有没有人知道是否有一个隐藏GridViewColumn的选项:
<ListView.View>
<GridView>
<GridViewColumn Header="Test" IsVisible="{Binding Path=ColumnIsVisible}" />
</GridView>
<ListView.View>
非常感谢!
编辑:为清晰起见
不幸的是,没有“IsVisible”属性。我正在寻找一种方法来创造它。
编辑:基于反馈的解决方案如下:
<GridViewColumn DisplayMemberBinding="{Binding Path=OptionColumn1Text}"
Width="{Binding Path=SelectedEntitiy.OptionColumn1Width}">
<GridViewColumnHeader Content="{Binding Path=SelectedEntitiy.OptionColumn1Header}" IsEnabled="{Binding Path=SelectedEntitiy.OptionColumn1Width, Converter={StaticResource widthToBool}}" />
</GridViewColumn>
public class WidthToBooleanConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return (int)value > 0;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
感谢所有人!
干杯
答案 0 :(得分:10)
编辑:反映修改过的问题。
创建0宽度列怎么样?写一个布局到宽度IValueConverter,它将ColumnIsVisible作为ConverterParmeter吗?
public class BooleanToWidthConverter : IValueConverter {
public object Convert(object value, Type targetType,
object parameter, CultureInfo culture){
return ((bool) parameter)? value : 0;
}
public object ConvertBack(object value, Type targetType,
object parameter, CultureInfo culture){
throw new NotImplementedException();
}
}
类似的东西:
<ListView .. >
<ListView.Resources>
<BooleanToWidthConverter x:Key="boolToWidth" />
</ListView.Resources>
<ListView.View>
<GridView>
<GridViewColumn
Header="Test"
Width=
"{Binding Path=ColumnWidth,
Converter={StaticResource boolToVis},
ConverterParameter=ColumnIsVisible}" />
</GridView>
<ListView.View>
答案 1 :(得分:7)
Here是另一种基于将列宽度设置为零的解决方案。我修改了一下。它现在的工作原理如下:
这是代码。
XAML:
<GridViewColumn
HeaderTemplate="..."
HeaderContainerStyle="...">
<GridViewColumnHeader
Content="Header text"
Visibility="{Binding AppliesToColumnVisible, Converter={StaticResource BooleanToVisibilityConverter}}"
behaviors:GridViewBehaviors.CollapseableColumn="True" />
BooleanToVisibilityConverter:
public class BooleanToVisibilityConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
bool param = bool.Parse(value.ToString());
if (param == true)
return Visibility.Visible;
else
return Visibility.Collapsed;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
附加行为GridViewBehaviors.CollapseableColumn:
public static readonly DependencyProperty CollapseableColumnProperty =
DependencyProperty.RegisterAttached("CollapseableColumn", typeof(bool), typeof(GridViewBehaviors),
new UIPropertyMetadata(false, OnCollapseableColumnChanged));
public static bool GetCollapseableColumn(DependencyObject d)
{
return (bool)d.GetValue(CollapseableColumnProperty);
}
public static void SetCollapseableColumn(DependencyObject d, bool value)
{
d.SetValue(CollapseableColumnProperty, value);
}
private static void OnCollapseableColumnChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
GridViewColumnHeader header = sender as GridViewColumnHeader;
if (header == null)
return;
header.IsVisibleChanged += new DependencyPropertyChangedEventHandler(AdjustWidth);
}
static void AdjustWidth(object sender, DependencyPropertyChangedEventArgs e)
{
GridViewColumnHeader header = sender as GridViewColumnHeader;
if (header == null)
return;
if (header.Visibility == Visibility.Collapsed)
header.Column.Width = 0;
else
header.Column.Width = double.NaN; // "Auto"
}
答案 2 :(得分:0)
我已将列设置为宽度=&#34; 0&#34;为零。 现在该列看起来不可见。但我不知道它是否会影响其他任何事情。 它可能是一个虚拟的解决方案,但现在它可以工作。
答案 3 :(得分:0)
一种更简单的方法,仍然使用将列宽设置为零的概念,但没有使用IValueConverter
的副作用(用户仍然可以将列拖得更宽)是创建一个新的getter / setter根据您的ColumnIsVisible
变量返回宽度,然后绑定到:
public double ColumnWidth
{
get
{
if (this.ColumnIsVisible)
{
return 100;
}
else
{
return 0;
}
}
set
{
OnPropertyChanged("ColumnWidth");
}
}
进行绑定TwoWay并且如果用户尝试拖动更宽的列OnPropertyChanged
将被调用并将宽度重置为0.您可能必须使用绑定代理来绑定。在更新ColumnIsVisible时,还要添加对OnPropertyChanged("ColumnWidth")
的调用:)
答案 4 :(得分:-1)
使用Thumb.DragDelta可以解决问题
我在listview中使用它作为
<ListView x:Name="MyListView"IsSynchronizedWithCurrentItem="True"
ItemsSource="{Binding Path=Items}", Mode=Default, Source={StaticResource DataProvider}}"
Thumb.DragDelta="Thumb_DragDelta">
public Window1()
{
InitializeComponent();
MyListView.AddHandler(Thumb.DragDeltaEvent, new DragDeltaEventHandler(Thumb_DragDelta), true );
void Thumb_DragDelta(object sender, DragDeltaEventArgs e)
{
Thumb senderAsThumb = e.OriginalSource as Thumb;
GridViewColumnHeader header = senderAsThumb.TemplatedParent as GridViewColumnHeader;
if (header.Column.ActualWidth < MIN_WIDTH)
{
header.Column.Width = MIN_WIDTH;
}
if (header.Column.ActualWidth > MAX_WIDTH)
{
header.Column.Width = MAX_WIDTH;
}
}
}