Question

Is there a way to using a dialog window to get the folder path without name file?

Answer 1

Check the FolderBrowserDialog

// Bring up a dialog to chose a folder path in which to open or save a file.
private void folderMenuItem_Click(object sender, System.EventArgs e)
{
    var folderBrowserDialog1 = new FolderBrowserDialog();

    // Show the FolderBrowserDialog.
    DialogResult result = folderBrowserDialog1.ShowDialog();
    if( result == DialogResult.OK )
    {
        string folderName = folderBrowserDialog1.SelectedPath;
        ... //Do your work here!
    }
}