title: C# Permanently Add and Save item to combobox
body: <p>everybody!</p>
  
  <p>I have collection of items in combobox's properties. And I want to add new item in my combobox by writing text in combobox and then use button event:</p>
  
  <pre><code>private void button2_Click_1(object sender, EventArgs e)
      {
          cbx_unix_dir.Items.Add(cbx_unix_dir.Text);
      }
  </code></pre>
  
  <p>But in next time of starting my programm - my added item doesn't exist in combobox. What do I wrong? I need all added items have been saved in my combobox for ever. May be problem in method InitializeComponents()? May be I have to add event before it?
  Thank you very much.</p>