以之前的AppLog舉例
XAML:
<DataGrid.Resources>
<Style TargetType="{x:Type DataGridCell}">
<EventSetter Event="MouseDoubleClick" Handler="DataGridAppLogCell_MouseDoubleClick"/>
</Style>
</DataGrid.Resources>
C#:
//while是個令人擔心會吃效能的地方，測試耗時約1~2毫秒
//觀察Cell和Row差了6層，順序如下：
//0:System.Windows.Controls.DataGridCell
//1:System.Windows.Controls.DataGridCellsPanel
//2:System.Windows.Controls.ItemsPresenter
//3:System.Windows.Controls.Primitives.DataGridCellsPresenter
//4:System.Windows.Controls.Primitives.SelectiveScrollingGrid
//5:System.Windows.Controls.Border
//6:System.Windows.Controls.DataGridRow
//在DataGridCell上雙擊
void DataGridAppLogCell_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
AppLog logData = ((DataGridCell)sender).GetItem<AppLog>();
//Do something.
}
//找出DataGridCell所在的DataGridRow
//回傳DataGridRow所代表的資料
static T GetItem<T>(this DataGridCell obj) where T : class
{
DataGridRow row = obj.FindOwner<DataGridRow>();
return row == null ? null : (T)row.Item;
}
//找出DataGridRow
static T FindOwner<T>(this DependencyObject obj) where T : DependencyObject
{
DependencyObject parent = VisualTreeHelper.GetParent(obj);
while ((parent != null) && !(parent is T))
{
parent = VisualTreeHelper.GetParent(parent);
}
return parent as T;
}
達人
