form1.cs

简单的记事本功能

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

namespace 记事本
{
    public partial class Form1 : Form
    {
        string filename;
        public string replacesteing;
        public string findstring;
        public int findplace;
       
        bool ischanged;
        Find f = new Find();
        Replace r = new Replace();
        About a = new About();
     
        public Form1()
        {

            InitializeComponent();
            findstring = "";
            replacesteing = "";
            findplace=0;
           

            this.Text = "未定标题--记事本";
            filename = " ";
            ischanged = false;
            this.printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(printDocument1_PrintPage);
            f.button1.Click += new EventHandler(button1_Click);
          
            r.button2.Click += new EventHandler(button2_Click);
            r.button3.Click += new EventHandler(button3_Click);
            r.rbutton1.Click += new EventHandler(rbutton1_Click);         
          
        }
        
        void rbutton1_Click(object sender, EventArgs e)
        {
            r.findstring = r.textBox1.Text;
            if((r.findplace=richTextBox1.Text.IndexOf(r.findstring,r.findplace))==-1)
            {
                MessageBox.Show("no find");
                r.findplace=0;
            }
            else
            {
                richTextBox1.Select(r.findplace,r.findstring.Length);
                this.Activate();
                r.findplace+=r.findstring.Length;

            }
            //throw new Exception("The method or operation is not implemented.");
        }

        void button3_Click(object sender, EventArgs e)
        {
            r.findstring = r.textBox1.Text;
            r.replacestring = r.textBox2.Text;
            this.richTextBox1.Text = richTextBox1.Text.Replace(r.findstring, r.replacestring);
            //throw new Exception("The method or operation is not implemented.");
        }

        void button2_Click(object sender, EventArgs e)
        {

            r.replacestring = r.textBox2.Text;
            richTextBox1.SelectedText = r.replacestring;
            //throw new Exception("The method or operation is not implemented.");
        }

        void button1_Click(object sender, EventArgs e)
        {
            string source;   //被查找的文本
			string finding;  //查找的关键字
               f.findstring = f.textBox1.Text;        
                if ((f.findplace = richTextBox1.Text.IndexOf(f.findstring, f.findplace)) == -1)
                {
                    MessageBox.Show("no find");
                    f.findplace = 0;
                }
                else
                {
                    //区分大小写
                    if(this.f.checkBox1.Checked==false)
                    {
                        source = this.richTextBox1.Text.ToLower();
                        finding=this.f.textBox1.Text.ToLower();
                        int temp = source.IndexOf(finding,f.findplace);
                        this.richTextBox1.Select(temp,finding.Length);
                        Activate();
                        f.findplace +=finding.Length;
			        }
			        else
			        {
				        source=this.richTextBox1.Text;
				        finding=this.f.textBox1.Text;
                        this.richTextBox1.Select(f.findplace, finding.Length);
                        Activate();
                        f.findplace += finding.Length;
			        }                    
                }
        }
        void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {        
            string s = richTextBox1.Text;
            e.Graphics.DrawString(s, richTextBox1.Font, Brushes.Black, 20, 20);
        }

        private void richTextBox1_TextChanged(object sender, EventArgs e)
        {
             ischanged = true;
             if (richTextBox1.Text.Length > 0)
             {
                 撤消UToolStripMenuItem.Enabled = true;
                 复制CToolStripMenuItem.Enabled = true;
                 删除LDelToolStripMenuItem.Enabled = true;
                 剪切ToolStripMenuItem.Enabled = true;
                 全选ACtrlAToolStripMenuItem.Enabled = true;
             }
             else
             {
                 撤消UToolStripMenuItem.Enabled = false;
                 剪切ToolStripMenuItem.Enabled = false;
                 复制CToolStripMenuItem.Enabled = false;
                 删除LDelToolStripMenuItem.Enabled = false;
                 全选ACtrlAToolStripMenuItem.Enabled = false;
             }
        }
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            filename = this.Text;
            if (this.ischanged== true)
            {
                DialogResult result = MessageBox.Show(filename+"的文本已经改变,"+'\n'+"想保存文件吗?", "提示", MessageBoxButtons.YesNoCancel,MessageBoxIcon.Warning);
                if (result == DialogResult.Yes)
                {
                    this.saveFileDialog1.Filter = "所有文件(*.*)|*.*|文本文档(*.txt)|*.txt";
                    this.saveFileDialog1.FileName = filename;
                    this.saveFileDialog1.ShowDialog();
                }
            }
        }
        private void 全选ACtrlAToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.richTextBox1.SelectAll();
        }

        private void 查找FCtrlFToolStripMenuItem_Click_1(object sender, EventArgs e)
        { 
            if (f.IsDisposed)
            {
                f = new Find();
                f.Show();
            }
            else
            {
                f.Show();
            }
        }
        private void 替换RCtrlHToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            if (r.IsDisposed)
            {
                r = new Replace();
                r.Show();
            }
            else
            {
                r.Show();
            }
           
        }

        private void richTextBox1_KeyUp(object sender, KeyEventArgs e)
        {
            //if (richTextBox1.SelectedText.Length > 0)
            //{

            //    剪切ToolStripMenuItem.Enabled = true;
            //    复制CToolStripMenuItem.Enabled = true;
            //}
            //else
            //{
            //    剪切ToolStripMenuItem.Enabled = false;
            //    复制CToolStripMenuItem.Enabled = false;
            //}
        }

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

        private void 剪切ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            this.richTextBox1.Cut();
        }

        private void 撤消UToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            this.richTextBox1.Undo();
        }

        private void 复制CToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            this.richTextBox1.Copy();
        }

        private void 粘贴PToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            this.richTextBox1.Paste();
        }

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

        private void Form1_Load(object sender, EventArgs e)
        {
            
        }

        private void 新建ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            this.Text = "未定标题--记事本";
            filename = this.Text;
            richTextBox1.Clear();
            filename = "";
            if (this.ischanged == true)
            {
                DialogResult result = MessageBox.Show(filename + "的文本已经改变," + '\n' + "想保存文件吗?", "提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning);
                if (result == DialogResult.Yes)
                {

                    this.saveFileDialog1.Filter = "所有文件(*.*)|*.*|文本文档(*.txt)|*.txt";
                    this.saveFileDialog1.FileName = filename;
                    this.saveFileDialog1.ShowDialog();
                }
            }
            ischanged = false;
            this.richTextBox1.Text = "";
            filename = "";
        }

        private void 打开ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            openFileDialog1.Filter = "文本文档(*.txt)|*.txt|所有文件(*.*)|*.*";
            openFileDialog1.FileName = "*.txt";
            if (this.ischanged == true)
            {
                DialogResult result = MessageBox.Show(filename + "的文本已经改变," + '\n' + "想保存文件吗?", "提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning);
                if (result == DialogResult.Yes)
                {

                    this.saveFileDialog1.Filter = "所有文件(*.*)|*.*|文本文档(*.txt)|*.txt";
                    this.saveFileDialog1.FileName = filename;
                    this.saveFileDialog1.ShowDialog();
                }
            }

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                filename = openFileDialog1.FileName;
                this.Text = "记事本--" + filename;
                richTextBox1.LoadFile(filename, RichTextBoxStreamType.PlainText);
            }
        }

        private void 保存ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            if (filename == " ")
            {
                saveFileDialog1.FileName = "*.txt";
                saveFileDialog1.Filter = "文本文档(*.txt)|*.txt|所有文件(*.*)|*.*";
                if (saveFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    filename = saveFileDialog1.FileName;
                    this.Text = "记事本--" + filename;
                    richTextBox1.SaveFile(filename, RichTextBoxStreamType.PlainText);

                }

            }
            else
            {
                richTextBox1.SaveFile(filename, RichTextBoxStreamType.PlainText);
                ischanged = false;
            }
        }

        private void 页面设置ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            string mes = "打印之前必须已经安装打印机." + '\n' + "要安装打印机,请单击'开始',指向'设置',选定'打印机',然后再双击'安装打印机'";
            pageSetupDialog1.Document = this.printDocument1;
            try
            {
                pageSetupDialog1.ShowDialog();
            }
            catch
            {
                MessageBox.Show(mes, "打印错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void toolStripMenuItem1_Click_1(object sender, EventArgs e)
        {
            string mes = "打印之前必须已经安装打印机." + '\n' + "要安装打印机,请单击'开始',指向'设置',选定'打印机',然后再双击'安装打印机'";
            printPreviewDialog1.Document = this.printDocument1;
            try
            {
                printPreviewDialog1.ShowDialog();
            }
            catch
            {
                MessageBox.Show(mes, "打印错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void 打印ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            if (printDialog1.ShowDialog() == DialogResult.OK)
            {
                printDocument1.Print();
            }
        }

        private void 退出XToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            Close();
        }

        private void 字体ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            if (fontDialog1.ShowDialog() == DialogResult.OK)
            {
                richTextBox1.Font = fontDialog1.Font;
            }

        }

        private void 另存为ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            saveFileDialog1.FileName = "*.txt";
            saveFileDialog1.Filter = "文本文档(*.txt)|*.txt|所有文件(*.*)|*.*";
            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                filename = saveFileDialog1.FileName;
                this.Text = "记事本--" + filename;
                richTextBox1.SaveFile(filename, RichTextBoxStreamType.PlainText);

            }
        }

        private void 帮助主题HToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            Help.ShowHelp(this, "C:\\WINNT\\Help\\notepad.chm");
        }

        private void 时间日期DF5ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string time = System.DateTime.Now.ToString();
            richTextBox1.SelectedText = time;
        }

        private void 关于记事本AToolStripMenuItem_Click(object sender, EventArgs e)
        {
            a.Show();
        }

    }
}