c＃WPF-在DataGrid中添加總計行

Question

我有這個DataGrid：

我想在DataGrid的底部添加一行，該行包含Name：Total和Price：所有價格的總和。 如果有可能，該行將被凍結。 你有什么想法？ 簡單的項目在此鏈接中： 此處

編輯1這是XAML代碼：

<DataGrid ItemsSource="{Binding Articles}" AutoGenerateColumns="False" HorizontalAlignment="Left" CanUserAddRows="False" IsReadOnly="True">
        <DataGrid.Columns>
            <DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
            <DataGridTextColumn Header="Price" Binding="{Binding Price}" />               
        </DataGrid.Columns>
    </DataGrid>

這是ViewModel：

[Export(typeof(IShell))]
public class MainViewModel : Screen
{
    public System.ComponentModel.ICollectionView Articles { get; set; }

    public MainViewModel()
    {
        Articles = CollectionViewSource.GetDefaultView(GetArticles());
    }


    private List<Article> GetArticles()
    {
        List<Article> arts = new List<Article>();

        arts.Add(new Article { Name = "Name1", Price = 2.80 });
        arts.Add(new Article { Name = "Name2", Price = 1.25 });
        arts.Add(new Article { Name = "Name3", Price = 9.32 });
        arts.Add(new Article { Name = "Name4", Price = 1.31 });
        arts.Add(new Article { Name = "Name5", Price = 0.80});
        arts.Add(new Article { Name = "Name6", Price = 2.50});
        arts.Add(new Article { Name = "Name7", Price = 0.50 });

        return arts;
    }

}

Answer 1

您可以在數據網格下方添加一個文本塊，然后將其綁定到具有總價的屬性，而不是在數據網格中添加最后一行。

Answer 2

這應該是有幫助的。我只添加了一個新行，並帶有求和方法

private List<Article> GetArticles()
    {
        List<Article> arts = new List<Article>();

        arts.Add(new Article { Name = "Name1", Price = 2.80 });
        arts.Add(new Article { Name = "Name2", Price = 1.25 });
        arts.Add(new Article { Name = "Name3", Price = 9.32 });
        arts.Add(new Article { Name = "Name4", Price = 1.31 });
        arts.Add(new Article { Name = "Name5", Price = 0.80 });
        arts.Add(new Article { Name = "Name6", Price = 2.50 });
        arts.Add(new Article { Name = "Name7", Price = 0.50 });
        arts.Add(new Article {Name = "Total", Price = GetTotal(arts)});
        return arts;
    }

    private double GetTotal(List<Article> arts)
    {
        double Total = 0;
        foreach (Article art in arts)
        {
            Total += double.Parse(art.Price.ToString());
        }
        return Total;
    }

問候

Answer 3

多一個：

private List<Article> GetArticles()
    {
        List<Article> arts = new List<Article>();

        arts.Add(new Article { Name = "Name1", Price = 2.80 });
        arts.Add(new Article { Name = "Name2", Price = 1.25 });
        arts.Add(new Article { Name = "Name3", Price = 9.32 });
        arts.Add(new Article { Name = "Name4", Price = 1.31 });
        arts.Add(new Article { Name = "Name5", Price = 0.80 });
        arts.Add(new Article { Name = "Name6", Price = 2.50 });
        arts.Add(new Article { Name = "Name7", Price = 0.50 });
        arts.Add(new Article { Name = "Total", Price = arts.Sum(l => l.Price)});
        return arts;
    }