Question

我有一个简单的列表视图，其中显示了一些与按小时进行投资相对应的指标。我需要冻结最后一行并包含其值的每个总和

这是我正在使用的代码：

MainWindow.xaml：

<Window x:Class="WpfTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfTest"
    mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
    <Window.Resources>
        <CollectionViewSource x:Key="ItemCollectionViewSource" CollectionViewType="ListCollectionView"/>
    </Window.Resources>
    <Grid>
        <ListView ItemsSource="{Binding Source={StaticResource ItemCollectionViewSource}}"
                  ScrollViewer.HorizontalScrollBarVisibility="Visible"
                  ScrollViewer.VerticalScrollBarVisibility="Visible">
            <ListView.View>
                <GridView>
                    <GridViewColumn Width="80" Header="id customer" DisplayMemberBinding="{Binding id}"/>
                    <GridViewColumn Width="60" Header="00 - 03 h" DisplayMemberBinding="{Binding qty_00}"/>
                    <GridViewColumn Width="60" Header="03 - 06 h" DisplayMemberBinding="{Binding qty_03}" />
                    <GridViewColumn Width="60" Header="06 - 09 h" DisplayMemberBinding="{Binding qty_06}" />
                    <GridViewColumn Width="60" Header="09 - 12 h" DisplayMemberBinding="{Binding qty_09}" />
                    <GridViewColumn Width="60" Header="12 - 15 h" DisplayMemberBinding="{Binding qty_12}" />
                    <GridViewColumn Width="60" Header="15 - 18 h" DisplayMemberBinding="{Binding qty_15}" />
                    <GridViewColumn Width="60" Header="18 - 21 h" DisplayMemberBinding="{Binding qty_18}" />
                    <GridViewColumn Width="60" Header="21 - 24 h" DisplayMemberBinding="{Binding qty_21}" />
                    <GridViewColumn Width="60" Header="Total by Id" DisplayMemberBinding="{Binding totalById}" />
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>
</Window>

这是我的Invest.cs类

public class Invest
    {
        public string id { get; set; }
        public decimal qty_00 { get; set; }
        public decimal qty_03 { get; set; }
        public decimal qty_06 { get; set; }
        public decimal qty_09 { get; set; }
        public decimal qty_12 { get; set; }
        public decimal qty_15 { get; set; }
        public decimal qty_18 { get; set; }
        public decimal qty_21 { get; set; }
        public decimal totalById { get; set; }
    }

及其背后的代码：

public partial class MainWindow : Window
    {
        private List<Invest> investList;
        public MainWindow()
        {
            InitializeComponent();
            GetData();
            CalculateTotalsById();
        }
        private void GetData()
        {
            investList = new List<Invest>();
            investList.Add(new Invest() { id = "01", qty_00 = 14m, qty_03 = 10m, qty_06 = 12, qty_09 = 0 });
            investList.Add(new Invest() { id = "02", qty_15 = 25m, qty_18 = 15m, qty_12 = 21 });
            investList.Add(new Invest() { id = "03", qty_00 = 20m, qty_03 = 5m, qty_09 = 30 });
            investList.Add(new Invest() { id = "04", qty_18 = 15m, qty_21 = 5m });
        }
        private void CalculateTotalsById()
        {
            foreach (Invest item in investList)
            {
                item.totalById = investList
                    .Where(x => x.id == item.id)
                    .Sum(x => x.qty_00 + x.qty_03 + x.qty_06 + x.qty_09 + x.qty_12 + x.qty_15 + x.qty_18 + x.qty_21)
                    ;
            }
        }
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            CollectionViewSource itemCollectionViewSource;
            itemCollectionViewSource = (CollectionViewSource)(FindResource("ItemCollectionViewSource"));
            itemCollectionViewSource.Source = investList;
        }
    }

我目前正在获取最后一列的总计，但我需要最后一行，每一行都有总计。可以将那列冻结吗？

我知道下一步是使用任何模板，但是我完全不知道模板逻辑。

Answer 1

我不完全理解你所说的冻结。

以下是DataGrid的示例（您编写了ListView或DataGrid）：

请注意只读的“按ID总计”列 Xaml：

<DataGrid ItemsSource="{Binding Source={StaticResource ItemCollectionViewSource}}" AutoGenerateColumns="False"
              ScrollViewer.HorizontalScrollBarVisibility="Visible"
              ScrollViewer.VerticalScrollBarVisibility="Visible">
        <DataGrid.Columns>
            <DataGridTemplateColumn  Width="60" Header="id customer" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding id}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

            <DataGridTemplateColumn  Width="60" Header="00 - 03 h" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_00}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn  Width="60" Header="03 - 06 h" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_03}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60" Header="06 - 09 h">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_06}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60" Header="09 - 12 h">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_09}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60" Header="12 - 15 h" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_12}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60" Header="15 - 18 h" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_15}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60" Header="18 - 21 h" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_18}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60" Header="21 - 24 h">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding qty_21}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Width="60"  IsReadOnly="True" Header="Total by Id">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Label Content="{Binding totalById}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
        </DataGrid.Columns>
    </DataGrid>

我还更改了DTO类，以支持该行的自动递增：

    public class Invest
{
    public string id { get; set; }
    public decimal qty_00 { get; set; }
    public decimal qty_03 { get; set; }
    public decimal qty_06 { get; set; }
    public decimal qty_09 { get; set; }
    public decimal qty_12 { get; set; }
    public decimal qty_15 { get; set; }
    public decimal qty_18 { get; set; }
    public decimal qty_21 { get; set; }
    public decimal totalById
    {
        get
        {
            return qty_00 + qty_03 + qty_06 + qty_09 + qty_12 + qty_15 + qty_18 + qty_21;
        }

    }
}

希望对您有所帮助：）

每列中的Listview（或Datagrid）冻结累加器

1 个答案: