WPF - Passwordbox


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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 −

Hierarchical of Passwordbox

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 −

Output of Passwordbox

We recommend that you execute the above example code and try the other properties and events of PasswordBox class.

wpf_controls.htm
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