How to enter the path to the folder?

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C#

file

folder

Hi,
I'm trying to create a path where I would save the newly created layers, but I have a problem with how to enter the path to the folder that contains the file I'm copying but I want to rename it. It occurred to me to cut it off, but it's always a different name.

For example, the path to the file is: C:\Users\Documents\ArcGIS\Projects\test\Klady.gdb
And I would need: C:\Users\Documents\ArcGIS\Projects\test\

But if it were:C:\Users\Documents\ArcGIS\Projects\bodyTest\testovaci.gdb
so the same Substring or Remove will no work

What I have tried:

Here I choose which folder I am copying:

private void hledatCestu_Click(object sender, RoutedEventArgs e)
        {
            using (var fbd = new FolderBrowserDialog())
            {
                DialogResult result = fbd.ShowDialog();

                if (result == System.Windows.Forms.DialogResult.OK && !string.IsNullOrWhiteSpace(fbd.SelectedPath))
                {
                    string[] files = Directory.GetFiles(fbd.SelectedPath);
                    Application.Current.Dispatcher.Invoke(() => { cestaText.Text = fbd.SelectedPath.ToString(); });
                    

                }
            }

        }

Here is a separate copy:

<pre lang="C#">protected async void OK_Click(object sender, RoutedEventArgs e)
        {
            MapView mapView = MapView.Active;
            await QueuedTask.Run(async () =>
            {
                Application.Current.Dispatcher.Invoke(() =>
                {
                    _cesta = cestaText.Text;
                    _vysledny = vyslednySystem.Text;
                });
                if (!Directory.Exists(_cesta))
                {
                    MessageBox.Show("Zadaná cesta neexistuje.");
                    Application.Current.Dispatcher.Invoke(() =>
                    {
                        cestaText.Text=String.Empty;
                    });
                }
                else
                {
                    var novaCesta = _cesta.Remove(_cesta.Length - 9);//here's the crop, which is functional but not multifunctional
                    object[] parameterList = {novaCesta, @"ETRS"};
                    await StartATask("management.CreateFileGDB", parameterList);
...

I will be happy for any advice and help

Thank you
David