[英]Custom Control in Windows Phone: Creating Numeric PasswordBox
I have a custom TextBlock with my custom validation, but I also need to use a Password Box functionality to.我有一个带有自定义验证的自定义 TextBlock,但我还需要使用密码框功能。 How can I make a custom Numeric PasswordBox?
如何制作自定义数字密码框?
Just add a PasswordBox to your XAML like so:只需将 PasswordBox 添加到您的 XAML,如下所示:
<PasswordBox x:Name="MyPasswordBox" KeyDown="MyPasswordBox_KeyDown" />
And then use the KeyDown event to remove all key presses that are not from 0 to 9, like so:然后使用 KeyDown 事件删除所有不是从 0 到 9 的按键,如下所示:
private void MyPasswordBox_KeyDown(object sender, KeyEventArgs e)
{
e.Handled = (e.Key < Key.D0 || e.Key > Key.D9);
}
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