#Wpf retrieve text from passwordbox password
#Wpf retrieve text from passwordbox free

To modify the existing password's data was not included intentionally. While the workaround 'works' - the ability

#Wpf retrieve text from passwordbox password

The goal of this operation was to simply identify the presense of a password consisting of N characters. The user should be allowed to enter a new password, or use the existing password as is. Thanks for the response! I originally checked the thread every day, but after a few days passed without a response, I decided that it just slipped under everyones radar and was too far gone to hope to get any feedback. Short charAsInt = Marshal.ReadInt16(passwordPtr, offset) Ĭlipboard.SetData('UnicodeText', (char)charAsInt) PasswordPtr = Marshal.SecureStringToGlobalAllocUnicode(password) įor (int offset = 0 offset < numBytes offset += UnicodeEncoding.CharSize) Private void InitPasswordBox(SecureString password) FAIL - Compiles, but SecurePassword changes are not reflected in Marshal.ZeroFreeGlobalAllocUnicode(passwordPtr) IntPtr passwordPtr = Marshal.SecureStringToGlobalAllocUnicode(password) Ĭtrl_Password.Password = Marshal.PtrToStringUni(passwordPtr) However, it requires exposing the entire password in the clear private void InitPasswordBox(SecureString password) SUCCESS - Changes are reflected in the control. Thus far, I have tried the following solutions: NET security to realize when I am doing something stupid.

I opted for #1 simply because I worry I don't know enough about. Create a new control that handles my requirements in addition to the manipulation of the secure password. Create a workaround so that I can continue to use the PasswordBox.Ģ. Via a securestring and then retrieve it as a securestring before moving on - I want the client to be as ignorant to the password as possible. I simply want to assign the PasswordBox's initial state So, to make sure I haven't given the wrong idea - this has nothing to do with data binding (don't need it). Unfortunately, the PasswordBox doesn't appear to support pre-existing states - so I have had some trouble implementing this requirement (and be certain I am not doing something stupid). Just as important, it enables him to to change the informationīefore moving on. That I could assign the SecurePassword when creating PasswordBox which would give the user visibility to the fact a password was retrieved and he can continue to use it if he wants. However, I ran into a snag when I tried to integrate a login dialog so that the user could confirm their credentials before going forward. I had (incorrectly) assumed I should be able to pass the SecureStrings between components as quickly and with as little interaction as possible. Length, the client has no knowledge of the data contained in the secure string.

#Wpf retrieve text from passwordbox free

Retrieval/storage of passwords in the credential cache, as well as the creation of the windowsidentity that is used for impersonation/SQL access. I have no need to view/access passwords in free text - so, ideally, other than knowing a password I rely on SecureStrings for this operation - from the Private Sub OnClick(ByVal senter As Object, ByVal e As RoutedEventArgs)ĭim sSelectedText As String = tbSelectSomeText.I am working on a dialog to enable users to supply logon credentials for access to SQL in an untrusted domain. String sSelectedText = tbSelectSomeText.SelectedText void OnClick(object sender, RoutedEventArgs e)

The following C# example shows an OnClick event handler for the button defined in the XAML for this example. The particular circumstances by which the text selection is retrieved (clicking a button), as well as the action taken with that selection (copying the text selection to a string), can easily be modified to accommodate a wide variety of scenarios.

When the user clicks the button, the OnClick method copies any selected text in the textbox into a string. In this example, a button with an associated Click event handler is used to retrieve the text selection. The following Extensible Application Markup Language (XAML) example shows the definition of a TextBox control that contains some text to select, and a Button control with a specified OnClick method. This example shows one way to use the SelectedText property to retrieve text that the user has selected in a TextBox control.