BinaryFileSchemaGUI.BFSGUI.LoadGrammar C# (CSharp) Method

        private void LoadGrammar( string filename )
        {
            if (!File.Exists(filename))
                return;

            StreamReader reader = new StreamReader(filename);
            string source = reader.ReadToEnd();
            richTextBox.Text = source;
            reader.Close();
            richTextBox.Select(0, 0);
            openFile = filename;
            toolSaveSchema.Enabled = true;
        }