/// <summary>
/// 本示例只介绍如何请求支付凭据（charge 对象），以及如何查询指定 charge 对象和 charge 列表，
/// 至于如何将 charge 对象传递给客户端需要接入者自行处理
/// </summary>
public static void Example(string appId)
{
Console.WriteLine("**** 创建签约示例 ****");
var param = new Dictionary <string, object> {
{ "app", appId },
{ "contract_no", randomStr(10) },
{ "channel", "qpay" },
{ "extra", new Dictionary <string, object> {
{ "display_account", "签约测试" }
} },
{ "metadata", new Dictionary <string, object> {
} }
};
var agreement = Agreement.Create(param);
Console.WriteLine(agreement);
Console.WriteLine();
Console.WriteLine("****查询 agreement 对象****");
Console.WriteLine(Agreement.Retrieve(agreement.Id));
Console.WriteLine();
Console.WriteLine("****解除签约 agreement 对象****");
Console.WriteLine(Agreement.Cancel(agreement.Id));
Console.WriteLine();
Console.WriteLine("****查询 agreement 列表****");
Dictionary <string, object> listParams = new Dictionary <string, object> {
{ "app", appId }, // 必填 签约使用的 app id
{ "per_page", 10 }, //限制有多少对象可以被返回，限制范围是从 1-100 项，默认是 10 项。
};
Console.WriteLine(Agreement.List(listParams));
}
