/// <summary>
/// Sets the location (KNOWNFOLDERID) from which to begin browsing a namespace in the navigation pane.
/// </summary>
/// <exception cref="FileNotFoundException">navigationRoot KNOWNFOLDERID not found.</exception>
/// <exception cref="COMException">See HRESULT value for more details.</exception>
public void SetNavigationRoot(Guid navigationRoot)
{
var shellItem = ComHelper.ShellItemFromKnownFolder(navigationRoot);
var fileDialog2 = MarshalHelper.QueryInterface <IFileDialog2>(_dialog);
fileDialog2.SetNavigationRoot(shellItem);
Marshal.ReleaseComObject(fileDialog2);
Marshal.ReleaseComObject(shellItem);
}
/// <summary>
/// Sets the text of the Cancel button.
/// </summary>
/// <exception cref="ArgumentException">cancelButtonLabel cannot be null, empty or only white-space characters.</exception>
/// <exception cref="COMException">See HRESULT value for more details.</exception>
public void SetCancelButtonLabel(string cancelButtonLabel)
{
if (string.IsNullOrWhiteSpace(cancelButtonLabel))
{
throw new ArgumentException(NullOrWhiteSpaceExceptionMessage, nameof(cancelButtonLabel));
}
var fileDialog2 = MarshalHelper.QueryInterface <IFileDialog2>(_dialog);
fileDialog2.SetCancelButtonLabel(cancelButtonLabel);
Marshal.ReleaseComObject(fileDialog2);
}
