在Silverlight中查找所有TextBox控件的通用方法

using System.Windows;
using System.Windows.Controls;
using System.Collections.Generic;

public static class UIHelper
{
    public static List<TextBox> GetAllTextBoxes(DependencyObject parent)
    {
        List<TextBox> textBoxes = new List<TextBox>();
        int numChildren = VisualTreeHelper.GetChildrenCount(parent);
        for (int i = 0; i < numChildren; i++)
        {
            DependencyObject child = VisualTreeHelper.GetChild(parent, i);
            TextBox textBox = child as TextBox;
            if (textBox != null)
            {
                textBoxes.Add(textBox);
            }
            else
            {
                List<TextBox> childTextBoxes = GetAllTextBoxes(child);
                textBoxes.AddRange(childTextBoxes);
            }
        }
        return textBoxes;
    }
}

List<TextBox> textBoxes = UIHelper.GetAllTextBoxes(myGrid);