Hey I am trying to create an folder browser that will allow you to select the folders and files and "open" them so the path get saved into a richtextbox.

this is my code.
Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;


namespace Windows_Tools
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private Hashtable extendees;

        private void btn_backup_Click_1(object sender, EventArgs e)
        {
            FolderBrowserDialog f_browser = new FolderBrowserDialog();
            DialogResult result = f_browser.ShowDialog();
            Control btn = sender as Control;
            extendees = new Hashtable();
            if (result == DialogResult.OK)
            {
                foreach (DictionaryEntry ent in extendees)
                {
                    if (ent.Value == btn)
                    {
                        Control target = ent.Key as Control;
                        test.Text = f_browser.SelectedPath;
                        return;
                    }
                }
            }
            else
            {
                MessageBox.Show("Operation was aborted", "Error:");
            }
        }
    }
}
the open thingy works


I need your help to get it to copy the path into my richtextbox.