wpf 方向键控制控件 keydown
答案:1 悬赏:0 手机版
解决时间 2021-03-12 16:42
- 提问者网友：皆是孤独
- 2021-03-12 13:07
wpf 方向键控制控件 keydown
最佳答案
- 五星知识达人网友：英雄的欲望
- 2021-03-12 14:03
private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
TextBox txt = sender as TextBox;
if (txt.Text.Length <= 10) //控制字符长度
{
//屏蔽非法按键
if ((e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9) || e.Key == Key.Decimal || e.Key.ToString() == "Tab")
{
if (txt.Text.Contains(".") && e.Key == Key.Decimal)
{
e.Handled = true;
return;
}
e.Handled = false;
}
else if (((e.Key >= Key.D0 && e.Key <= Key.D9) || e.Key == Key.OemPeriod || e.Key == Key.Back || e.Key == Key.Delete) && e.KeyboardDevice.Modifiers != ModifierKeys.Shift)
{
if (txt.Text.Contains(".") && e.Key == Key.OemPeriod)
{
TextBox txt = sender as TextBox;
if (txt.Text.Length <= 10) //控制字符长度
{
//屏蔽非法按键
if ((e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9) || e.Key == Key.Decimal || e.Key.ToString() == "Tab")
{
if (txt.Text.Contains(".") && e.Key == Key.Decimal)
{
e.Handled = true;
return;
}
e.Handled = false;
}
else if (((e.Key >= Key.D0 && e.Key <= Key.D9) || e.Key == Key.OemPeriod || e.Key == Key.Back || e.Key == Key.Delete) && e.KeyboardDevice.Modifiers != ModifierKeys.Shift)
{
if (txt.Text.Contains(".") && e.Key == Key.OemPeriod)
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