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货架标准上位机/ViewModels/DataChartViewModel.cs

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+using HandyControl.Controls;
+using LiveCharts;
+using Ping9719.WpfEx.Mvvm;
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Input;
+
+namespace 货架标准上位机.ViewModel
+{
+    public class DataChartViewModel : BindableBase
+    {
+        #region 加载
+        private bool isLoad;
+        public bool IsLoad { get => isLoad; set { SetProperty(ref isLoad, value); } }
+        #endregion
+
+        #region 日期
+        private List<int> year = new List<int>();
+        /// <summary>
+        /// 年
+        /// </summary>
+        public List<int> Year { get => year; set { SetProperty(ref year, value); } }
+
+        private List<int> month = new List<int>();
+        /// <summary>
+        /// 月
+        /// </summary>
+        public List<int> Month { get => month; set { SetProperty(ref month, value); } }
+
+        private int yearIndex;
+        /// <summary>
+        /// 年索引
+        /// </summary>
+        public int YearIndex { get => yearIndex; set { SetProperty(ref yearIndex, value); UpdataMonth(); } }
+
+        private int monthIndex;
+        /// <summary>
+        /// 月索引
+        /// </summary>
+        public int MonthIndex { get => monthIndex; set { SetProperty(ref monthIndex, value); StatChart(); } }
+        #endregion
+
+        #region 图表
+        public ChartValues<int> ChartValues1 { get; set; } = new ChartValues<int>();
+        public ChartValues<int> ChartValues2 { get; set; } = new ChartValues<int>();
+        public ChartValues<int> ChartValues3 { get; set; } = new ChartValues<int>();
+        public Func<double, string> LabelFormatterX { get; set; } = value => $"{value}号";
+        public Func<double, string> LabelFormatterY { get; set; } = value => $"{value}个";
+
+        private IList<string> chartLabelsX;
+        /// <summary>
+        /// X轴轴信息
+        /// </summary>
+        public IList<string> ChartLabelsX { get => chartLabelsX; set { SetProperty(ref chartLabelsX, value); } }
+
+        #endregion
+
+        #region 方法
+        /// <summary>
+        /// 更新年
+        /// </summary>
+        public async void UpdataYear()
+        {
+            try
+            {
+                IsLoad = true;
+                Year = await DataDb.db.Queryable<MyTestTable>()
+                    .GroupBy(o => o.Time.Year)
+                    .OrderByDescending(o => o.Time.Year)
+                    .Select(o => o.Time.Year)
+                    .ToListAsync();
+            }
+            catch (Exception ex)
+            {
+                Year = new List<int>();
+                Growl.Error("刷新数据失败：" + ex.Message);
+            }
+            finally
+            {
+                YearIndex = Year.Any() ? 0 : -1;
+            }
+        }
+
+        /// <summary>
+        /// 更新月
+        /// </summary>
+        public async void UpdataMonth()
+        {
+            try
+            {
+                IsLoad = true;
+                if (!Year.Any() || YearIndex < 0)
+                    return;
+
+                var dt1 = new DateTime(Year[YearIndex], 1, 1);
+                var dt2 = dt1.AddYears(1);
+                Month = await DataDb.db.Queryable<MyTestTable>()
+                    .Where(o => o.Time > dt1 && o.Time < dt2)
+                    .GroupBy(o => o.Time.Month)
+                    .OrderBy(o => o.Time.Month)
+                    .Select(o => o.Time.Month)
+                    .ToListAsync();
+            }
+            catch (Exception ex)
+            {
+                Month = new List<int>();
+                Growl.Error("刷新数据失败：" + ex.Message);
+            }
+            finally
+            {
+                MonthIndex = Month.Any() ? Month.Count - 1 : -1;
+            }
+        }
+
+        public ICommand ButStatChartCommand { get => new DelegateCommand(ButStatChart); }
+        /// <summary>
+        /// 点击刷新
+        /// </summary>
+        public void ButStatChart()
+        {
+            if (IsLoad)
+            {
+                Growl.Info("有任务正在进行");
+                return;
+            }
+
+            if (!Year.Any() || !Month.Any() || YearIndex < 0 || MonthIndex < 0)
+            {
+                Growl.Info("没有选择年份或月份");
+                return;
+            }
+
+            StatChart();
+        }
+
+        /// <summary>
+        /// 刷新统计信息
+        /// </summary>
+        public async void StatChart()
+        {
+            try
+            {
+                if (!Year.Any() || !Month.Any() || YearIndex < 0 || MonthIndex < 0)
+                {
+                    ChartValues1.Clear();
+                    ChartValues2.Clear();
+                    ChartValues3.Clear();
+                    return;
+                }
+
+                IsLoad = true;
+                await Task.Delay(200);
+
+                var year = Year[YearIndex];
+                var month = Month[MonthIndex];
+
+                var dt1 = new DateTime(year, month, 1);
+                var dt2 = dt1.AddMonths(1);
+
+                //从数据库中查询、统计数量
+                var dbdata = await DataDb.db.Queryable<MyTestTable>()
+                .Where(o => o.Time > dt1 && o.Time < dt2)
+                .GroupBy(o => o.Time.Day)
+                .Select(o => new
+                {
+                    day = o.Time.Day,
+                    count = SqlFunc.AggregateCount(o.Id),
+                    okCount = SqlFunc.AggregateCount(o.Status == "合格" ? "" : null),
+                    notCount = SqlFunc.AggregateCount(o.Status != "合格" ? "" : null),
+                })
+                .OrderBy(o => o.day)
+                .ToListAsync();
+
+                ChartLabelsX = dbdata.Select(o => o.day.ToString()).ToList();
+
+                ChartValues1.Clear();
+                ChartValues2.Clear();
+                ChartValues3.Clear();
+
+                ChartValues1.AddRange(dbdata.Select(o => o.count));
+                ChartValues2.AddRange(dbdata.Select(o => o.okCount));
+                ChartValues3.AddRange(dbdata.Select(o => o.notCount));
+            }
+            catch (Exception ex)
+            {
+                Growl.Error("刷新数据失败：" + ex.Message);
+            }
+            finally
+            {
+                IsLoad = false;
+            }
+        }
+        #endregion
+    }
+}