我正在尝试连接到 AX Web 服务。在给定产品和客户的情况下，我会怎么做才能获得合适的价格。
我意识到要使用的正确 Web 服务是 PriceListServiceClient，我可以使用 Windows 身份验证登录它，但我无法从中检索任何数据。
这是我的代码：
PriceListServiceClient priceListServiceClient = new PriceListServiceClient();
priceListServiceClient.ClientCredentials.Windows.ClientCredential.UserName = "yyy";
priceListServiceClient.ClientCredentials.Windows.ClientCredential.Password = "zzz!";
priceListServiceClient.ClientCredentials.Windows.ClientCredential.Domain = "xxx";
CriteriaElement[] criteriaElement = new CriteriaElement[1];
criteriaElement[0] = new CriteriaElement();
criteriaElement[0].DataSourceName = "SalesPrice";
criteriaElement[0].FieldName = "ItemId";
criteriaElement[0].Operator = Operator.NotEqual;
criteriaElement[0].Value1 = "5637153175";
QueryCriteria queryCriteria = new QueryCriteria();
queryCriteria.CriteriaElement = criteriaElement;
CallContext callContext = new CallContext();
var found = priceListServiceClient.find(callContext, queryCriteria);
Console.WriteLine(found.Currency);
priceListServiceClient.Close();
知道为什么会这样吗？