Your best off just creating your own user control.
The xaml would look something like:
<Grid x:Name="LayoutRoot">
<TextBox x:Name="PasswordTextBox" InputScope="Number" MaxLength="{Binding MaxLength, ElementName=UserControl}" KeyUp="PasswordTextBox_KeyUp"/>
</Grid>
and the code behind could be something like:
public partial class NumericPasswordBox : UserControl
{
#region Password
public string Password
{
get { return (string)GetValue(PasswordProperty); }
set { SetValue(PasswordProperty, value); }
}
// Using a DependencyProperty as the backing store for Password. This enables animation, styling, binding, etc...
public static readonly DependencyProperty PasswordProperty =
DependencyProperty.Register("Password", typeof(string), typeof(NumericPasswordBox), new PropertyMetadata(null));
#endregion
#region MaxLength
public int MaxLength
{
get { return (int)GetValue(MaxLengthProperty); }
set { SetValue(MaxLengthProperty, value); }
}
// Using a DependencyProperty as the backing store for MaxLength. This enables animation, styling, binding, etc...
public static readonly DependencyProperty MaxLengthProperty =
DependencyProperty.Register("MaxLength", typeof(int), typeof(NumericPasswordBox), new PropertyMetadata(100));
#endregion
public NumericPasswordBox()
{
InitializeComponent();
}
private void PasswordTextBox_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
{
Password = PasswordTextBox.Text;
//replace text by *
PasswordTextBox.Text = Regex.Replace(Password, @".", "●");
//take cursor to end of string
PasswordTextBox.SelectionStart = PasswordTextBox.Text.Length;
}
}
You can customize all you want from then on however you wish, using dependency properties like MaxLength, shown in the example.
