Ho bisogno di Expand/Collapse per RowDetailsTemplate

Question

Ho wagrfotest datagrid. Ha DataGrid.RowDetailsTemplate Ho bisogno di fare il pulsante quando si fa clic su Espandere/Comprimere.

come fare questo non riuscivo a trovare l'evento che si desidera

<Custom:DataGrid RowDetailsVisibilityMode="VisibleWhenSelected" SelectionMode="Extended" CanUserAddRows="False" CanUserDeleteRows="False" CanUserResizeRows="False" CanUserSortColumns="False"> 
    <Custom:DataGrid.RowDetailsTemplate> 
     <DataTemplate> 
      <Custom:DataGrid> 
       <Custom:DataGrid.Columns> 
        <Custom:DataGridTextColumn Binding="{Binding idClient, Mode=Default}" Header="Ид" IsReadOnly="True"/> 
        <Custom:DataGridTextColumn Binding="{Binding name_client, Mode=Default}" Header="Имя" IsReadOnly="True"/> 
       </Custom:DataGrid.Columns> 
      </Custom:DataGrid> 
     </DataTemplate> 
    </Custom:DataGrid.RowDetailsTemplate> 
    <Custom:DataGrid.Columns> 
     <Custom:DataGridTemplateColumn> 
      <Custom:DataGridTemplateColumn.CellTemplate> 
       <DataTemplate> 
        <Expander IsExpanded="True"/> 
       </DataTemplate> 
      </Custom:DataGridTemplateColumn.CellTemplate> 
     </Custom:DataGridTemplateColumn> 
     <Custom:DataGridTextColumn Binding="{Binding idPartner, Mode=Default}" Header="Ид" IsReadOnly="True"/> 
     <Custom:DataGridTextColumn Binding="{Binding name_partner, Mode=Default}" Header="Имя" IsReadOnly="True"/> 
    </Custom:DataGrid.Columns> 
</Custom:DataGrid> 

Answer 1

Selezione di una fila in griglia dovrebbe espandere la riga utilizzando la RowDetailsTemplate per visualizzare il contenuto. Ciò rende a Riga la riga selezionata e imposta il valore della proprietà SelectedIndex di DataGrid.

Per comprimere la riga, impostare la proprietà SelectedIndex del DataGrid su -1.

Answer 2

Includi crollò e gli eventi, aggiungere quanto di seguito

<Custom:DataGridTemplateColumn> 
    <Custom:DataGridTemplateColumn.CellTemplate> 
      <DataTemplate> 
       <Expander Collapsed="exp_Collapsed" Expanded="exp_Expanded"/> 
      </DataTemplate> 
     </Custom:DataGridTemplateColumn.CellTemplate> 
    </Custom:DataGridTemplateColumn> 

nel codice dietro

private void exp_Collapsed(object sender, RoutedEventArgs e) 
     { 
      this.dataGrid1.RowDetailsVisibilityMode = DataGridRowDetailsVisibilityMode.Collapsed; 
     } 

     private void exp_Expanded(object sender, RoutedEventArgs e) 
     { 
      this.dataGrid1.RowDetailsVisibilityMode = DataGridRowDetailsVisibilityMode.VisibleWhenSelected; 
     } 

Answer 3

Scegli questa ...

Adding a Button to a WPF DataGrid

O

XAML:

<DataGrid Name="dg1" AutoGenerateColumns="False" SelectionMode="Single" CanUserAddRows="false" CanUserDeleteRows="False" SelectionUnit="FullRow" > 
    <DataGrid.CellStyle> 
     <Style TargetType="DataGridCell"> 
      <Setter Property="BorderThickness" Value="0"/> 
     </Style> 
    </DataGrid.CellStyle> 

    <DataGrid.RowHeaderTemplate> 
     <DataTemplate> 
      <Expander Expanded="Expander_Expanded" Collapsed="Expander_Collapsed"> 

      </Expander> 
     </DataTemplate> 
    </DataGrid.RowHeaderTemplate> 

    <DataGrid.Columns> 
     <DataGridTextColumn Header="Name" IsReadOnly="True" Width="100" Binding="{Binding Name}" /> 
     <DataGridTextColumn Header="Title" IsReadOnly="True" Width="100" Binding="{Binding Title}" /> 
     <DataGridTextColumn Header="Job" IsReadOnly="True" Width="100" Binding="{Binding Job}" /> 
    </DataGrid.Columns> 

    <DataGrid.RowDetailsTemplate> 
     <DataTemplate> 
      <TextBlock Text="{Binding Isi, Converter={StaticResource ResourceKey=isiTextConverter}}" Margin="10,5,0,0" /> 
     </DataTemplate> 
    </DataGrid.RowDetailsTemplate> 
</DataGrid> 

MainWindow.xaml.cs

private void Expander_Expanded(object sender, RoutedEventArgs e) 
{ 
    for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual) 
    if (vis is DataGridRow) 
    { 
     var row = (DataGridRow)vis; 
     row.DetailsVisibility = row.DetailsVisibility == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible; 
     break; 
    } 
} 

private void Expander_Collapsed(object sender, RoutedEventArgs e) 
{ 
    for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual) 
     if (vis is DataGridRow) 
     { 
      var row = (DataGridRow)vis; 
      row.DetailsVisibility = row.DetailsVisibility == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible; 
      break; 
     } 
} 

uscita

.210

Answer 4

ho migliorato la risposta precedente:

Invece di usare DataGrid.RowHeaderTemplate utilizzare DataGridTemplateColumn come di seguito:

<DataGridTemplateColumn> 
    <DataGridTemplateColumn.CellTemplate> 
      <DataTemplate> 
       <Expander Expanded="Expander_OnExpanded"  Collapsed="Expander_OnCollapsed"> 
       </Expander> 
      </DataTemplate> 
    </DataGridTemplateColumn.CellTemplate> 
</DataGridTemplateColumn> 

Benifit è non c'è bisogno di ri posizione il mouse dopo aver fatto clic pulsante di espansione.