ASTM-D7896-19TransientHot-Wire-Method/ViewModels/ConfigViewModel.cs

using ASTM_D7896_Tester.Models;
using ASTM_D7896_Tester.Services;
using ASTM_D7896_Tester.Views;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using System;
using System.Threading.Tasks;
using System.Windows;
using static ASTM_D7896_Tester.Models.TestParameters;

namespace ASTM_D7896_Tester.ViewModels;

public partial class ConfigViewModel : ObservableObject
{
    [ObservableProperty]
    private float _pressureCoefficient;

    [ObservableProperty]
    private float _pressureProtection;

    [ObservableProperty]
    private float _temperatureCoefficient;

    [ObservableProperty]
    private float _resistanceCoefficient;

    private readonly IPlcService _plcService;
    private readonly AppConfig _coefficientAddresses;

    public ConfigViewModel()
    {
        // 从 App 静态属性获取 PLC 服务和系数寄存器地址
        _plcService = ASTM_D7896_Tester.App.PlcService;
        _coefficientAddresses = ASTM_D7896_Tester.App.PlcConfig;

        // 窗口打开时加载一次
        LoadFromPlc();
    }

    private async void LoadFromPlc()
    {
        try
        {
            PressureCoefficient = await _plcService.ReadFloatAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.PressureCoefficient);
            PressureProtection = await _plcService.ReadFloatAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.PressureProtection);
            TemperatureCoefficient = await _plcService.ReadFloatAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.TemperatureCoefficient);
            ResistanceCoefficient = await _plcService.ReadFloatAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.ResistanceCoefficient);
        }
        catch (Exception ex)
        {
            MessageBox.Show($"从 PLC 读取系数失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
        }
    }



    //public IAsyncRelayCommand SaveCommand => new AsyncRelayCommand(Save);


    [RelayCommand]
    private async Task Save()
    {
        try
        {
            // 写入 PLC（使用 WriteMultipleRegistersAsync，该方法支持 float）
            await _plcService.WriteMultipleRegistersAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.PressureCoefficient, PressureCoefficient);
            await _plcService.WriteMultipleRegistersAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.PressureProtection, PressureProtection);
            await _plcService.WriteMultipleRegistersAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.TemperatureCoefficient, TemperatureCoefficient);
            await _plcService.WriteMultipleRegistersAsync(_coefficientAddresses.TestParameters.CalibrationCoefficients.ResistanceCoefficient, ResistanceCoefficient);

            MessageBox.Show("系数已保存到 PLC。", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
            CloseWindow();
        }
        catch (Exception ex)
        {
            MessageBox.Show($"保存失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
        }
    }

    [RelayCommand]
    private void Cancel()
    {
        CloseWindow();
    }

    private void CloseWindow()
    {
        Application.Current.Windows.OfType<ConfigWindow>().FirstOrDefault()?.Close();
    }
}