The GetCustomerPurchaseIdAsync method always returns an empty value

Leo 0

Hi everybody.

Help solve the problem. The GetCustomerPurchseIdAsync(String service Ticket, String publisher UserId) method returns an empty value. The input parameters are correct. The documentation did not help, it is impossible to find out the cause of the error.

Karen Payne MVP 35,401 Reputation points

2023-09-17T11:22:43.1733333+00:00

You will need to provide specific details and perhaps a small code sample and what documentation are you referring too?
Leo 0 Reputation points

2023-09-18T08:53:22.82+00:00

I used the documentation https://learn.microsoft.com/en-us/uwp/api/windows.services.store.storecontext.getcustomerpurchaseidasync?view=winrt-19041

Leo 0

And I can provide a piece of code

    public async Task<string> GetTokenFromAzureOAuthAsync()
    {
		...

        var appIdUri = "https://onestore.microsoft.com/b2b/keys/create/purchase";

        var content = new FormUrlEncodedContent(new[]
        {
            new KeyValuePair<string, string>("grant_type", "client_credentials"),
            new KeyValuePair<string, string>("client_id", clientId),
            new KeyValuePair<string, string>("client_secret", clientSecret),
            new KeyValuePair<string, string>("resource", appIdUri),
        });

        using var client = new HttpClient();
        var response = await client.PostAsync($"https://login.microsoftonline.com/{tenantId}/oauth2/token", content));
        var data = await response.Content.ReadAsStreamAsync(CancellationToken.None);

        if (data == null)
        {
            throw new NullReferenceException(nameof(data));
        }

        var jsonOptions = new JsonSerializerOptions()
        {
            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
            DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
            WriteIndented = true
        };

        var result = await JsonSerializer.DeserializeAsync<MsTokenResponse>(data, jsonOptions, CancellationToken.None);

        return result?.PurchaseToken ?? throw new Exception("wrong response");
    }

...

var token = await GetTokenFromAzureOAuthAsync();
var purchaseId = await _storeContext.GetCustomerPurchaseIdAsync(token, "no"); //return string.Empty

Junjie Zhu - MSFT 17,386 Reputation points Microsoft Vendor

2023-09-20T03:42:05.9866667+00:00

Hi @Leo ,

Can you get the correct purchaseId using this official example?
Leo 0 Reputation points

2023-09-20T07:18:40.27+00:00

Hi @Junjie Zhu - MSFT ,

I get the same result using this example code
Junjie Zhu - MSFT 17,386 Reputation points Microsoft Vendor

2023-09-21T08:17:01.4566667+00:00

Hi @Leo ,

For your scenario, please open a free support ticket here: Contact Us. Go to Contact us tab , find Non-Technical Support - Dashboard and choose SUBMIT AN INCIDENT. You could talk to the store team directly and confirm this behavior. The store team could check the status of your account in the back end.

Share via

The GetCustomerPurchaseIdAsync method always returns an empty value

Your answer