How can I add KeyUp event for my UserControl? - xaml

Question

I have a user control that working like WatermarkPasswordBox and I want to add KeyUp event for my user control's PasswordBox's Key Up event. How can I do it?
<UserControl
x:Class="Windows8.StoreApp.Common.CustomControls.WatermarkPasswordTextBox"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:Windows8.StoreApp.Common.CustomControls"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="400">
<Grid>
<PasswordBox x:Name="passwordB" GotFocus="PasswordBox_GotFocus" LostFocus="PasswordBox_LostFocus" PasswordChanged="passwordB_PasswordChanged" Style="{StaticResource AkbankControlStyleWatermarkPasswordBoxLoginFormInputPasswordBox}"></PasswordBox>
<TextBlock x:Name="lblWaterMark" Tapped="lblWaterMark_Tapped" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="10,4,10,4" Opacity="0.8" FontFamily="Segoe UI" FontSize="16" Foreground="#FF8E8E8E" FontWeight="SemiBold"></TextBlock>
</Grid>
public WatermarkPasswordTextBox()
{
this.InitializeComponent();
}
private void PasswordBox_GotFocus(object sender, RoutedEventArgs e)
{
lblWaterMark.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
}
private void PasswordBox_LostFocus(object sender, RoutedEventArgs e)
{
if ((sender as PasswordBox).Password.Length == 0)
{
lblWaterMark.Visibility = Windows.UI.Xaml.Visibility.Visible;
}
}
private void passwordB_PasswordChanged(object sender, RoutedEventArgs e)
{
if ((sender as PasswordBox).Password.Length != 0)
{
lblWaterMark.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
}
}
private void lblWaterMark_Tapped(object sender, TappedRoutedEventArgs e)
{
lblWaterMark.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
passwordB.Focus(Windows.UI.Xaml.FocusState.Pointer);
}
private string _watermark=String.Empty;
public string Watermark
{
get
{
_watermark = lblWaterMark.Text;
return _watermark;
}
set
{
SetProperty<string>(ref _watermark, value, "Watermark");
lblWaterMark.Text = _watermark;
}
}
private int _lenghtMax;
public int LenghtMax
{
get
{
if (passwordB != null)
{
_lenghtMax = passwordB.MaxLength;
return _lenghtMax;
}
else
{
return 0;
}
}
set
{
if (passwordB != null)
{
SetProperty<int>(ref _lenghtMax, value, "LenghtMax");
passwordB.MaxLength = _lenghtMax;
}
}
}
private string _passText = String.Empty;
public string PassText
{
get
{
if (passwordB != null)
{
_passText = passwordB.Password;
return _passText;
}
else
{
return String.Empty;
}
}
set
{
if (passwordB != null)
{
SetProperty<string>(ref _passText, value, "PassText");
passwordB.Password = _passText;
passwordB_PasswordChanged(passwordB, null);
}
else
{
SetProperty<string>(ref _passText, value, "PassText");
}
}
}
public event PropertyChangedEventHandler PropertyChanged;
private bool SetProperty<T>(ref T storage, T value, [CallerMemberName] String propertyName = null)
{
if (Equals(storage, value)) return false;
storage = value;
OnPropertyChanged(propertyName);
return true;
}
private void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
var handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
I want to use like this;
and this Key_Up will equal to mycontrol's PasswordBox' key up event.
Thanks.

Answer 1

public event KeyEventHandler RelayedKeyUp
{
add
{
passwordB.KeyUp += value;
}
remove
{
passwordB.KeyUp -= value;
}
}