更改WPF DataGrid中單元格的背景顏色

Question

我需要一個簡單的code snippet來更改背景顏色WPFDataGridcell。我有column index和row index。我想改變CellEditEndingevent hadler中的顏色。我寫了event handler。現在我需要簡單的code snippet來更改的background color。

Answer 1

像下面這樣將允許您更改特定單元格的背景未經允許使用選擇具有...

using System.Windows; 
 
using System.Windows.Controls; 
 
using System.Windows.Controls.Primitives; 
 
using System.Windows.Media; 
 

 
namespace SelectDataGridCell 
 
{ 
 
\t public partial class MainWindow : Window 
 
\t { 
 
\t \t public MainWindow() 
 
\t \t { 
 
\t \t \t this.InitializeComponent(); 
 
\t \t } 
 

 
\t \t private void Button_Click(object sender, System.Windows.RoutedEventArgs e) 
 
\t \t { 
 
\t \t \t DataGridCell cell = GetCell(1, 1, myDataGrid); 
 
      \t \t cell.Background = new SolidColorBrush(Colors.Red); 
 
\t \t } 
 

 
     public DataGridCell GetCell(int rowIndex, int columnIndex, DataGrid dg) 
 
     { 
 
      DataGridRow row = dg.ItemContainerGenerator.ContainerFromIndex(rowIndex) as DataGridRow; 
 
      DataGridCellsPresenter p = GetVisualChild<DataGridCellsPresenter>(row); 
 
      DataGridCell cell = p.ItemContainerGenerator.ContainerFromIndex(columnIndex) as DataGridCell; 
 
      return cell; 
 
     } 
 

 
     static T GetVisualChild<T>(Visual parent) where T : Visual 
 
     { 
 
      T child = default(T); 
 
      int numVisuals = VisualTreeHelper.GetChildrenCount(parent); 
 
      for (int i = 0; i < numVisuals; i++) 
 
      { 
 
       Visual v = (Visual)VisualTreeHelper.GetChild(parent, i); 
 
       child = v as T; 
 
       if (child == null) 
 
       { 
 
        child = GetVisualChild<T>(v); 
 
       } 
 
       if (child != null) 
 
       { 
 
        break; 
 
       } 
 
      } 
 
      return child; 
 
     } 
 
\t } 
 
}

<Window 
 
\t xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
 
\t xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
 
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
 
\t x:Class="SelectDataGridCell.MainWindow" 
 
\t x:Name="Window" 
 
\t Title="MainWindow" 
 
\t Width="640" Height="480"> 
 

 
\t <Grid x:Name="LayoutRoot" DataContext="{Binding Source={StaticResource SampleDataSource}}"> 
 
\t \t <DataGrid x:Name="myDataGrid" Margin="0,0,244,205" AutoGenerateColumns="False" ItemsSource="{Binding Collection}"> 
 
\t \t \t <DataGrid.Columns> 
 
\t \t \t \t <DataGridTextColumn Binding="{Binding Property1}" Header="Property1"/> 
 
\t \t \t \t <DataGridCheckBoxColumn Binding="{Binding Property2}" Header="Property2"/> 
 
\t \t \t </DataGrid.Columns> 
 
\t \t </DataGrid> 
 
\t \t <Button Content="Button" HorizontalAlignment="Left" VerticalAlignment="Bottom" Width="75" Margin="8,0,0,146.04" Click="Button_Click"/> 
 
\t </Grid> 
 
</Window>