public bool Delete()
{
if (string.IsNullOrEmpty(Target))
{
throw new InvalidOperationException("Target must be specified to delete a credential.");
}
StringBuilder target = string.IsNullOrEmpty(Target) ? new StringBuilder() : new StringBuilder(Target);
bool result = CREDUI.CredDelete(target, CREDUI.CredentialType.Generic, 0);
return(result);
}
/// <summary>Returns a DialogResult indicating the user action.</summary>
/// <param name="owner">The System.Windows.Forms.IWin32Window the dialog will display in front of.</param>
/// <remarks>
/// Sets the name, password and SaveChecked accessors to the state of the dialog as it was dismissed by the user.
/// </remarks>
private DialogResult ShowDialog(IWin32Window owner)
{
// set the api call parameters
StringBuilder name = new StringBuilder(CREDUI.MAX_USERNAME_LENGTH);
name.Append(this.Name);
StringBuilder password = new StringBuilder(CREDUI.MAX_PASSWORD_LENGTH);
password.Append(this.Password);
int saveChecked = Convert.ToInt32(this.SaveChecked);
CREDUI.INFO info = GetInfo(owner);
CREDUI.FLAGS flags = GetFlags();
// make the api call
CREDUI.ReturnCodes code = CREDUI.PromptForCredentials(
ref info,
this.Target,
IntPtr.Zero, 0,
name, CREDUI.MAX_USERNAME_LENGTH,
password, CREDUI.MAX_PASSWORD_LENGTH,
ref saveChecked,
flags
);
// clean up resources
if (this.Banner != null)
{
GDI32.DeleteObject(info.hbmBanner);
}
// set the accessors from the api call parameters
this.Name = name.ToString();
this.Password = password.ToString();
this.SaveChecked = Convert.ToBoolean(saveChecked);
return(GetDialogResult(code));
}
/// <summary>Confirmation action to be applied.</summary>
/// <param name="value">True if the credentials should be persisted.</param>
public void Confirm(bool value)
{
CREDUI.ReturnCodes confirmCredentials = CREDUI.ConfirmCredentials(this.Target, value);
switch (confirmCredentials)
{
case CREDUI.ReturnCodes.NO_ERROR:
break;
case CREDUI.ReturnCodes.ERROR_INVALID_PARAMETER:
// for some reason, this is encountered when credentials are overwritten
break;
case CREDUI.ReturnCodes.ERROR_NOT_FOUND:
// for some reason, this is encountered when dialog was not shown
break;
default:
throw new ApplicationException("Credential confirmation failed. " + confirmCredentials);
}
}