如何访问C#面板中动态添加的用户控件的控件？

// 假设动态添加的用户控件的ID为"dynamicControl"
string dynamicControlID = "dynamicControl";

// 查找指定ID的控件
Control dynamicControl = FindControlRecursive(panel1, dynamicControlID);

// 递归查找指定ID的控件
private Control FindControlRecursive(Control parentControl, string controlID)
{
    Control targetControl = parentControl.FindControl(controlID);

    if (targetControl == null)
    {
        foreach (Control childControl in parentControl.Controls)
        {
            targetControl = FindControlRecursive(childControl, controlID);
            if (targetControl != null)
            {
                break;
            }
        }
    }

    return targetControl;
}