将前景设计为DataGrid的奇怪问题

时间:2013-07-11 22:32:33

标签: wpf xaml data-binding wpfdatagrid

老实说,我不确定我在哪里出错,但无论出于何种原因,下面看到的前景风格都没有应用到数据网格。我不知道这个,因为我真的不知道如何调试xaml。

<DataGrid Name="dgProperties" Background="#1E918D8D" SelectionMode="Extended" SelectionUnit="FullRow" ItemsSource="{Binding CurFieldData}" AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserSortColumns="True" IsReadOnly="True">

    <DataGrid.RowStyle>
        <Style  TargetType="{x:Type DataGridRow}" >
            <Setter Property="Foreground" Value="#3535bb" />

            <!--<Style.Triggers>
                <DataTrigger Binding="{Binding Path=DiffState}" Value="Different">
                    <Setter Property="Foreground" Value="#3535BB" />
                </DataTrigger>
            </Style.Triggers>-->

        </Style>
    </DataGrid.RowStyle>

    <DataGrid.Columns>
        <DataGridTextColumn Header="Property" FontSize="12"  Binding="{Binding Name}" Width="2*" />
        <DataGridTextColumn Header="Left Value" FontSize="12" Binding="{Binding LeftValue}"  Width="4*" />
        <DataGridTextColumn Header="Right Value" FontSize="12" Binding="{Binding RightValue}"  Width="4*"/>                                
    </DataGrid.Columns>
</DataGrid>

您可以通过注释掉的触发器来判断,但我最初计划重新着色网格中标记为不同的所有条目(后面的代码中的枚举)。然而,这对我不起作用,所以我想尝试看看风格是否被设置,无论触发器如何。

有人看到或知道为什么没有应用这种风格?

2 个答案:

答案 0 :(得分:0)

它似乎工作得很好,我已经添加了我的测试代码,因为它有帮助

的Xaml:

<Window x:Class="WpfApplication7.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Name="UI">
    <DataGrid Name="dgProperties" Background="#1E918D8D" SelectionMode="Extended" SelectionUnit="FullRow" ItemsSource="{Binding Items, ElementName=UI}" AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserSortColumns="True" IsReadOnly="True">
        <DataGrid.RowStyle>
            <Style  TargetType="{x:Type DataGridRow}" >
                <Setter Property="Foreground" Value="Black" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding Path=DiffState}" Value="Different">
                        <Setter Property="Foreground" Value="Red" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </DataGrid.RowStyle>

        <DataGrid.Columns>
            <DataGridTextColumn Header="Property" FontSize="12"  Binding="{Binding Name}" Width="2*" />
            <DataGridTextColumn Header="Left Value" FontSize="12" Binding="{Binding LeftValue}"  Width="4*" />
            <DataGridTextColumn Header="Right Value" FontSize="12" Binding="{Binding RightValue}"  Width="4*"/>
        </DataGrid.Columns>
    </DataGrid>
</Window>

代码:

public partial class MainWindow : Window
{
    private ObservableCollection<GridItem> items = new ObservableCollection<GridItem>();

    public MainWindow()
    {
        InitializeComponent();
        for (int i = 0; i < 1000; i++)
        {
            Items.Add(new GridItem { Name = "StackOverflow" + i, LeftValue = i % 4, RightValue = i % 2 });
        }
    }

    public ObservableCollection<GridItem> Items
    {
        get { return items; }
        set { items = value; }
    }

}

public class GridItem
{
    public string Name { get; set; }

    public int LeftValue { get; set; }
    public int RightValue { get; set; }

    public DiffState DiffState
    {
        get
        {
            if (LeftValue == RightValue)
            {
                return DiffState.Same;
            }
            return DiffState.Different;
        }
    }
}

public enum DiffState
{
    Different,
    Same
}

结果:

enter image description here

答案 1 :(得分:0)

DataGridRow的样式可能会被对象图上方出现的设置混淆,尤其是交替行背景。如sa_ddam213的答案所示,Xaml在没有声明任何其他内容时工作。纯粹作为诊断加速器,将这四行添加到DataGrid声明......

  RowBackground="Transparent"
  Background="Transparent"
  AlternatingRowBackground="Transparent"
  Foreground="Transparent"

然后检查您的前景属性及其触发器。然后,您可以在DataGrid上改变这四个属性,以识别混杂的影响(然后将其删除)。

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