Hello,

I have a richtextbox that I am to be able to type in, I want to be able to select the text and flip the case of the selected string. So... "hello world" would magically be "HELLO WORLD". Here is what I currently have, it does not work, but it does not spit any errors at me. Any ideas?

Code:
   private void lowerCaseToolStripMenuItem_Click(object sender, EventArgs e)
   {
      RichTextBox rtb = (RichTextBox)tabs.SelectedTab.Controls[0]; ;
      rtb.SelectedText.ToLower();
   }
Thanks