C#窗体实例：记事本

来源：互联网发布：统计学数据分析方法编辑：程序博客网时间：2024/05/22 03:38

用VS写记事本其实很简单，现成的控件现成的代码，一边打开一个电脑上的记事本，一边照着写菜单，然后编辑功能。VS里自带很多控件，能够直接使用来完成所要的功能。

运行效果如图：

在窗体中添加menuStrip控件来书写菜单：

在整个记事本软件中将会用到下列控件，都是一些比较常用的控件，就不用多说，主要写一下部分功能的代码：

1.新建

   private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)        {                        if (richTextBox1.Text != "")            {                if (bIsSave == false) //没有保存                {                    DialogResult result = MessageBox.Show("文件 无标题 的文字已改变。\n\n想保存文件吗？", "记事本", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning);                    if (result == DialogResult.Yes)                    {                        saveFileDialog1.FileName = "*.txt";                        saveFileDialog1.Filter = "文本文档(*.txt)|*.txt";                        saveFileDialog1.Title = "保存";                        if (saveFileDialog1.ShowDialog() == DialogResult.OK)                        {                            richTextBox1.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);                            filename = saveFileDialog1.FileName;                            this.Text = "无标题 - 记事本";                            richTextBox1.Clear();                        }                    }                    if (result == DialogResult.No)                    {                        richTextBox1.Clear();                    }                }                else                 {                    richTextBox1.Clear();                }            }        }

2.复制

  private void 复制CCtrlCToolStripMenuItem_Click(object sender, EventArgs e)        {              // richTextBox1.Copy();                 this.Cursor = Cursors.WaitCursor;                 string strTemp = richTextBox1.SelectedText;   //获取RichTextBox中选中的文字                  if (strTemp.Equals(""))     //Equals 方法确定两个对象是否相等                 return;                   Clipboard.Clear();//清除原有剪切板中内容                   Clipboard.SetText(strTemp);//将文字添加到剪切板中，还添加Object类型数据                                 this.Cursor = Cursors.Default;              }

3.打开

  private void 打开OCtrlOToolStripMenuItem_Click(object sender, EventArgs e)        {            openFileDialog1.FileName = "*.txt";            openFileDialog1.Filter = "文本文档(*.txt)|*.txt|所有文件|*.*";            if (openFileDialog1.ShowDialog() == DialogResult.OK)            {                StreamReader sr = new StreamReader(openFileDialog1.FileName, Encoding.Default);                richTextBox1.Text = sr.ReadToEnd();                sr.Close();            }            filename = openFileDialog1.FileName;            this.Text = Path.GetFileName(openFileDialog1.FileName)+" - 记事本";            bIsSave = true;        }

4.保存

 private void 保存SCtrlSToolStripMenuItem_Click(object sender, EventArgs e)        {            if (filename == "")            {                bIsSave = false;                saveFileDialog1.FileName = "*.txt";                saveFileDialog1.Filter = "文本文档(*.txt)|*.txt";                saveFileDialog1.Title = "保存";                if (saveFileDialog1.ShowDialog() == DialogResult.OK)                {                    richTextBox1.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);                    filename = saveFileDialog1.FileName;                    this.Text = "无标题 - 记事本";                    richTextBox1.Clear();                }                else                {                    richTextBox1.SaveFile(filename , RichTextBoxStreamType.PlainText);                }            }            bIsSave = true;        }

5.另存为

 private void 另存为ACtrlAToolStripMenuItem_Click(object sender, EventArgs e)        {                saveFileDialog1.FileName = "*.txt";                saveFileDialog1.Filter = "文本文档(*.txt)|*.txt";                saveFileDialog1.Title = "保存";                if (saveFileDialog1.ShowDialog() == DialogResult.OK)                {                    richTextBox1.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);                    filename = saveFileDialog1.FileName;                    this.Text = "无标题 - 记事本";                    richTextBox1.Clear();                }                bIsSave = true ;                  }

6.退出

 private void 退出XToolStripMenuItem_Click(object sender, EventArgs e)        {            if (richTextBox1.Text != "")            {                if (bIsSave == false)                {                    DialogResult result = MessageBox.Show("文件 无标题 的文字已改变。\n\n想保存文件吗？", "记事本", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning);                    if (result == DialogResult.Yes)                    {                        保存SCtrlSToolStripMenuItem_Click(sender, e);                    }                    else if (result == DialogResult.No)                    {                        this.Close();                    }                    else if (result == DialogResult.Cancel)                    {                    }                }            }            else                this.Close();            //Application.Exit();        }

7.打印

 private void 打印PToolStripMenuItem_Click(object sender, EventArgs e)        {                        printDialog1.Document = printDocument1;            printDialog1.ShowDialog();        }

8.页面设计

 //页面设计        private void 页面设置UToolStripMenuItem_Click(object sender, EventArgs e)        {            pageSetupDialog1.Document = printDocument1;            pageSetupDialog1.ShowDialog();        }

9.剪切

  private void 剪切TToolStripMenuItem_Click(object sender, EventArgs e)        {                 this.Cursor = Cursors.WaitCursor;                 string strTemp = richTextBox1.SelectedText;                 if (strTemp.Equals(""))                       return;                   Clipboard.Clear();                   richTextBox1.Cut();                   this.Cursor = Cursors.Default;                            }

10.撤销

  private void 撤销ToolStripMenuItem_Click(object sender, EventArgs e)        {               this.Cursor = Cursors.WaitCursor;                 richTextBox1.Undo();                 this.Cursor = Cursors.Default;                     }

11.删除

     private void 删除LDelToolStripMenuItem_Click(object sender, EventArgs e)        {            this.richTextBox1.Undo();        }

12.自动换行

  private void 自动换行WToolStripMenuItem_Click(object sender, EventArgs e)        {            if (自动换行WToolStripMenuItem.Checked)            {                自动换行WToolStripMenuItem.Checked = false;                richTextBox1.WordWrap = false ;            }            else            {                自动换行WToolStripMenuItem.Checked = true;                richTextBox1.WordWrap = true ;            }        }

13.字体

   private void 字体FToolStripMenuItem_Click(object sender, EventArgs e)        {            fontDialog1.ShowDialog();        }

14.全选

   private void 全选AToolStripMenuItem_Click(object sender, EventArgs e)        {            richTextBox1.Focus();//设置定位到当前活动的RichTextBox,这一句很重要,否则它不能正确执行             richTextBox1.SelectAll();        }

15.时间日期

  private void 时间日期ToolStripMenuItem_Click(object sender, EventArgs e)        {            //System.DateTime currentTime = new System.DateTime();            string Time;            Time = (System.DateTime.Now).ToString ();            richTextBox1.Text = Time;        }

16.查找

 private void 查找FCtrlFToolStripMenuItem_Click(object sender, EventArgs e)        {            Find frmFind = new Find(richTextBox1);            frmFind.Show(this);        }

17.查找下一个

private void 查找下一个ToolStripMenuItem_Click(object sender, EventArgs e)        {            Find frmFind = new Find(richTextBox1);            frmFind.Show(this);        }

18.替换

  private void 替换RToolStripMenuItem_Click(object sender, EventArgs e)        {            Replace frmReplace = new Replace(richTextBox1 );            frmReplace.Show(this);        }

19.转到

  private void 转到GToolStripMenuItem_Click(object sender, EventArgs e)        {            zhuan frmzhuan = new zhuan(richTextBox1);            frmzhuan.Show(this);        }

0 0