Password TextBox in WPF

In .NET Framework 3.0 (WPF) Microsoft have removed the property of a TextBox, which specifies whether the textbox is Password or Normal type. But in replacement they’ve introduced a new control named PasswordBox which is very simple and intuitive to use. Here is a simple example:

XAML:

<PasswordBox x:Name="txtPassword"
ToolTip="Password"
PasswordChar="*"
/>

By default the PasswordChar is set to the big black dot from Windows XP style logon and.
In order to detect changes in the password you must handle the PasswordChanged event:

VB Codebehind:

Private Sub txtPassword_PasswordChanged(ByVal sender As System.Object _
, ByVal e As System.Windows.RoutedEventArgs _
) Handles txtPassword.PasswordChanged
'Validate input
End Sub

An in order to retrieve the typed password you just use the Password property of the PasswordBox control:

VB Codebehind:

Public Function IsAuthenticated() as Boolean
Return txtPassword.Password <> ""
End Function
14 replies
  1. Anonymous
    Anonymous says:

    you have to add the control manually, by going to
    Tools>Choose Toolbox Items…>.NET Framework Components>

    Check "Password Box", then you will be able to see this on the toolbox

    Reply

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