Question

所以我试图根据Datagrid的值更改Datagrid中单元格的背景。因此，如果我想根据静态值更改它，我会使用StyleTrigger，但事实并非如此。

例如：如果单元格的值介于80和100之间，则需要绿色背景;如果值介于40和79之间，则需要橙色背景;如果低于40，则需要红色背景...我将如何实现？

目前我正在使用StyleTrigger进行测试，所以不要介意......

这是我的XAML代码：

<DataGrid Background="LightGray" ItemsSource="{Binding Source={StaticResource Properties}, Path=TableData}"
                  AutoGenerateColumns="False" IsReadOnly="True">
            <DataGrid.Columns >
                <DataGridTextColumn Width="100" Header="ID" Binding="{Binding ID}"></DataGridTextColumn>
                <DataGridTextColumn Width="100" Header="Batterie" Binding="{Binding Battery}" >
                    <DataGridTextColumn.ElementStyle>
                        <Style TargetType="{x:Type TextBlock}">
                            <Style.Triggers>
                                <Trigger Property="Text" Value="83">
                                    <Setter Property="Background" Value="LightGreen"/>
                                </Trigger>
                            </Style.Triggers>
                        </Style>
                    </DataGridTextColumn.ElementStyle>
                </DataGridTextColumn>
                <DataGridTextColumn Width="100" Header="Current Use" Binding="{Binding CurrentUse}"></DataGridTextColumn>
                <DataGridTextColumn Width="100" Header="Occupancy" Binding="{Binding Occupancy}"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>

任何帮助表示赞赏!!

Answer 1

我通过编写一个从IValueConverter接口实现的Converter来解决这个问题。

如果你想在XAML中看到你的转换器，你需要将它引用到像这样的静态资源

<Window.Resources>
    <local:myConverter x:Key="myConverter"/>
</Window.Resources>

我的设计;

    <Grid>
        <DataGrid Name="dgList" Background="LightGray" AutoGenerateColumns="False" IsReadOnly="True">
            <DataGrid.Columns >
                <DataGridTextColumn Width="100" Header="ID" Binding="{Binding ID}"></DataGridTextColumn>
                <DataGridTextColumn Width="100" Header="Batterie" Binding="{Binding Battery}" >
                    <DataGridTextColumn.ElementStyle>
                        <Style TargetType="{x:Type TextBlock}">
                            <Setter Property="Background" Value="{Binding Battery, Converter={StaticResource myConverter}}"></Setter>
                        </Style>
                    </DataGridTextColumn.ElementStyle>
                </DataGridTextColumn>
                <DataGridTextColumn Width="100" Header="Current Use" Binding="{Binding CurrentUse}"></DataGridTextColumn>
                <DataGridTextColumn Width="100" Header="Occupancy" Binding="{Binding Occupancy}"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>

此绑定将您的数据电池（10,30,40,80等）发送到转换器。转换器返回一个对象，我们的对象必须是一个SolidColorBrush来绑定它为BackGround.That＆＃ 39; s all。我解决了这个问题

<Setter Property="Background" Value="{Binding Battery, Converter={StaticResource myConverter}}"></Setter>

myConverter用于将数据转换为背景;

public class myConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        SolidColorBrush clr;
        if (int.Parse(value.ToString()) >= 80)
            clr = new SolidColorBrush(Colors.Green);
        else if (int.Parse(value.ToString()) >= 40)
            clr = new SolidColorBrush(Colors.Orange);
        else if (int.Parse(value.ToString()) >= 0)
            clr = new SolidColorBrush(Colors.Red);
        else
            clr = new SolidColorBrush(Colors.White);

        return clr;
    }

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

我为你的例子创建了一个课程（如果对不起，我没有看到你的那个）

public class Class1
{
    public int ID { get; set; }       
    public string Battery { get; set; }
    public string CurrentUse { get; set; }
    public string Occupancy { get; set; }

    public static List<Class1> myList = new List<Class1>()
    {
        new Class1() {ID = 1, Battery = "70", CurrentUse = "xxxx", Occupancy = "xxxx" },
        new Class1() {ID = 2, Battery = "100", CurrentUse = "xxxx", Occupancy = "xxxx" },
        new Class1() {ID = 3, Battery = "10", CurrentUse = "xxxx", Occupancy = "xxxx" },
        new Class1() {ID = 4, Battery = "50", CurrentUse = "xxxx", Occupancy = "xxxx" },
        new Class1() {ID = 5, Battery = "80", CurrentUse = "xxxx", Occupancy = "xxxx" },
        new Class1() {ID = 6, Battery = "40", CurrentUse = "xxxx", Occupancy = "xxxx" },
        new Class1() {ID = 7, Battery = "39", CurrentUse = "xxxx", Occupancy = "xxxx" }
    };
}

在MainWindow上

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    dgList.ItemsSource = Class1.myList;
}

我的项目截图。

如果值介于a和b之间，则更改DataGridTextColumn的背景

1 个答案: