C# - WPF在DataGridColumnHeader中使用DataTrigger
C# - WPF在DataGridColumnHeader中使用DataTrigger
提问于 2013-01-18 17:21:59
如何在DataGridColumHeader中使用DataTriggers？使用下面的代码，它不能工作。有人知道我怎么解决这个问题吗？
<DataGridTextColumn.HeaderStyle>
<Style TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="Background" Value="#FFFFBD21" />
<Style.Triggers>
<DataTrigger Binding="{Binding HasChangedRows}" Value="false">
<Setter Property="Background" Value="#66FFBD21"/>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGridTextColumn.HeaderStyle>回答 1
Stack Overflow用户
回答已采纳
发布于 2013-01-21 20:07:38
在新的解决方案中检查此代码，您将看到，如果正确设置了HasChangedRows绑定，则它应该可以工作。您可以使用复选框来更改HasChangedRows的值
<Window x:Class="WpfApplication10.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" Loaded="Window_Loaded">
<StackPanel>
<CheckBox IsThreeState="False" IsChecked="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}, Path=HasChanges, Mode=TwoWay}"
Content="{Binding RelativeSource={RelativeSource Mode=Self}, Path=IsChecked}"/>
<DataGrid Name="MainGrid" AutoGenerateColumns="False">
<DataGrid.Resources>
<Style TargetType="{x:Type DataGridColumnHeader}" x:Key="customheaderstyle">
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}, Path=HasChanges}" Value="false">
<Setter Property="Background" Value="#66FFBD21"/>
</DataTrigger>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Window}}, Path=HasChanges}" Value="true">
<Setter Property="Background" Value="#FFFFBD21" />
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.Resources>
<DataGrid.Columns>
<DataGridTextColumn HeaderStyle="{StaticResource customheaderstyle}" Binding="{Binding}"/>
</DataGrid.Columns>
</DataGrid>
</StackPanel>
</Window>和代码背后：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.ComponentModel;
namespace WpfApplication10
{
public partial class MainWindow : Window, INotifyPropertyChanged
{
#region INotifyPropertyChanged
public event PropertyChangedEventHandler PropertyChanged;
protected void NotifyPropertyChange(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
private bool _HasChanges = false;
public bool HasChanges
{
get { return this._HasChanges; }
set
{
this._HasChanges = value;
NotifyPropertyChange("HasChanges");
}
}
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
String[] list = { "1", "2", "3", "4" };
this.MainGrid.ItemsSource = list;
}
}
}最终结果：
和
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原文链接：
https://stackoverflow.com/questions/14395781
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