/// <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.MaxUsernameLength);
name.Append(this.Name);
StringBuilder password = new StringBuilder(Credui.MaxPasswordLength);
password.Append(this.Password);
int saveChecked = Convert.ToInt32(this.SaveChecked);
Credui.Info info = this.GetInfo(owner);
Credui.Flags flags = this.GetFlags();
// make the api call
Credui.ReturnCodes code = Credui.PromptForCredentials(
ref info,
this.Target,
IntPtr.Zero, 0,
name, Credui.MaxUsernameLength,
password, Credui.MaxPasswordLength,
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(CredentialsDialog.GetDialogResult(code));
}
/// <summary>Returns a DialogResult from the specified code.</summary>
/// <param name="code">The credential return code.</param>
private static DialogResult GetDialogResult(Credui.ReturnCodes code)
{
DialogResult result;
switch (code)
{
case Credui.ReturnCodes.NoError:
result = DialogResult.OK;
break;
case Credui.ReturnCodes.ErrorCancelled:
result = DialogResult.Cancel;
break;
case Credui.ReturnCodes.ErrorNoSuchLogonSession:
throw new ApplicationException("No such logon session.");
case Credui.ReturnCodes.ErrorNotFound:
throw new ApplicationException("Not found.");
case Credui.ReturnCodes.ErrorInvalidAccountName:
throw new ApplicationException("Invalid account name.");
case Credui.ReturnCodes.ErrorInsufficientBuffer:
throw new ApplicationException("Insufficient buffer.");
case Credui.ReturnCodes.ErrorInvalidParameter:
throw new ApplicationException("Invalid parameter.");
case Credui.ReturnCodes.ErrorInvalidFlags:
throw new ApplicationException("Invalid flags.");
default:
throw new ApplicationException("Unknown credential result encountered.");
}
return(result);
}