title: How do I show the name of the current open file in the Form title?
body: <p>I'm making a text editor and I'd like to display the name of the current open file in the Form title (like Notepad does where it says "Untitled - Notepad" or " "File - Notepad").</p>
  
  <p>I'm assuming this is done working with the SaveFileDialog and OpenFileDialog, so I'll post my current code.</p>
  
  <p>OpenFile:</p>
  
  <pre><code>  private void OpenFile()
          {
              NewFile();
              OpenFileDialog ofd = new OpenFileDialog();
              ofd.Title = "Open File";
              ofd.FileName = "";
              ofd.Filter = "Rich Text Files (*.rtf)|*.rtf|Text Document (*.txt)|*.txt|Microsoft Word Document (*.doc)|*.doc|Hypertext Markup Language Document (*.html)|*.html";
              if (ofd.ShowDialog() != DialogResult.OK) return;
              StreamReader sr = null;
              try
              {
                  sr = new StreamReader(ofd.FileName);
                  this.Text = string.Format("{0} - Basic Word Processor", ofd.FileName);
                  richTextBoxPrintCtrl1.Text = ofd.FileName;
                  richTextBoxPrintCtrl1.Text = sr.ReadToEnd();
                  filepath = ofd.FileName;
                  richTextBoxPrintCtrl1.LoadFile(fileName, RichTextBoxStreamType.RichText);
  
              }
              catch 
              { 
              }
              finally
              {
                  if (sr != null) sr.Close();
              }
  </code></pre>
  
  <p>SaveFile</p>
  
  <pre><code>private void SaveFileAs()
          {
              SaveFileDialog sfdSaveFile = new SaveFileDialog();
              sfdSaveFile.Title = "Save File";
              sfdSaveFile.FileName = "Untitled";
              sfdSaveFile.Filter = "Rich Text Files (*.rtf)|*.rtf|Text Document (*.txt)|*.txt|Microsoft Word Document (*.doc)|*.doc|Hypertext Markup Language Document (*.html)|*.html";
              if (sfdSaveFile.ShowDialog() == DialogResult.OK)
                  try
                  {
                      filepath = sfdSaveFile.FileName;
                      SaveFile();
                      this.Text = string.Format("{0} - Basic Word Processor", sfdSaveFile.FileName);
                  }
                  catch (Exception exc)
                  {
  
                  }
  
  
  void SetWindowTitle(string fileName) {
      this.Text = string.Format("{0} - Basic Text Editor", System.IO.Path.GetFileNameWithoutExtension(OpenFileDialog.Filename));
  </code></pre>
  
  <p>How can I get the file name and put it in the Form's title (like Notepad does where it has the name of the file followed by the name of the text editor).</p>