Asynchronous calls to betfair Exchange APIs

[Exchange_API]

How I can make asynchronous calls to betfair Exchange APIs using "async...await" of .net framework? Any example of this will be really good.

[doctormike]

Here is an example I use in an app. Not sure if this is exactly what you are after. I should say I did this a bit trial and error but it is simple and works well for me.

Async Sub rollem()
        Dim markId As String
        Do
            If count > 0 Then
                bStart.Text = "START"
                bStart.BackColor = Color.Lime
                Exit Sub
            End If
            If Statecount = 0 Then
                newindex = FindIndex(lbRaces.SelectedIndex)
            End If
            lbRaces.SelectedIndex = check(newindex)
            markId = RaceArray(check(newindex)).Split("~").GetValue(0)
            Await GetInfo(markId)  ‘This calls GetInfo asynchronously
            getinfoalert = 0
            Statecount2 += 1
            RaiseEvent StopLoop(blnCancel)
            If blnCancel Then Exit Sub
            tbCseTime.Text = lbRaces.SelectedItem
            
            If newindex < check.Length Then
                newindex += 1
            End If
            If newindex = check.Length Then
                lbNears.Items.Clear()
                newindex = 0
            End If
            Statecount = 1
        Loop
    End Sub

Async Function GetInfo(ByVal marketId As String) As Task
        attempts = 0
        Dim ListMarketBookResponse As Object = Nothing
        Dim strRequest As String = ""
        Dim strMarketBook As String = ""

Repeat:
        Try
            strRequest = "{""jsonrpc"": ""2.0"", ""method"": ""SportsAPING/v1.0/listMarketBook"", ""params"": {""marketIds"":[""" & marketId & """],""priceProjection"":{""priceData"":[""EX_BEST_OFFERS""],""virtualise"":""true"",""exBestOffersOverrides"":{""bestPricesDepth"":1}}}, ""id"": 1}"
            ListMarketBookResponse = CreateRequest(strKey, strSessTok, strRequest)
            ListBox2.Items.Clear()
            strMarketBook = ListMarketBookResponse.ToString
‘ Lots of other code here I’ve omitted
Catch
            attempts += 1
            If attempts < TextBox3.Text Then
                GoTo Repeat
            Else
                Exit Function
            End If
        End Try
           Await Task_MethodAsync()  ‘This simply calls a small delay – could call anything, but all async subs/functions must have an accompanying await contained therein
    End Function

Much of the above is specific to my app. Main thing is, observe where the async and await occur. Hope this helps.
Mike