按类型查找 WPF 窗口中的所有控件 [英] Find all controls in WPF Window by type

问题描述

我正在寻找一种方法来按类型查找 Window 上的所有控件，

I'm looking for a way to find all controls on Window by their type,

例如:查找所有TextBoxes，查找所有实现特定接口的控件等

for example: find all TextBoxes, find all controls implementing specific interface etc.

推荐答案

这应该可以解决问题

public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
{
    if (depObj == null)
        return;
    
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
    {
        var child = VisualTreeHelper.GetChild(depObj, i);

        if (child != null && child is T)
            yield return (T)child;
                
        foreach (T childOfChild in FindVisualChildren<T>(child))
            yield return childOfChild;
    }
}

然后你像这样枚举控件

foreach (var tb in FindVisualChildren<TextBlock>(window))
{
    // do something with tb here
}

这篇关于按类型查找 WPF 窗口中的所有控件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！