41 lines
1.1 KiB
C#
41 lines
1.1 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Data;
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using DM_Weight.Models;
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namespace DM_Weight.Converter
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{
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public class GroupSumConverter : IValueConverter
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{
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#region 分组组内求和
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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var total = 0;
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// DataGrid分组后对应的组及组内元素CollectionViewGroup.Items 类型是ReadOnlyObservableCollection<object>
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if (value is ReadOnlyObservableCollection<object> items)
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{
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foreach (var item in items)
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{
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var de = item as OrderDetail;
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total += de.Quantity;
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}
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}
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return "用药总数：" + total;
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}
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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throw new NotImplementedException();
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}
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#endregion
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}
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}
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