Comment optimiser le code pour datagrid

Question

Je voudrais répéter ce design dans mon application.

j'ai écrit ce code.

public class CellViewModel 
{ 
    public string Background { get; set; } 

    public string FontWeight { get; set; } 

    public string Foreground { get; set; } 

    public string Value { get; set; } 
} 

ViewModel pour DataGridCell

---

public class PerformanceItemViewModel 
{ 
    public CellViewModel Title { get; set; } 

    public CellViewModel AllTrades { get; set; } 

    public CellViewModel LongTrades { get; set; } 

    public CellViewModel ShortTrades { get; set; } 

    public CellViewModel BuyAndHold { get; set; } 
} 

---

public class PerformanceViewModel 
{ 
    public PerformanceViewModel() 
    { 
     this.Items = new ObservableCollection<PerformanceItemViewModel> 
      { 
       new PerformanceItemViewModel 
        { 
         Title = new CellViewModel { Value = "Net Profit", FontWeight = "Bold", Foreground = "Black", Background = "White" }, 
         AllTrades = new CellViewModel { Value = "-683,84", FontWeight = "Normal", Foreground = "Red", Background = "White" }, 
         LongTrades = new CellViewModel { Value = "-683,84", FontWeight = "Normal", Foreground = "Red", Background = "White" }, 
         ShortTrades = new CellViewModel { Value = "0,00", FontWeight = "Normal", Foreground = "Black", Background = "White" }, 
         BuyAndHold = new CellViewModel { Value = "-2010,00", FontWeight = "Normal", Foreground = "Red", Background = "White" } 
        } 
      }; 
    } 

    public ObservableCollection<PerformanceItemViewModel> Items { get; set; } 
} 

Je voudrais optimiser ce code.

Le problème principal est de savoir comment informer DataGrid à propos de Background, FontWeight, Foreground?

---

<Grid> 
    <datagrid:ThemedDataGrid AlternatingRowBackground="{Binding Background}" 
          AutoGenerateColumns="False" 
          GridLinesVisibility="None" 
          HeadersVisibility="Column" 
          IsHitTestVisible="False" 
          IsReadOnly="True" 
          ItemsSource="{Binding Performance.Items}"> 

     <datagrid:ThemedDataGrid.CellStyle> 
      <Style TargetType="DataGridCell"> 
       <Setter Property="BorderThickness" Value="0" /> 
      </Style> 
     </datagrid:ThemedDataGrid.CellStyle> 

     <datagrid:ThemedDataGrid.Columns> 
      <DataGridTextColumn Binding="{Binding Path=Title.Value}"> 
       <DataGridTextColumn.CellStyle> 
        <Style TargetType="DataGridCell"> 
         <Setter Property="Background" Value="{Binding Path=Title.Background}" /> 
         <Setter Property="FontWeight" Value="{Binding Path=Title.FontWeight}" /> 
         <Setter Property="Foreground" Value="{Binding Path=Title.Foreground}" /> 
        </Style> 
       </DataGridTextColumn.CellStyle> 
      </DataGridTextColumn> 
      <DataGridTextColumn Header="All Trades" Binding="{Binding Path=AllTrades.Value}"> 
       <DataGridTextColumn.CellStyle> 
        <Style TargetType="DataGridCell"> 
         <Setter Property="Background" Value="{Binding Path=AllTrades.Background}" /> 
         <Setter Property="FontWeight" Value="{Binding Path=AllTrades.FontWeight}" /> 
         <Setter Property="Foreground" Value="{Binding Path=AllTrades.Foreground}" /> 
        </Style> 
       </DataGridTextColumn.CellStyle> 
      </DataGridTextColumn> 
      <DataGridTextColumn Header="Long Trades" Binding="{Binding Path=LongTrades.Value}"> 
       <DataGridTextColumn.CellStyle> 
        <Style TargetType="DataGridCell"> 
         <Setter Property="Background" Value="{Binding Path=LongTrades.Background}" /> 
         <Setter Property="FontWeight" Value="{Binding Path=LongTrades.FontWeight}" /> 
         <Setter Property="Foreground" Value="{Binding Path=LongTrades.Foreground}" /> 
        </Style> 
       </DataGridTextColumn.CellStyle> 
      </DataGridTextColumn> 
      <DataGridTextColumn Header="Short Trades" Binding="{Binding Path=ShortTrades.Value}"> 
       <DataGridTextColumn.CellStyle> 
        <Style TargetType="DataGridCell"> 
         <Setter Property="Background" Value="{Binding Path=ShortTrades.Background}" /> 
         <Setter Property="FontWeight" Value="{Binding Path=ShortTrades.FontWeight}" /> 
         <Setter Property="Foreground" Value="{Binding Path=ShortTrades.Foreground}" /> 
        </Style> 
       </DataGridTextColumn.CellStyle> 
      </DataGridTextColumn> 
      <DataGridTextColumn Header="Buy And Hold" Binding="{Binding Path=BuyAndHold.Value}"> 
       <DataGridTextColumn.CellStyle> 
        <Style TargetType="DataGridCell"> 
         <Setter Property="Background" Value="{Binding Path=BuyAndHold.Background}" /> 
         <Setter Property="FontWeight" Value="{Binding Path=BuyAndHold.FontWeight}" /> 
         <Setter Property="Foreground" Value="{Binding Path=BuyAndHold.Foreground}" /> 
        </Style> 
       </DataGridTextColumn.CellStyle> 
      </DataGridTextColumn> 
     </datagrid:ThemedDataGrid.Columns> 
    </datagrid:ThemedDataGrid> 
</Grid> 

Mais malheureusement, ce code est très lourd.

Peut-être avez-vous des idées pour l'améliorer?

Answer 1

DataGrid dans WPF prend en charge le regroupement, consultez cet article How to: Group, Sort, and Filter Data in the DataGrid Control. La même chose sur MSDN est assez similaire à votre problème.