使用箭头键增加文本框中的值

Question

我尝试使用箭头键增加文本框中的值。我正在使用wfp，c＃

if (ke.Key == Key.Up || ke.Key == Key.Down)
    ke.Handled = false;// need a method in here

如何使用箭头键增加文本框中的值？

Answer 1

WPF中的texbox

 <TextBox Name="textbox1" HorizontalAlignment="Left" Text="0" Height="23" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" Margin="154,138,0,0" PreviewKeyDown="TextBox_KeyDown"/>

代码隐藏

private void TextBox_KeyDown(object sender, KeyEventArgs e)
{
    int currentNumber = Convert.ToInt32(textbox1.Text);
    if (e.Key == Key.Up)
    {

        textbox1.Text = (currentNumber + 1).ToString();
    }
    else if (e.Key == Key.Down)
    {
        textbox1.Text = (currentNumber - 1).ToString();
    }
}