/// <summary>
 /// 新增用户报名信息
 /// </summary>
 public async Task <JsonResult> AddUserRegistration(UserRegistrationRequest request)
 {
     using (var client = new ActivityClient())
     {
         var result = (await client.AddUserRegistrationAsync(request)).Result;
         return(Json(result ? "" : "新增报名信息失败"));
     }
 }