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WPF - Passwordbox
PasswordBox is a control that allows the user to enter masked passwords. When the user enters a password, it will be displayed as password characters. You can change the Password character by setting the PasswordChar property. The hierarchical inheritance of PasswordBox class is as follows −
Commonly Used Properties of PasswordBox Class
| Sr.No. | Property & Description |
|---|---|
| 1 |
InputScope Gets or sets the context for input used by this PasswordBox. |
| 2 |
InputScopeProperty Identifies the InputScope dependency property. |
| 3 |
IsPasswordRevealButtonEnabled Gets or sets a value that specifies whether the visual UI of the PasswordBox includes a button element that toggles showing or hiding the typed characters. In Windows 10 and later, use PasswordRevealMode instead. |
| 4 |
IsPasswordRevealButtonEnabledProperty Identifies the IsPasswordRevealButtonEnabled dependency property. |
| 5 |
MaxLength Gets or sets the maximum length for passwords to be handled by this PasswordBox. |
| 6 |
MaxLengthProperty Identifies the MaxLength dependency property. |
| 7 |
Password Gets or sets the password currently held by the PasswordBox. |
| 8 |
PasswordChar Gets or sets the masking character for the PasswordBox. |
| 9 |
PasswordCharProperty Identifies the PasswordChar dependency property. |
| 10 |
PasswordProperty Identifies the Password dependency property. |
| 11 |
PasswordRevealMode Gets or sets a value that specifies whether the password is always, never, or optionally obscured. |
| 12 |
PasswordRevealModeProperty Identifies the PasswordRevealMode dependency property. |
| 13 |
Resources Gets the locally defined resource dictionary. In XAML, you can establish resource items as child object elements of a frameworkElement.Resources property element, through XAML implicit collection syntax. (Inherited from FrameworkElement) |
Commonly Used Events of PasswordBox Class
| Sr.No. | Event & Description |
|---|---|
| 1 |
ContextMenuOpening Occurs when the system processes an interaction that displays a context menu. |
| 2 |
GotFocus Occurs when a UIElement receives focus. (Inherited from UIElement) |
| 3 |
PasswordChanged Occurs when the value of the Password property changes. |
| 4 |
Paste Occurs when text is pasted into the control. |
Below are the commonly used Methods of PasswordBox class.
| Sr.No. | Method & Description |
|---|---|
| 1 |
OnLostFocus Called before the LostFocus event occurs. (Inherited from Control) |
| 2 |
SelectAll Selects all the characters in the PasswordBox. |
| 3 |
SetBinding Attaches a binding to a FrameworkElement, using the provided binding object. (Inherited from FrameworkElement) |
| 4 |
SetValue Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject) |
The following example shows the PasswordBox, labels, and button. Here is the XAML code in which all these controls are created and initialized.
<Window x:Class = "PasswordBox.MainWindow"
xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
Title = "MainWindow" Height = "350" Width = "604">
<Grid >
<PasswordBox x:Name = "pwBox" Height = "35" Width = "200"
MaxLength = "8" Margin = "159,55,158,229" />
<Label Content = "Password" HorizontalAlignment = "Left" Margin = "108,61,0,0"
VerticalAlignment = "Top" Width = "70" />
<Button Content = "Ok" HorizontalAlignment = "Left" Margin = "406,64,0,0"
VerticalAlignment = "Top" Width = "75" Click = "Button_Click"/>
<Label Name = "statusText" HorizontalAlignment = "Left" Margin = "159,128,0,0"
VerticalAlignment = "Top" Width = "200" Height = "38"/>
</Grid>
</Window>
Here is the button click event implementation in C# in which the program compares if the entered password is wpf12345 then it will display the correct password message on the textblock.
using System.Windows;
namespace WPFPasswordBoxControl {
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window {
public MainWindow() {
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e) {
if (pwBox.Password.ToString() == "wpf12345")
statusText.Text = "Password Accepted";
else
statusText.Text = "Wrong Password";
}
}
}
When the above code is compiled and executed, it will produce the following window −
We recommend that you execute the above example code and try the other properties and events of PasswordBox class.