wpf 数据网格剪贴板复制模式 = "IncludeHeader" 与自定义标头



我有一个WPF表,它有一个自定义标题(基于StackPanel),其中包括一个按钮,用于显示和处理设置列的单位。这工作得很好,但我希望能够将数据复制到剪贴板,包括标题。

<DataGrid ClipboardCopyMode="IncludeHeader"
...
<DataGridTextColumn Header="Some Header" Binding={Binding Path=SomeValue}/>
<DataGridTextColumn Binding={Binding Path=OtherValue, Converter="{StaticResource unitsConverter}">
<DataGridTextColumn.Header>
<StackPanel>
<TextBlock Text="Period" />
<Button ... />
</Stackpanel>

问题是具有自定义标题的列作为复制到剪贴板

SomeHeader System.Windows.Controls.StackPanel
v1         33

当使用自定义页眉时,是否有方法更改页眉打印的文本?

我四处寻找解决方案,然后最终将我的自定义头控件子类化,只是为了覆盖ToString(),以便ClipboardCopyMode="IncludeHeader"复制正确的文本。

在我的例子中,我在标题中使用了一个图像:

class HeaderImage : Image
{
    public override string ToString()
    {
        return Tag.ToString();
    }
}

Xaml:

 <DataGridCheckBoxColumn.Header>
     <elements:HeaderImage Source="..Resourcesskull.png" Width="15" Tag="Deprecated"/>
 </DataGridCheckBoxColumn.Header>

现在,复制/粘贴数据已被"弃用",而不是System.Windows.Controls.Image。我相信你也可以用StackPanel。我使用Tag作为标题文本,因为它很方便

当我使用一个有文本块的HeaderTemplate时,我正在寻找这个问题的解决方案。在我的情况下,我用附加的属性解决了这个问题。您可以看到,我只是从页眉模板中获取文本,并将其设置到页眉属性中。通过这种方式,剪贴板复制模式IncludeHeader按预期工作。

 /// <summary>  
 /// WPF Data grid does not know what is in a header template, so it can't copy it to the clipboard when using ClipboardCopyMode="IncludeHeader".  
 /// This attached property works with a header template that includes one TextBlock. Text content from the templates TextBlock is copied to the  
 /// column header for the clipboard to pick up.  
 /// </summary>  
public static class TemplatedDataGridHeaderText  
{  
 private static readonly Type OwnerType = typeof(TemplatedDataGridHeaderText);  
 public static readonly DependencyProperty UseTextFromTemplateProperty = DependencyProperty.RegisterAttached("UseTextFromTemplate", typeof(bool), OwnerType, new PropertyMetadata(false, OnHeaderTextChanged));  
 public static bool GetUseTextFromTemplate(DependencyObject obj)  
 {  
   return (bool)obj.GetValue(UseTextFromTemplateProperty);  
 }  
 public static void SetUseTextFromTemplate(DependencyObject obj, bool value)  
 {  
   obj.SetValue(UseTextFromTemplateProperty, value);  
 }  
 private static void OnHeaderTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)  
 {  
   var textColumn = d as DataGridTextColumn;  
   if (textColumn == null) return;  
   if (textColumn.HeaderTemplate == null) return;  
   var headerTemplateTexblockText = textColumn.HeaderTemplate.LoadContent().GetValue(TextBlock.TextProperty).ToString();  
   textColumn.Header = headerTemplateTexblockText;  
 }  
}  

xaml看起来是这样的。。。。

 <DataGrid ItemsSource="{Binding }" AutoGenerateColumns="False" IsReadOnly="True" VerticalScrollBarVisibility="Auto" VerticalAlignment="Stretch">  
 <DataGrid.Columns>  
   <DataGridTextColumn Binding="{Binding FlowRate.UserValue, StringFormat=N3}" HeaderTemplate="{StaticResource FlowRate}"  
             attachedProperties:TemplatedDataGridHeaderText.UseTextFromTemplate="True"/>  
   <DataGridTextColumn Binding="{Binding Pressure.UserValue, StringFormat=N3}" HeaderTemplate="{StaticResource Pressure}"  
             attachedProperties:TemplatedDataGridHeaderText.UseTextFromTemplate="True"/>  
 </DataGrid.Columns>  

更多信息可以在这里找到。。。http://waldoscode.blogspot.com/2014/08/issue-using-wpf-datagrid-columnheader.html

我在GetFuzzy的链接中使用了替代AttachedPropertyhttp://waldoscode.blogspot.com/2014/08/issue-using-wpf-datagrid-columnheader.html.作者(Don)创建了一个AttachedProperty,如下所示(带有我自己的几个小MOD):

/// <summary>  
/// Allows binding a property to the header text. Works with the clipboard copy mode - IncludeHeaders.  
/// </summary>  
public static class DataGridHeaderTextAttachedProperty  
{  
  private static readonly Type OwnerType = typeof(DataGridHeaderTextAttachedProperty);  
  public static readonly DependencyProperty HeaderTextProperty = DependencyProperty.RegisterAttached("HeaderText", typeof(string), OwnerType, new PropertyMetadata(OnHeaderTextChanged));  
  public static string GetHeaderText(DependencyObject obj)  
  {  
    return (string)obj.GetValue(HeaderTextProperty);  
  }  
  public static void SetHeaderText(DependencyObject obj, string value)  
  {  
    obj.SetValue(HeaderTextProperty, value);  
  }  
  private static void OnHeaderTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)  
  {  
    var column = d as DataGridColumn;  
    if (column == null) return;  
    column.Header = GetHeaderText(column);  
  }  
}

设置Column时,我无法使其工作。直接使用Header,但能够使其与HeaderTemplate一起工作,如下所示:

<DataGridTemplateColumn ...
                        ui:DataGridHeaderTextAttachedProperty.HeaderText="Some Text">
    <DataGridTemplateColumn.HeaderTemplate>
        <DataTemplate>
            <Path Data="{StaticResource SomeGeometry}" ... />
        </DataTemplate>
    </DataGridTemplateColumn.HeaderTemplate>
    ...
</DataGridTemplateColumn>

感谢GetFuzzy的精彩博客帖子!

最新更新