記事本的一些簡單操作

          在日常生活中，我們經常使用記事本， 對記事本的操作不外乎就那麼幾種：打開、刪除、字體設置等；我要實現的功能主要有：加載記事本（打開已有的記事本），另存爲，字體設置、背景設置等四種操作；其實，實現也很簡單，就那麼幾十行代碼；並且大都是通過打開相應的對話框進行操作，下面是對這幾個功能的簡單實現： 

   private void 打開OToolStripMenuItem_Click(object sender, EventArgs e)
        {///打開文檔；
          OpenFileDialog ofd = new OpenFileDialog();
            ofd.InitialDirectory = "c:\\";
            ofd.RestoreDirectory = true;
            ofd.Filter = "txt files(*.txt)|*.txt |RTF Files|*.rtf|All files(*.*)|*.*";
         ///注意：這前面的代碼只可以放在對話框彈出以前，否則沒有什麼作用了!
            if (ofd.ShowDialog() != DialogResult.OK)
            {

                return;
            }
          
            richTextBox1.LoadFile(ofd.FileName, RichTextBoxStreamType.PlainText);
        }

        private void 另存爲GToolStripMenuItem_Click(object sender, EventArgs e)
        {
            SaveFileDialog sfd = new SaveFileDialog();
              sfd.FilterIndex = 2;
            sfd.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*"; ///文件類型；
            sfd.RestoreDirectory = true;///是否還原開始打開的目錄；
            if(sfd.ShowDialog()!=DialogResult.OK){
            return;
           
            }
            ///直接進行操作；
            ///
        
            richTextBox1.SaveFile(sfd.FileName, RichTextBoxStreamType.PlainText); ///文件名，保存的文件格式;
            MessageBox.Show("保存成功了");

        }

        private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if(DialogResult.OK==MessageBox.Show("確定要退出嗎？","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Question))
            {
           
                this.Close();  ///退出系統；
            }
        }

        private void 字體FToolStripMenuItem_Click(object sender, EventArgs e)
        { ///字體設置；

            FontDialog ftd = new FontDialog();
            ftd.ShowColor = true;///是否獲取選定項的顏色數據；
                                 ///
            if(ftd.ShowDialog()!=DialogResult.OK){

                return;
           
            }
            richTextBox1.SelectionFont = ftd.Font;///獲取選定的字體設置；
                                                  ///
            richTextBox1.SelectionColor = ftd.Color;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

            this.skinEngine1.SkinFile = "Calmness.ssk";  ///窗體樣式的重新設置；
        }

        private void 背景KToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ColorDialog cfd = new ColorDialog();
            cfd.Color = richTextBox1.BackColor;/// 背景顏色;
                                               ///
            cfd.ShowDialog();
            richTextBox1.BackColor = cfd.Color;
        }