C# 如何从DataGridTemplateColumn.CellTemplate访问按钮
我为DataGrid提供了以下.xaml,并希望在.cs代码中的特定条件下显示/隐藏按钮C# 如何从DataGridTemplateColumn.CellTemplate访问按钮,c#,wpf,data-binding,C#,Wpf,Data Binding,我为DataGrid提供了以下.xaml,并希望在.cs代码中的特定条件下显示/隐藏按钮 <DataGridTemplateColumn Header="Action" Width="auto" > <DataGridTemplateColumn.CellTemplate> <DataTemplate> <StackPanel Orientation="Horizontal">
<DataGridTemplateColumn Header="Action" Width="auto" >
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Button x:Name="btnConfirm" Content="Confirm" Click="ConfirmButton_Click" Height="auto" Width="auto" Opacity="100" Background="Transparent" BorderBrush="Transparent" HorizontalAlignment="Left"/>
<Button x:Name="btnDecline" Content="Decline" Click="btnDecline_Click" Height="auto" Width="auto" Opacity="100" Background="Transparent" BorderBrush="Transparent" HorizontalAlignment="Left" />
<Button x:Name="btnCancel" Content="Cancel" Click="btnCancel_Click" Height="auto" Width="auto" Opacity="100" Background="Transparent" BorderBrush="Transparent" HorizontalAlignment="Left"/>
</StackPanel>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
您必须为此使用绑定。所以,让我们采取一种快速的方法: 以下是这方面的代码:
public partial class MainWindow : Window
{
public bool ButtonIsVisible
{
get { return (bool)GetValue(ButtonIsVisibleProperty); }
set { SetValue(ButtonIsVisibleProperty, value); }
}
// Using a DependencyProperty as the backing store for ButtonIsVisible. This enables animation, styling, binding, etc...
public static readonly DependencyProperty ButtonIsVisibleProperty =
DependencyProperty.Register("ButtonIsVisible", typeof(bool), typeof(MainWindow), new UIPropertyMetadata(true));
public ObservableCollection<Person> items { get; set; }
public MainWindow()
{
InitializeComponent();
items = new ObservableCollection<Person>();
items.Add(new Person() { Name = "FirstName" });
items.Add(new Person() { Name = "SecondName" });
this.DataContext = this;
}
}
public class BoolToVis : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var isVisible = (bool)value;
return isVisible ? Visibility.Visible : Visibility.Hidden;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
您的可见性不是布尔类型,因此我们需要一个转换器:
public partial class MainWindow : Window
{
public bool ButtonIsVisible
{
get { return (bool)GetValue(ButtonIsVisibleProperty); }
set { SetValue(ButtonIsVisibleProperty, value); }
}
// Using a DependencyProperty as the backing store for ButtonIsVisible. This enables animation, styling, binding, etc...
public static readonly DependencyProperty ButtonIsVisibleProperty =
DependencyProperty.Register("ButtonIsVisible", typeof(bool), typeof(MainWindow), new UIPropertyMetadata(true));
public ObservableCollection<Person> items { get; set; }
public MainWindow()
{
InitializeComponent();
items = new ObservableCollection<Person>();
items.Add(new Person() { Name = "FirstName" });
items.Add(new Person() { Name = "SecondName" });
this.DataContext = this;
}
}
public class BoolToVis : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var isVisible = (bool)value;
return isVisible ? Visibility.Visible : Visibility.Hidden;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
下面是整个XAML代码:
<Window x:Class="DataGridCellsBackground.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"
xmlns:local="clr-namespace:DataGridCellsBackground" >
<Grid>
<Grid.Resources>
<local:BoolToVis x:Key="BoolTovisibilityConverter"/>
</Grid.Resources>
<DataGrid SelectionUnit="Cell"
ItemsSource="{Binding items}"
AutoGenerateColumns="False">
<DataGrid.Resources>
</DataGrid.Resources>
<DataGrid.Columns>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Content="Visible" Visibility="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.ButtonIsVisible, Converter={StaticResource BoolTovisibilityConverter}}"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
事实上,您在按钮可见性中看到了一种奇怪的绑定语法。为什么呢?我假设您在模型中不需要这个功能,所以我回到了DataGrid的DataContext,以达到这个DependencyProperty。我不能完全确定您的场景,但我已经向您展示了一些易于使用的机制。我已经编辑了您的标题。请参阅“”,其中的共识是“不,他们不应该”。可能重复