dim s As String
Try
Dim rawresp As String = "{""id"":174543706,""first_name"":""Hamed"",""last_name"":""Ap"",""username"":""hamed_ap"",""type"":""private""}"
Dim jss As New JavaScriptSerializer()
Dim dict As Dictionary(Of String, String) = jss.Deserialize(Of Dictionary(Of String, String))(rawresp)
s = dict("id")
Catch ex As Exception
End Try
End Sub
End Module