如何在屬性更改時停止DataGrid摺疊RowDetails？

Question

給定帶有切換行詳細信息按鈕的DataGrid。爲什麼每當財產被更改時都會摺疊細節？

它摺疊細節每當列使用：

UpdateSourceTrigger=LostFocus 

而且它縮短了它每當在詳細視圖中的屬性被更新。

有沒有辦法讓它打開？該行仍處於選中狀態。

XAML：

RowDetailsVisibilityMode="Collapsed" 

       <DataGridTemplateColumn> 
        <DataGridTemplateColumn.CellTemplate> 
         <DataTemplate> 
          <Button x:Name="buttonDetails" Content="Hello" ButtonBase.Click="Details_Click"/> 
         </DataTemplate> 
        </DataGridTemplateColumn.CellTemplate> 
       </DataGridTemplateColumn> 

C＃：

// Load stuff from db 
    _context.JobCollection.Load(); 

    // Set source with db stuff 
    jobViewSource.Source = _context.JobCollection.Local; 



    private void Details_Click(object sender, RoutedEventArgs e) 
    { 
     try 
     { 
      // the original source is what was clicked. For example 
      // a button. 
      DependencyObject dep = (DependencyObject)e.OriginalSource; 

      // iteratively traverse the visual tree upwards looking for 
      // the clicked row. 
      while ((dep != null) && !(dep is DataGridRow)) 
      { 
       dep = VisualTreeHelper.GetParent(dep); 
      } 

      // if we found the clicked row 
      if (dep != null && dep is DataGridRow) 
      { 
       // get the row 
       DataGridRow row = (DataGridRow)dep; 

       // change the details visibility 
       if (row.DetailsVisibility == Visibility.Collapsed) 
       { 
        row.DetailsVisibility = Visibility.Visible; 
       } 
       else 
       { 
        row.DetailsVisibility = Visibility.Collapsed; 
       } 
      } 
     } 
     catch (System.Exception) 
     { 
     } 
    } 

Answer 1

幾個建議的變化：

1. 應用RowDetailsVisibilityMode="Collapsed"您的DataGrid。

2. 您點擊按鈕應該是這樣的：

   private void Details_Click(object sender, RoutedEventArgs e) 
   { 
       DataGridRow row = (DataGridRow)Dgrd1.ItemContainerGenerator.ContainerFromItem(Dgrd1.SelectedItem); 
   
       if (row.DetailsVisibility == System.Windows.Visibility.Visible) 
        row.DetailsVisibility = System.Windows.Visibility.Collapsed; 
       else 
        row.DetailsVisibility = System.Windows.Visibility.Visible; 
   }