如何在Silverlight中查找可见的DataGrid行?
最佳答案
我不确定Visible DataGridRow
是什么意思,但是您可以通过在可视树中找到它们来获得当前生成的所有DataGridRow
。基本上,这将为您提供所有可见的DataGridRow
,由于DataGrid
中使用的虚拟化功能,可能还会提供更多的可见性
例
private List<DataGridRow> GetDataGridRows(DataGrid dataGrid)
{
return GetVisualChildCollection<DataGridRow>(c_dataGrid);
}
GetVisualChildCollection
public static List<T> GetVisualChildCollection<T>(object parent) where T : FrameworkElement
{
List<T> visualCollection = new List<T>();
GetVisualChildCollection(parent as DependencyObject, visualCollection);
return visualCollection;
}
private static void GetVisualChildCollection<T>(DependencyObject parent, List<T> visualCollection) where T : FrameworkElement
{
int count = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < count; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, i);
if (child is T)
{
visualCollection.Add(child as T);
}
else if (child != null)
{
GetVisualChildCollection(child, visualCollection);
}
}
}