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   源码介绍

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C#记事本程序

using System;
using System.Collections; 
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Text;
using System.Linq;
using System.Text;
using System.IO;
using System.Windows.Forms;

namespace Notepad
{
    public partial class MainForm : DevComponents.DotNetBar.Office2007RibbonForm
    {
        //定义文件操作类
        private string fileURL = "";
        private bool change;
        private string Filter = "文本文件(*.txt)|*.txt";
        private Font font;
        private FileInfo fileInfo;
        private string[] fontStyle = new string[4] {"","","",""};
        private Color color;
        public MainForm()
        {
            InitializeComponent();
        }
        //加载处理
        private void MainForm_Load(object sender, EventArgs e)
        {
            LineColAndSum();
            this.richTextBox1.AllowDrop = true;
            this.richTextBox1.DragEnter  = new DragEventHandler(RichTextBox1_DragEnter);
            //this.richTextBox1.DragDrop  = new DragEventHandler(RichTextBox1_DragDrop);
            font = richTextBox1.Font;
            color = richTextBox1.ForeColor;
            boldButton.Checked = false;
            ltalicButton.Checked = false;
            unLineButton.Checked = false;
            stLineButton.Checked = false;
            fontLeftButton_Click(sender, e);
            ControlChanged();
            fontRightButton.Image.RotateFlip(RotateFlipType.Rotate180FlipY);
            GetFontNames();
            GetFontSize();
            showFile_Message();
            change = false;
        }
        //获取系统字体和样式
        private void GetFontNames()
        {
            FontFamily[] fontFamilies;
            fontNames.Items.Clear();
            InstalledFontCollection installedFontCollection = new InstalledFontCollection();
            fontFamilies = installedFontCollection.Families;
            int count = fontFamilies.Length;
            for (int j = 0; j < count;   j)
            {
                fontNames.Items.Add(fontFamilies[j].Name);
            }
            fontNames.SelectedItem = richTextBox1.Font.Name;
        }
        //字号初始化
        private void GetFontSize()
        {
            for (float i = 8; i < 48; i  )
            {
                fontSize.Items.Add(i);
            }
            fontSize.SelectedItem = richTextBox1.Font.Size;
        }
        //文本框格式的显示
        private void showFont()
        {
            float size = float .Parse((font.Size * this.sliderItem1.Value / 100).ToString());
            this.richTextBox1.Font = new Font(font.Name, size,font.Style);
            this.richTextBox1.ForeColor = color;
        }
        //统计字数和行列定位
        private void LineColAndSum()
        {
            int index = richTextBox1.GetFirstCharIndexOfCurrentLine();//得到当前行第一个字符的索引
            int line = richTextBox1.GetLineFromCharIndex(index)   1;//得到当前行的行号,从0开始，习惯是从1开始，所以 1.
            int col = richTextBox1.SelectionStart - index   1;//.SelectionStart得到光标所在位置的索引 减去 当前行第一个字符的索引 = 光标所在的列数（从0开始)
            int sum = richTextBox1.Text.Length;
            labelItemLnCh.Text = "行："   line   "列："   col   "总字数："   sum;
        }
        //控件检测
        private void ControlChanged()
        {
            //backButton检测
            if (richTextBox1.CanUndo)
                backButton.Enabled = true;
            else
                backButton.Enabled = false;
            //redoButton检测
            if (richTextBox1.CanRedo)
                redoButton.Enabled = true;
            else
                redoButton.Enabled = false;
        }
        //文本发生变化
        private void TextChanged(object sender, EventArgs e)
        {
            change = true;
            LineColAndSum();
            ControlChanged();
        }
        //菜单的展开与收缩
        private void switchButtonItem1_ValueChanged(object sender, EventArgs e)
        {
            if (switchButtonItem1.Value == true)
                this.ribbonControl1.Expanded = false;
            else
                this.ribbonControl1.Expanded = true;
        }
        //打开文件
        private void openFile_Click(object sender, EventArgs e)
        {
            string mess = closeFile(sender,e);
            if(mess.Equals("Cancel"))
                return;
            try
            {
                OpenFileDialog open = new OpenFileDialog();
                open.Title = "打开文本文件";
                open.AddExtension = true;
                open.CheckFileExists = true;
                open.CheckPathExists = true;
                open.Filter = this.Filter;
                if (open.ShowDialog() == DialogResult.OK)
                {
                   // this.Text = open.SafeFileName   "-记事本";
                    fileURL = open.FileName;
                    fileInfo = new FileInfo(fileURL);
                    StreamReader Sr = new StreamReader(fileURL, System.Text.Encoding.Default);
                    this.richTextBox1.Text = Sr.ReadToEnd();
                    MainForm_Load(sender, e);
                    Sr.Close();
                }
            }
            catch (Exception Ex)
            {
                MessageBox.Show(Ex.ToString());
            }
        }
        //显示文件的信息
        private void showFile_Message()
        {
            if (fileInfo!=null)
            {
                lablelFileName.Text = fileInfo.Name;
                labelFileSize.Text = (fileInfo.Length)   " 字节";
                labelFileDate.Text = fileInfo.CreationTimeUtc.ToString();
            }
            else
            {
                lablelFileName.Text = "未命名";
                labelFileSize.Text = "0 字节";
                labelFileDate.Text = "未创建文件";
            }
        }
        //字体放大或缩小
        private void sliderItem1_ValueChanged(object sender, EventArgs e)
        {
            if (sliderItem1.Value < 100)
            {
                sliderItem1.Minimum = 25;
                sliderItem1.Maximum = 175;
                sliderItem1.Step = 3;
                if (sliderItem1.Value==99||sliderItem1.Value==80)
                    sliderItem1.Value = 97;
            }
            else if (sliderItem1.Value > 100)
            {
                sliderItem1.Minimum = -200;
                sliderItem1.Maximum = 400;
                sliderItem1.Step = 20;
                if (sliderItem1.Value==101||sliderItem1.Value==103)
                    sliderItem1.Value = 120;
            }
            this.sliderItem1.Text = sliderItem1.Value.ToString() "%";

            showFont();
        }
        //文件存储
        private void saveFile()
        {
            try
            {
                FileStream Fs = File.Open(fileURL, FileMode.Create, FileAccess.Write);
                StreamWriter Sw = new StreamWriter(Fs,Encoding.Default);
                Sw.Write(richTextBox1.Text);
                change = false;
                Sw.Close();
                Fs.Close();
                fileInfo = new FileInfo(fileURL);
                showFile_Message();
            }
            catch (Exception Ex)
            {
                MessageBox.Show(Ex.ToString(),"警告",MessageBoxButtons.OK,MessageBoxIcon.Warning);
            }
        }
        //创建新文件
        private void newFile_Click(object sender, EventArgs e)
        {
            string mess = closeFile(sender,e);
            if(mess.Equals("Cancel"))
                return;
            else
            {
                fileURL = null;
                fileInfo = null;
                richTextBox1.Clear();
                MainForm_Load(sender, e);
            }
        }
        //另存为对话框
        private void saveFileAsButton()
        {
            SaveFileDialog save = new SaveFileDialog();
            save.Title = "另存为";
            save.AddExtension = true;
            save.AutoUpgradeEnabled = true;
            save.Filter = this.Filter;
            if (save.ShowDialog() == DialogResult.OK)
                fileURL = save.FileName;
            else
                return;
        }
        //撤销按钮
        private void backButton_Click(object sender, EventArgs e)
        {
            if (richTextBox1.CanUndo)
            {
                richTextBox1.Undo();
               // fontNames.SelectedItem = richTextBox1.Font.Name;
               // fontSize.SelectedItem = richTextBox1.Font.Size * 100 / sliderItem1.Value;
                LineColAndSum();
                ControlChanged();
            }
            else
                return;
        }   
        //撤销-撤销按钮
        private void redoButton_Click(object sender, EventArgs e)
        {
            if (richTextBox1.CanRedo)
            {
                richTextBox1.Redo();
                LineColAndSum();
                ControlChanged();
            }
            else
                return;
        }
        //光标位置的变化---鼠标
        private void CursorChanged(object sender, EventArgs e)
        {
            LineColAndSum();
        }
        //光标位置的变化---键盘
        private void richTextBox1_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Left || e.KeyCode == Keys.Right || e.KeyCode == Keys.Up || e.KeyCode == Keys.Down)
                LineColAndSum();
        }
        //粘贴
        private void pasteButton_Click(object sender, EventArgs e)
        {
            richTextBox1.Paste();
            LineColAndSum();
        }
        //剪切 
        private void cutButton_Click(object sender, EventArgs e)
        {
            richTextBox1.Cut();
            LineColAndSum();
        }
        //复制
        private void copyButton_Click(object sender, EventArgs e)
        {
            richTextBox1.Copy();
        }
        //删除所选择的文字
        private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            richTextBox1.SelectedText = "";
        }
        //选中全部文字
        private void 全选ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            richTextBox1.SelectAll();
        }
        //字体名称发生变化
        private void fontNames_SelectedIndexChanged(object sender, EventArgs e)
        {
            string Name = fontNames.SelectedItem.ToString();
            font = new Font(Name, font.Size);
            showFont();
        }
        //字体字号发生变化
        private void fontSize_SelectedIndexChanged(object sender, EventArgs e)
        {
            float size = float.Parse(fontSize.SelectedItem.ToString());
            size = size*sliderItem1.Value/100;
            font = new Font(font.Name, size);
            showFont();
        }
        //字体样式统计
        private void fontStyle_Changed()
        {
            font = new Font(font.Name, font.Size, FontStyle.Regular);
            foreach (string i in fontStyle)
            {
                //string i = fontStyle[0];
                if (i.Equals("bold"))
                    font = new Font(font.Name, font.Size, font.Style | FontStyle.Bold);
                if(i.Equals("ltalic"))
                    font = new Font(font.Name, font.Size, font.Style | FontStyle.Italic);
                if (i.Equals("underline")) 
                    font = new Font(font.Name, font.Size, font.Style | FontStyle.Underline);
                if(i.Equals("strikeout"))
                    font = new Font(font.Name, font.Size, font.Style | FontStyle.Strikeout);
            }
            showFont();
        }
        //字体粗体设置
        private void boldButton_Click(object sender, EventArgs e)
        {
            if (boldButton.Checked == false)
            {
                boldButton.Checked = true;
                fontStyle[0] = "bold";
            }
            else
            {
                boldButton.Checked = false;
                fontStyle[0] = "";
            }
            fontStyle_Changed();
        }
        //倾斜字体设置
        private void ltalicButton_Click(object sender, EventArgs e)
        {
            if (ltalicButton.Checked == false)
            {
                ltalicButton.Checked = true;
                fontStyle[1] = "ltalic";
            }
            else
            {
                ltalicButton.Checked = false;
                fontStyle[1] = "";
            }
            fontStyle_Changed();
        }
        //下划线字体设置
        private void unLineButton_Click(object sender, EventArgs e)
        {
            if (unLineButton.Checked == false)
            {
                unLineButton.Checked = true;
                fontStyle[2] = "underline";
            }
            else
            {
                unLineButton.Checked = false;
                fontStyle[2] = "";
            }
            fontStyle_Changed();
        }
        //删除线设置
        private void stLineButton_Click(object sender, EventArgs e)
        {
            if (stLineButton.Checked == false)
            {
                stLineButton.Checked = true;
                fontStyle[3] = "strikeout";
            }
            else
            {
                stLineButton.Checked = false;
                fontStyle[3] = "";
            }
            fontStyle_Changed();
        }
        //字体颜色发生变化
        private void colorButton_SelectedColorChanged(object sender, EventArgs e)
        {
            color = colorButton.SelectedColor;
            showFont();
        }
        //文本左对齐
        private void fontLeftButton_Click(object sender, EventArgs e)
        {
            if (fontLeftButton.Checked == true)
                return;
            else
            {
                fontLeftButton.Checked = true;
                fontRightButton.Checked = false;
                fontCenterButton.Checked = false;
                richTextBox1.SelectionAlignment = HorizontalAlignment.Left; 
            }
        }
        //右对齐
        private void fontRightButton_Click(object sender, EventArgs e)
        {
            if (fontRightButton.Checked == true)
                return;
            else
            {
                fontRightButton.Checked = true;
                fontCenterButton.Checked = false;
                fontLeftButton.Checked = false;
                richTextBox1.SelectionAlignment = HorizontalAlignment.Right; 
            }
        }
        //居中对齐
        private void fontCenterButton_Click(object sender, EventArgs e)
        {
            if (fontCenterButton.Checked == true)
                return;
            else
            {
                fontLeftButton.Checked = false;
                fontRightButton.Checked = false;
                fontCenterButton.Checked = true;
                richTextBox1.SelectionAlignment = HorizontalAlignment.Center;
            }
        }
        //点击保存按钮
        private void saveFileButton_Click(object sender, EventArgs e)
        {
            if (fileURL.Equals(""))
                saveFileAsButton();
            if (!fileURL.Equals(""))
                saveFile();
            else
                return;
        }
        //点击另存为按钮
        private void saveAsFileButton_Click(object sender, EventArgs e)
        {
            saveFileAsButton();
            if (!fileURL.Equals(""))
                saveFile();
            else
                return;
        }
        //当用户聚焦到textKey上时
        private void textKey_GotFocus(object sender, EventArgs e)
        {
            if (textKey.Text.Equals("  请输入关键字"))
                textKey.Text = "";
            else
                return;
        }
        //当用户对textKey失去聚焦时
        private void textKey_LostFocus(object sender, EventArgs e)
        {
            if (textKey.Text.Equals(""))
                textKey.Text = "  请输入关键字";
            else
                return;
        }
        //查找关键字
        private void findKey_Click(object sender, EventArgs e)
        {
            string key = textKey.Text;
            if (richTextBox1.Find(key, richTextBox1.SelectionStart   richTextBox1.SelectionLength, richTextBox1.TextLength, RichTextBoxFinds.None) < 0) // 为-1表示没有找到
            {
                richTextBox1.SelectionStart = 0; // 光标设置为0位置
                richTextBox1.SelectionLength = 0;
            }
            richTextBox1.Focus();
        }
        //打印
        private void buttonItem6_Click(object sender, EventArgs e)
        {
            MessageBox.Show("o(︶︿︶)o 唉~\n开发中...");
        }
        //关闭文档
        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            string mess = closeFile(sender, e);
            if (mess.Equals("Cancel"))
                e.Cancel = true;
        }
        //点击退出按钮
        private void exitbutton_Click(object sender, EventArgs e)
        {
            String mess = closeFile(sender, e);
            if (mess.Equals("Cancel"))
                Application.Exit();
        }
        //经典蓝
        private void StyleBlue_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2007Blue;
        }
        //水晶银
        private void StyleSilver_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2007Silver;
        }
        //酷炫黑
        private void StyleBlack_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2007Black;
        }
        //VistaGlass
        private void StyleVistaGlass_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2007VistaGlass;
        }
        //洁白银
        private void StyleSilver1_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2010Silver;
        }
        //浅色蓝
        private void StyleBlue1_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2010Blue;
        }
        //咖啡黑
        private void StyleBlack1_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Office2010Black;
        }
        //Win7蓝
        private void StyleBlue2_Click(object sender, EventArgs e)
        {
            styleManager1.ManagerStyle = DevComponents.DotNetBar.eStyle.Windows7Blue;
        }
        //拖入文件操作
        private void RichTextBox1_DragEnter(object sender, System.Windows.Forms.DragEventArgs e)
        {
            string mess = closeFile(sender, e);
            if (mess.Equals("Cancel"))
                return;
            else
            {
                fileURL = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();
                fileInfo = new FileInfo(fileURL);
                StreamReader Sr = new StreamReader(fileURL, System.Text.Encoding.Default);
                this.richTextBox1.Text = Sr.ReadToEnd();
                MainForm_Load(sender, e);
                Sr.Close();
            }
        }
        //关闭当前文件
        private String closeFile(Object sender, EventArgs e)
        {
            if (change)
            {
                DialogResult DResut = MessageBox.Show("文件发生了改动，是否保存?", "信息", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
                if (DResut == DialogResult.Yes)
                {
                    saveFileButton_Click(sender, e);
                    return "Yes";
                }
                else if (DResut == DialogResult.No)
                {
                    return "No";
                }
                else
                    return "Cancel";
            }
            else
                return "No";
        }
    }
}