Question

如何在每个窗口中找到第一个元素（网格元素）？我需要得到窗口孩子。但我不想使用“VisualStateHelper”。谢谢你的帮助。

Answer 1

this.Content应该做的伎俩

public MainWindow()
{
    InitializeComponent();

    Grid grid = this.Content as Grid; //grid will be null if the first child is not a Grid
    if(grid != null)
    {
         //do the work you want to do
    }
}

Answer 2

这是一个静态完成所有操作的解决方案。你可以从任何地方打电话。

    using System.Windows;

    ...

    /// <summary>
    /// Gets the child <see cref="System.Windows.Grid"/> instances of all windows that have them as the first child.
    /// </summary>
    /// <returns>An enumerable of tuples pairing the window instance with the child grid.</returns>
    public static IEnumerable<Tuple<Window, Grid>> GetAllGrids()
    {
        foreach (var window in Application.Current.Windows)
        {
            Grid grid = this.Content as Grid; //grid will be null if the first child is not a Grid
            if (grid != null)
            {
                yield return Tuple.Create(window, grid);
            }
        }
    }

如何在WPF中找到UIElement？

2 个答案: