1.代码页需要在键盘按下事件中对输入文字进行筛选，代码如下：
private void tbxGoToPage_PreviewKeyDown(object sender, KeyEventArgs e)
{
Console.WriteLine("key_value={0}", e.Key);
if ((e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9) ||
(e.Key >= Key.D0 && e.Key <= Key.D9) ||
e.Key == Key.Back ||
e.Key == Key.Left || e.Key == Key.Right)
{
if (e.KeyboardDevice.Modifiers != ModifierKeys.None)
{
e.Handled = true;
}
}
else
{
e.Handled = true;
}
}
pr
