Winforms c# - 将焦点设置为TabPage的第一个子控件

private void SetFocusToFirstControl(TabPage tabPage)
{
    Control firstControl = null;

    foreach (Control control in tabPage.Controls)
    {
        if (control.CanFocus)
        {
            firstControl = control;
            break;
        }
    }

    if (firstControl != null)
    {
        firstControl.Focus();
    }
}

SetFocusToFirstControl(tabPage1);