protected void btnStoreNewUser_Click(object sender, EventArgs e) { litStoreNewUserResult.Text = litStoreNewUserError.Text = ""; try { long userIdResult; var responseStatus = client.StoreNewUser(out userIdResult, txtStoreNewUserEmail.Text, txtStoreNewUserPassword.Text, txtStoreNewUserUsername.Text); if (responseStatus.ErrorCode != null) { litStoreNewUserError.Text = responseStatus.ErrorCode.ToEnglish(); return; } litStoreNewUserResult.Text = "New User Id: " + userIdResult; var userIds = new List <string>(txtGetUsersUserIds.Text.Split(',')) { userIdResult.ToString() }.Where(x => !string.IsNullOrEmpty(x.Trim())); txtGetUsersUserIds.Text = string.Join(",", userIds.ToArray()); } catch (Exception ex) { litStoreNewUserError.Text = ex.Message; } }