/// <summary>
/// 返回角色，根据代理ID(Json)
/// By xzz
/// 2010-8-31 23:56
/// </summary>
/// <param name="agentId">代理ID</param>
/// <returns></returns>
public string GetRoles(string agentId)
{
RoleService roleService = new RoleService();
return(ObjectToJson.ObjectListToJson(roleService.GetRoleByAgentId(agentId)));
}