xxcpzs/XXCpzs/ViewModels/SearchViewModel.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Input;
using Xamarin.Forms;
using XXCpzs.helper;
using XXCpzs.Models;
using XXCpzs.Services;
using XXCpzs.Views;

namespace XXCpzs.ViewModels
{
    class SearchViewModel : BaseViewModel
    {

        public ICommand PerformSearch => new Command<string>((string query) =>
        {
            SearchResults = CustomerDataService.GetSearchResults(query);
        });

        List<Customer> searchResults = CustomerDataService.Fruits;
        public List<Customer> SearchResults
        {
            get
            {
                return searchResults;
            }
            set
            {
                searchResults = value;
                OnPropertyChanged();
                //NotifyPropertyChanged();
            }
        }

        private int deviceId = 1;
        private PageCustomerSelect pageCustomerSelect;

        public SearchViewModel(int Uid, PageCustomerSelect pageCustomerSelect)  
        {
            this.pageCustomerSelect = pageCustomerSelect;
            Title = "客户选择";
            this.pageCustomerSelect = pageCustomerSelect;
            var dt = HttpHelper.RefreshData<Customer>(15,
                RestSharp.Method.POST,
                new Dictionary<string, string>{
                { "Uid", Uid.ToString() },
                { "deviceId", deviceId.ToString() }
            });
            if (dt != null)
            {
                foreach (var item in dt)
                {
                    CustomerDataService.Fruits.Add(item);
                }
            }
            MessagingCenter.Subscribe<PageAddCustomer, Customer>(this, "AddCustomer", async (obj, item) =>
            {
                var newItem = item as Customer;
                Console.WriteLine(">>>>>>>>>" + item.company);

                CustomerDataService.AddItem(newItem);
                pageCustomerSelect.Refresh();
            });

        }

    }
}