Class for Deserializing JSON Navigation Menu response

[ahn]

Hi,

Is any code available for deserializing the JSON Navigation Menu response? Trying to create a class for deserializing the response is very tricky because the expected child class is not fixed at every nested point. For example, an Event Type might have as a child a GROUP and/or an EVENT and/or a RACE.

Thanking you in advance,

Panos Kourtesis

[jabe]

I tried this last year. Someone suggested improvements (on the forum somewhere, perhaps in the very long VB.NET thread under Exchange API), but at the time I was using a Javascript function to convert between JSON and .NET class, and even though I downloaded the navigation file, the conversion never worked. Perhaps it couldn't handle the amount of data, which was typically 4-5MB.

I changed to using the NewtonSoft converter, but I haven't tried it with the navigation file because the navigation file wasn't needed for my program.

These are the classes I had, but I've no idea whether they'll work for you.

 Class NavRoot
        Dim children() As NavItem
        Dim type As String
        Dim name As String
        Dim id As String
    End Class
    Class NavItem
        Dim children() As NavItem
        Dim type As String
        Dim name As String
        Dim id As String
        Dim exchangeId As String
        Dim countryCode As String
        Dim venue As String
        Dim marketType As String
        Dim marketStartTime As String
        Dim startTime As String
        Dim numberOfWinners As String
    End Class

I'm not at all convinced that children() will always be NavItem. I had tried just defining them as Object.

[ahn]

I tried this last year. Someone suggested improvements (on the forum somewhere, perhaps in the very long VB.NET thread under Exchange API), but at the time I was using a Javascript function to convert between JSON and .NET class, and even though I downloaded the navigation file, the conversion never worked. Perhaps it couldn't handle the amount of data, which was typically 4-5MB.

I changed to using the NewtonSoft converter, but I haven't tried it with the navigation file because the navigation file wasn't needed for my program.

These are the classes I had, but I've no idea whether they'll work for you.

 Class NavRoot
        Dim children() As NavItem
        Dim type As String
        Dim name As String
        Dim id As String
    End Class
    Class NavItem
        Dim children() As NavItem
        Dim type As String
        Dim name As String
        Dim id As String
        Dim exchangeId As String
        Dim countryCode As String
        Dim venue As String
        Dim marketType As String
        Dim marketStartTime As String
        Dim startTime As String
        Dim numberOfWinners As String
    End Class

I'm not at all convinced that children() will always be NavItem. I had tried just defining them as Object.

Unfortunatelly it does not work. In Api v6 we had the parentId field and we could populate the menu treeview on demand, instead of getting the whole universe of events and markets. Instead of calling the menu.json end point is there another way of creating a menu tree view?

[jabe]

One for the Betfair people. As I said, I downloaded the data but couldn't turn it into usable data. Perhaps someone else succeeded.