我目前正在数据网格中显示一个超链接,其中包含以下DataGridHyperLinkColumn定义:
<DataGridHyperlinkColumn Header="Item" Binding="{Binding Item, Mode=OneWay}">
<DataGridHyperlinkColumn.ElementStyle>
<Style>
<EventSetter Event="Hyperlink.Click" Handler="ButtonItemInfo_OnClick"/>
</Style>
</DataGridHyperlinkColumn.ElementStyle>
</DataGridHyperlinkColumn>
我想将其更改为有条件地显示超链接或标签(或文本块)。所以如果绑定值是“SH”,我想显示标签。否则我想要超链接。
我该如何做到这一点?
答案 0 :(得分:1)
我会将超链接绑定到命令,并在CanExecute
中有条件地返回false。您可以为超级用户设置禁用状态的样式。
<DataGrid ItemsSource="{Binding Items}">
<DataGrid.Columns>
<DataGridTemplateColumn Header="Item">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock>
<Hyperlink Command="{Binding DataContext.Navigate, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"
CommandParameter="{Binding}">
<TextBlock Text="{Binding}" />
</Hyperlink>
</TextBlock>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
ViewModel:
public ObservableCollection<string> Items
{
get;
set;
}
public ICommand Navigate
{
get
{
return new RelayCommand(
(param) => DoNavigate(param as string), // execute
(param) => // can execute
{
var link = param as string;
return link != "SH";
});
}
}
如果您确实需要某些行的文本框,可以在列格式样式中使用DataTrigger。
<DataGrid ItemsSource="{Binding Items}">
<DataGrid.Columns>
<DataGridTemplateColumn Header="Item">
<DataGridTemplateColumn.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="Template">
<Setter.Value>
<!-- Template for normal rows -->
<ControlTemplate>
<TextBlock>
<Hyperlink Command="{Binding DataContext.Navigate,
RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"
CommandParameter="{Binding}">
<TextBlock Text="{Binding}" />
</Hyperlink>
</TextBlock>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding}" Value="SH">
<Setter Property="Template">
<Setter.Value>
<!-- Template for SH rows -->
<ControlTemplate>
<TextBlock Text="{Binding}" />
</ControlTemplate>
</Setter.Value>
</Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGridTemplateColumn.CellStyle>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>