Question

我正在尝试根据条件为某些datagrids单元格着色，但不知道如何使用代码管理某些单元格的颜色

在以下代码中，如果日期为
，则第三列将为红色

我正在使用

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        LoadSummaryMesh();
    }

    private void LoadSummaryMesh()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("c1");
        dt.Columns.Add("c2");
        dt.Columns.Add("xxx", typeof(DateTime));
        dt.Rows.Add("aa", "" , DateTime.Now.AddDays(0));
        dt.Rows.Add("bb", "" ,DateTime.Now.AddDays(1));
        dt.Rows.Add("cc", "" , DateTime.Now.AddDays(2));
        this.dataGrid1.DataContext = dt;
    }
}

public class MyBkColorConverter : IValueConverter
{
    #region IValueConverter Members

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        DataRowView drv = value as DataRowView;
        if (drv != null)
        {
            DateTime dt = DateTime.Parse(drv[2].ToString());
            if (dt.Day % 2 == 0) //If it's a even number day.
                return Brushes.Red;
        }
        return Brushes.White;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
    #endregion
}

和xaml

<Window x:Class="SummaryMesh.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:SummaryMesh" 
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <local:MyBkColorConverter x:Key="bkColorCvrt"/>
        <Style x:Key="LeftAlignmentColumnHeaderStyle" TargetType="{x:Type DataGridColumnHeader}" BasedOn="{StaticResource WrappedColumnHeaderStyle}">
    <Setter Property="HorizontalContentAlignment" Value="Left"/>
</Style>

<Style x:Key="soDataGrid_ColumnHeaderRotateStyle" TargetType="DataGridColumnHeader" >
            <Setter Property="ContentTemplate" >
                <Setter.Value>
                    <DataTemplate>
                        <TextBlock TextWrapping="Wrap" Text="{Binding}"
                           FontWeight="Bold" Width="90"
                           VerticalAlignment="Center" TextAlignment="Center"
                           HorizontalAlignment="Center">
                    <TextBlock.LayoutTransform>
                        <RotateTransform Angle="270" />
                    </TextBlock.LayoutTransform>
                        </TextBlock>
                    </DataTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="HorizontalContentAlignment" Value="Center" />
        </Style>
    </Window.Resources>

    <Grid>



        <DataGrid ItemsSource="{Binding}"  
                  AutoGenerateColumns="False"
                  ColumnHeaderStyle ="{StaticResource soDataGrid_ColumnHeaderRotateStyle}"
                  Margin="22,12,18,19" Name="dataGrid1" 
                     xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit">




            <DataGrid.Columns>
                <DataGridTextColumn Binding="{Binding c1}" Width="80"  Header="c1" />
                <DataGridTextColumn Binding="{Binding c2}" Width="80" Header="c2"/>
                <DataGridTextColumn Binding="{Binding xxx}" Width="80"  Header="xxx">
                    <DataGridTextColumn.CellStyle>
                        <Style TargetType="{x:Type DataGridCell}">
                            <Setter Property="Background">
                                <Setter.Value>
                                    <Binding Converter="{StaticResource bkColorCvrt}"/>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </DataGridTextColumn.CellStyle>
                </DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>

获得：

现在的问题是如何才能将第二列标题颜色变为蓝色以及如何将[第二列，第二行]设置为黄色（使用我正在使用的数据表）？

类似的东西

Answer 1

对于'黄色'单元格，您可以作为第三列。添加新转换器：

    public class MyBkColorConverter2 : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            DataRowView drv = value as DataRowView;
            if (drv != null)
            {
                int rownum = drv.Row.Table.Rows.IndexOf(drv.Row);
                if (rownum == 1)
                {
                    return Brushes.Yellow;
                }
            }
            return Brushes.White;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

在xaml中添加：

...
<local:MyBkColorConverter2 x:Key="bkColorCvrt2"/>
...

              <DataGridTextColumn Binding="{Binding c2}" Width="80" Header="c2">
                    <DataGridTextColumn.HeaderStyle>
                        <Style TargetType="{x:Type DataGridColumnHeader}" BasedOn="{StaticResource soDataGrid_ColumnHeaderRotateStyle}">
                            <Setter Property="Background">
                                <Setter.Value>
                                    <SolidColorBrush Color="Yellow"/>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </DataGridTextColumn.HeaderStyle>
                    <DataGridTextColumn.CellStyle>
                        <Style TargetType="{x:Type DataGridCell}">
                            <Setter Property="Background">
                                <Setter.Value>
                                    <Binding Converter="{StaticResource bkColorCvrt2}"/>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </DataGridTextColumn.CellStyle>
                </DataGridTextColumn>

对于列标题：

                <DataGridTextColumn Binding="{Binding c2}" Width="80" Header="c2">
                    <DataGridTextColumn.HeaderStyle>
                        <Style TargetType="{x:Type DataGridColumnHeader}" BasedOn="{StaticResource soDataGrid_ColumnHeaderRotateStyle}">
                            <Setter Property="Background">
                                <Setter.Value>
                                    <SolidColorBrush Color="Yellow"/>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </DataGridTextColumn.HeaderStyle>
                </DataGridTextColumn>

Answer 2

首先关于＆＃39;黄色＆＃39;您已经有一个答案，只需更改CellStyle第二列，就像第三列一样。

第二个关于标题：在TextBlock模板上为DataGridColumnHeader添加样式，并设置所需的触发器，以便他们更改背景，或者将TextBlock包裹在网格中并将其设置为＆＃39;基于触发器的背景。

如何为数据网格wpf的某些标题列和某些单元格着色

2 个答案: