/// <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(Name);
StringBuilder password = new StringBuilder(CREDUI.MAX_PASSWORD_LENGTH);
password.Append(Password);
int saveChecked = Convert.ToInt32(SaveChecked);
CREDUI.INFO info = GetInfo(owner);
CREDUI.FLAGS flags = GetFlags();
// make the api call
CREDUI.ReturnCodes code = CREDUI.PromptForCredentials(ref info, Target, IntPtr.Zero, 0, name, CREDUI.MAX_USERNAME_LENGTH, password, CREDUI.MAX_PASSWORD_LENGTH, ref saveChecked, flags);
// clean up resources
if (Banner != null)
{
Win32.DeleteObject(info.hbmBanner);
}
// set the accessors from the api call parameters
Name = name.ToString();
Password = password.ToString();
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(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;
default:
throw new ApplicationException("Credential confirmation failed. " + confirmCredentials);
}
}
/// <summary>Returns a DialogResult from the specified code.</summary>
/// <param name="code">The credential return code.</param>
private DialogResult GetDialogResult(CREDUI.ReturnCodes code)
{
DialogResult result;
switch (code)
{
case CREDUI.ReturnCodes.NO_ERROR:
result = DialogResult.OK;
break;
case CREDUI.ReturnCodes.ERROR_CANCELLED:
result = DialogResult.Cancel;
break;
case CREDUI.ReturnCodes.ERROR_NO_SUCH_LOGON_SESSION:
throw new ApplicationException("No such logon session.");
break;
case CREDUI.ReturnCodes.ERROR_NOT_FOUND:
throw new ApplicationException("Not found.");
break;
case CREDUI.ReturnCodes.ERROR_INVALID_ACCOUNT_NAME:
throw new ApplicationException("Invalid account name.");
break;
case CREDUI.ReturnCodes.ERROR_INSUFFICIENT_BUFFER:
throw new ApplicationException("Insufficient buffer.");
break;
case CREDUI.ReturnCodes.ERROR_INVALID_PARAMETER:
throw new ApplicationException("Invalid parameter.");
break;
case CREDUI.ReturnCodes.ERROR_INVALID_FLAGS:
throw new ApplicationException("Invalid flags.");
break;
default:
throw new ApplicationException("Unknown credential result encountered.");
break;
}
return(result);
}
