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C#撰寫一個較完整的記事本程式

2020-09-18 11:01:09 .NET開發

 

開發環境

Visual Studio 2019

  • 至少需安裝 .NET桌面開發

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創建專案并配置

創建表單檔案

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配置專案名稱及框架

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設計界面

創建表單檔案，將控制元件擺放位置如下，參考系統自帶的記事本程式
表單控制元件分布

表單添加的控制元件和組件如下

  • 控制元件及組件在工具箱查找

表單所需添加的控制元件和組件

表單屬性

表單屬性

快捷鍵設定

  • 雜項 --> ShortcutKeys

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程式屬性

專案屬性如下圖，在創建專案時就已定好了框架，如果在另一臺主機上的框架版本比目前專案框架版本低的話，則運行不起來

  • 文章末尾有整個程式的壓縮包鏈接可下載，如需直接運行則需下載對應的.NET Framework 4.7.2框架

專案屬性

程式圖示可在此設定，生成程式后的圖示如下圖，此檔案夾下的程式檔案可在第二臺主機上直接運行（專案\bin\Debug目錄下就是生成程式檔案的存放位置，雙擊程式檔案即可運行）

專案生成檔案的路徑

代碼演示

代碼開頭的using部分

  • 注釋部分需自行添加
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;//提供了關于檔案、資料流的讀取和寫入操作
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Diagnostics;//提供了用于與事件日志、性能計數器和系統行程進行互動的類

主要功能

1.新建檔案：

    private void 新建NToolStripMenuItem_Click(object sender, EventArgs e)
    {
        if (txtBox.Modified == true)
        {
            DialogResult dr = MessageBox.Show("檔案發生變化，是否更改保存？", "注意", MessageBoxButtons.YesNoCancel);
            if (dr == DialogResult.Yes)
            {
                保存SToolStripMenuItem_Click(sender, e);
                return;
            }
            else if (dr == DialogResult.Cancel)
            {
                return;
            }
            txtBox.Clear();
            this.Text = "NewNotepad";
        }
        else
        {
            txtBox.Clear();
            this.Text = "NewNotepad";
        }
    }
新建檔案

2.打開：

    private void 打開ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        if (openFileDialog.ShowDialog() == DialogResult.OK)
        {
            filename = openFileDialog.FileName;
            OpenFile();
        }
    }
    protected void OpenFile()
    {
        try
        {
            txtBox.Clear();
            txtBox.Text = File.ReadAllText(filename);
        }
        catch
        { MessageBox.Show("Error!"); }
    }
打開

3.保存：

    private void 保存SToolStripMenuItem_Click(object sender, EventArgs e)
    {
        try
        {
            StreamWriter sw = File.AppendText(Application.ExecutablePath);
            sw.Write(txtBox.Text);
            sw.Dispose();
        }
        catch
        {
            SaveFileDialog sf = new SaveFileDialog();
            sf.DefaultExt = "*.txt";
            sf.Filter = "文本檔案(.txt)|*.txt";
            if (sf.ShowDialog() == DialogResult.OK)
            {
                StreamWriter sw = File.AppendText(sf.FileName);
                sw.Write(txtBox.Text);
                sw.Dispose();
            }
        }
    }
保存

4.另存為：

    private void 另存為ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        string name;
        //SaveFileDialog類
        SaveFileDialog save = new SaveFileDialog();
        //過濾器
        save.Filter = "*.txt|*.TXT|(*.*)|*.*";
        //顯示
        if (save.ShowDialog() == DialogResult.OK)
        {
            name = save.FileName;
            FileInfo info = new FileInfo(name);
            //info.Delete();
            StreamWriter writer = info.CreateText();
            writer.Write(txtBox.Text);
            writer.Close();
        }
    }
另存為

5.列印：

    private void 列印PToolStripMenuItem_Click(object sender, EventArgs e)
    {
        //顯示允許用戶選擇列印機的選項及其它列印選項的對話框
        this.printDialog.Document = this.printDocument;
        this.printDialog.PrinterSettings = this.pageSetupDialog.PrinterSettings;
        //向列印機發送列印指令
        if (this.printDialog.ShowDialog() == DialogResult.OK)
        {
            try
            {
                this.printDocument.Print();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "錯誤資訊！", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
    }
列印

6.編輯：

  • 根據輸入是否輸入內容控制是否啟用功能
    private void 編輯ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        剪切ToolStripMenuItem.Enabled = txtBox.Modified;
        if (txtBox.SelectedText == "")
        {
            剪切ToolStripMenuItem.Enabled = false;
            復制ToolStripMenuItem.Enabled = false;
            洗掉ToolStripMenuItem.Enabled = false;
        }
        else
        {
            剪切ToolStripMenuItem.Enabled = true;
            復制ToolStripMenuItem.Enabled = true;
            洗掉ToolStripMenuItem.Enabled = true;
        }
        if (txtBox.Text == "")
        {
            查找ToolStripMenuItem.Enabled = false;
            查找下一個ToolStripMenuItem.Enabled = false;
            查找上一個ToolStripMenuItem.Enabled = false;
            替換ToolStripMenuItem.Enabled = false;
        }
        else
        {
            查找ToolStripMenuItem.Enabled = true;
            查找下一個ToolStripMenuItem.Enabled = true;
            查找上一個ToolStripMenuItem.Enabled = true;
            替換ToolStripMenuItem.Enabled = true;
        }
        if (Clipboard.GetText() == "")
            粘貼ToolStripMenuItem.Enabled = false;
        else
            粘貼ToolStripMenuItem.Enabled = true;
    }
編輯

7.查找：

  • 查找功能不夠完善，混用查找上一項和查找下一項效果不理想
    TextBox txtInput = new TextBox()
    {
        Font = new Font("宋體", 10)
    };
    TextBox txtInputReplace = new TextBox()
    {
        Font = new Font("宋體", 10)
    };
    Label lblSearch = new Label
    {
        Text = "查找內容：",
        Size = new Size(65, 25),
        Location = new Point(5, 22)
    };
    Label lblDirection = new Label
    {
        Text = "查找方向：",
        Size = new Size(65, 25),
        Location = new Point(5, 58)
    };
    Button FindNext = new Button
    {
        Name = "btnFindNext",
        Text = "查找下一項",
        Size = new Size(80, 25),
        Location = new Point(265, 15)
    };
    Button Cancel = new Button
    {
        Name = "btnCancel",
        Text = "取消",
        Size = new Size(80, 25),
        Location = new Point(265, 50)
    };
    RadioButton down = new RadioButton
    {
        Name = "radDown",
        Text = "向下",
        Size = new Size(55, 25),
        Location = new Point(70, 53),
        Checked = true
    };
    RadioButton upward = new RadioButton
    {
        Name = "radUpward",
        Text = "向上",
        Size = new Size(55, 25),
        Location = new Point(140, 53),
        Checked = false
    };
    new Form FindForm = new Form
    {
        Text = "查找文本",
        FormBorderStyle = FormBorderStyle.FixedSingle,
        MaximizeBox = false,
        MinimizeBox = false
    };
    private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        //顯示查找對話框
        txtInput.Size = new Size(190, 33);
        txtInput.Location = new Point(70, 15);
        txtInput.Multiline = true;

        FindNext.Click += new EventHandler(Direction_Click);
        //FindNext.Click += new EventHandler(Visible_Click);

        Cancel.Click += new EventHandler(Cancel_Click);

        FindForm.Controls.Add(lblSearch);
        FindForm.Controls.Add(lblDirection);
        FindForm.Controls.Add(txtInput);
        FindForm.Controls.Add(down);
        FindForm.Controls.Add(upward);
        FindForm.Controls.Add(FindNext);
        FindForm.Controls.Add(Cancel);
        FindForm.Top = this.Top + 50;
        FindForm.Left = this.Left + 50;
        FindForm.Height = 120;
        FindForm.Width = 380;
        FindForm.StartPosition = FormStartPosition.CenterParent;
        FindForm.ShowDialog();
    }
    private void Cancel_Click(object sender, EventArgs e)
    {
        //關閉對話框
        FindForm.Close();
        ReplaceForm.Close();
    }
    private void Direction_Click(object sender, EventArgs e)
    {
        //選擇字符查找方向
        if (down.Checked == true)
        {
            Find_Click(sender, e);
        }
        else if (upward.Checked == true)
        {
            FindLast_Click(sender, e);
        }
    }
            int nextPosition, firstPosition;
    string word;
    Boolean IF = false;
    private void Find_Click(object sender, EventArgs e)
    {
        txtBox.Focus();
        FindWords(txtInput.Text);
    }
    private void FindWords(string words)
    {
        //向下查找字符
        if (nextPosition >= txtBox.Text.Length)
            nextPosition = 0;
        firstPosition = txtBox.Text.IndexOf(words, nextPosition);
        if (firstPosition == -1)
            nextPosition = 0;
        else
        {
            txtBox.Select(firstPosition, words.Length);
            nextPosition = firstPosition + 1;
        }
        word = words;
        IF = true;
    }
查找

在這里插入圖片描述

8. 查找下一項 ：

    private void 查找下一個ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        //查找下一項，如果未查找過，則顯示查找對話框
        down.Checked = true;
        upward.Checked = false;
        try
        {
            FindWords(word);
        }
        catch
        {
            查找ToolStripMenuItem_Click(sender, e);
        }
    }
查找下一項

9.查找上一項：

    private void FindWordsLast(string words)
    {
        //向上查找字符
        if (IF == false)
            nextPosition = txtBox.Text.Length;
        if (nextPosition < 0)
            nextPosition = txtBox.Text.Length;

        firstPosition = txtBox.Text.LastIndexOf(words, nextPosition);

        if (firstPosition == -1)
            nextPosition = txtBox.Text.Length;
        else
        {
            txtBox.Select(firstPosition, words.Length);
            nextPosition = firstPosition - 1;
        }
        word = words;
        IF = true;
    }
    private void 查找上一個ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        //查找上一項，如果未查找過，則顯示查找對話框
        upward.Checked = true;
        down.Checked = false;
        try
        {
            FindWordsLast(word);
        }
        catch
        {
            查找ToolStripMenuItem_Click(sender, e);
        }
    }
查找上一項

10.替換：

    Label LblReplace = new Label
    {
        Name = "lblReplace",
        Text = "替換：",
        Size = new Size(55, 25),
        Location = new Point(15, 50)
    };
    Form ReplaceForm = new Form
    {
        Text = "替換文本",
        FormBorderStyle = FormBorderStyle.FixedSingle,
        MaximizeBox = false,
        MinimizeBox = false
    };
    private void 替換ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        txtInput.Size = new Size(190, 30);
        txtInput.Location = new Point(70, 12);
        txtInput.Multiline = true;

        txtInputReplace.Size = new Size(190, 30);
        txtInputReplace.Location = new Point(70, 47);
        txtInputReplace.Multiline = true;

        Button Replace = new Button
        {
            Name = "btnReplace",
            Text = "替換",
            Size = new Size(80, 25),
            Location = new Point(265, 15)
        };
        Replace.Click += new EventHandler(Replace_Click);
        Cancel.Click += new EventHandler(Cancel_Click);

        ReplaceForm.Controls.Add(lblSearch);
        ReplaceForm.Controls.Add(LblReplace);
        ReplaceForm.Controls.Add(txtInput);
        ReplaceForm.Controls.Add(txtInputReplace);
        ReplaceForm.Controls.Add(Replace);
        ReplaceForm.Controls.Add(Cancel);
        ReplaceForm.Top = this.Top + 50;
        ReplaceForm.Left = this.Left + 50;
        ReplaceForm.Height = 140;
        ReplaceForm.Width = 380;
        ReplaceForm.StartPosition = FormStartPosition.CenterParent;
        ReplaceForm.ShowDialog();
    }
    private void Replace_Click(object sender, EventArgs e)
    {
        txtBox.Text = txtBox.Text.Replace(txtInput.Text, txtInputReplace.Text);
    }
替換

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11. 字體選擇：

  • 直接呼叫控制元件即可
    private void 字體ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        //提示用戶從本地計算機安裝的字體中選擇字體字號
        FontDialog fontDialog = new FontDialog();
        if (fontDialog.ShowDialog() == DialogResult.OK)
        {
            txtBox.Font = fontDialog.Font;
        }
    }
字體選擇

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12. 關于記事本：

  • 新建一個視窗，根據自己的喜好添加標簽及擺放位置
    private void 關于記事本ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        //關于記事本說明
        Label lblTitle = new Label()
        {
            Text = "多功能記事本",
            Size = new Size(150, 25),
            Location = new Point(100, 50)
        };
        Label lblEdition = new Label()
        {
            Text = "版本號：個性測驗版",
            Size = new Size(150, 25),
            Location = new Point(85, 100)
        };
        Label lblMail = new Label()
        {
            Text = "E-Mail：",
            Size = new Size(55, 25),
            Location = new Point(30, 180)
        };
        LinkLabel llblMail = new LinkLabel()
        {
            Text = "[email protected]",
            Size = new Size(110, 25),
            Location = new Point(85, 180)
        };
        Label lblCNDS = new Label()
        {
            Text = "CNDS博客：",
            Size = new Size(65, 25),
            Location = new Point(20, 220)
        };
        LinkLabel llblCNDS = new LinkLabel()
        {
            Text = "https://blog.csdn.net/UFO_Harold",
            Size = new Size(200, 25),
            Location = new Point(85, 220)
        };
        Form about = new Form
        {
            Text = "關于記事本",
            FormBorderStyle = FormBorderStyle.FixedSingle,
            MaximizeBox = false
        };

        llblCNDS.Click += new EventHandler(LlblCNDS_Click);
        about.Controls.Add(lblTitle);
        about.Controls.Add(lblEdition);
        about.Controls.Add(lblMail);
        about.Controls.Add(llblMail);
        about.Controls.Add(lblCNDS);
        about.Controls.Add(llblCNDS);
        about.Top = this.Top + this.Height / 2 - about.Height / 2;
        about.Left = this.Left + this.Width / 2 - about.Width / 2;
        about.StartPosition = FormStartPosition.CenterParent;
        about.ShowDialog();
    }
關于記事本
  • 效果如圖

程式的關于記事本功能展示

完整代碼

namespace Notepad
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string filename = "";
        public Form1(string filename)
        {
            InitializeComponent();
            if (filename != null)
            {
                this.filename = filename;
                OpenFile();
            }
        }
        private void 新建NToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (txtBox.Modified == true)
            {
                DialogResult dr = MessageBox.Show("檔案發生變化，是否更改保存？", "注意", MessageBoxButtons.YesNoCancel);
                if (dr == DialogResult.Yes)
                {
                    保存SToolStripMenuItem_Click(sender, e);
                    return;
                }
                else if (dr == DialogResult.Cancel)
                {
                    return;
                }
                txtBox.Clear();
                this.Text = "NewNotepad";
            }
            else
            {
                txtBox.Clear();
                this.Text = "NewNotepad";
            }
        }
        private void 打開ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                filename = openFileDialog.FileName;
                OpenFile();
            }
        }
        protected void OpenFile()
        {
            try
            {
                txtBox.Clear();
                txtBox.Text = File.ReadAllText(filename);
            }
            catch
            { MessageBox.Show("Error!"); }
        }
        private void 保存SToolStripMenuItem_Click(object sender, EventArgs e)
        {
            try
            {
                StreamWriter sw = File.AppendText(Application.ExecutablePath);
                sw.Write(txtBox.Text);
                sw.Dispose();
            }
            catch
            {
                SaveFileDialog sf = new SaveFileDialog();
                sf.DefaultExt = "*.txt";
                sf.Filter = "文本檔案(.txt)|*.txt";
                if (sf.ShowDialog() == DialogResult.OK)
                {
                    StreamWriter sw = File.AppendText(sf.FileName);
                    sw.Write(txtBox.Text);
                    sw.Dispose();
                }
            }
        }
        private void 另存為ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string name;
            //SaveFileDialog類
            SaveFileDialog save = new SaveFileDialog();
            //過濾器
            save.Filter = "*.txt|*.TXT|(*.*)|*.*";
            //顯示
            if (save.ShowDialog() == DialogResult.OK)
            {
                name = save.FileName;
                FileInfo info = new FileInfo(name);
                //info.Delete();
                StreamWriter writer = info.CreateText();
                writer.Write(txtBox.Text);
                writer.Close();
            }
        }
        private void 頁面設定ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //彈出頁面設定界面
            pageSetupDialog.Document = printDocument;
            pageSetupDialog.ShowDialog();
        }
        private void 列印PToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //顯示允許用戶選擇列印機的選項及其它列印選項的對話框
            this.printDialog.Document = this.printDocument;
            this.printDialog.PrinterSettings = this.pageSetupDialog.PrinterSettings;
            //向列印機發送列印指令
            if (this.printDialog.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    this.printDocument.Print();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "錯誤資訊！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }
        private void 退出XToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
        private void 編輯ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            剪切ToolStripMenuItem.Enabled = txtBox.Modified;
            if (txtBox.SelectedText == "")
            {
                剪切ToolStripMenuItem.Enabled = false;
                復制ToolStripMenuItem.Enabled = false;
                洗掉ToolStripMenuItem.Enabled = false;
            }
            else
            {
                剪切ToolStripMenuItem.Enabled = true;
                復制ToolStripMenuItem.Enabled = true;
                洗掉ToolStripMenuItem.Enabled = true;
            }
            if (txtBox.Text == "")
            {
                查找ToolStripMenuItem.Enabled = false;
                查找下一個ToolStripMenuItem.Enabled = false;
                查找上一個ToolStripMenuItem.Enabled = false;
                替換ToolStripMenuItem.Enabled = false;
            }
            else
            {
                查找ToolStripMenuItem.Enabled = true;
                查找下一個ToolStripMenuItem.Enabled = true;
                查找上一個ToolStripMenuItem.Enabled = true;
                替換ToolStripMenuItem.Enabled = true;
            }
            if (Clipboard.GetText() == "")
                粘貼ToolStripMenuItem.Enabled = false;
            else
                粘貼ToolStripMenuItem.Enabled = true;
        }
        private void 撤銷ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (txtBox.CanUndo)
            {
                txtBox.Undo();
                txtBox.ClearUndo();
            }
        }
        private void 剪切ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            txtBox.Cut();
        }
        private void 復制CToolStripMenuItem_Click(object sender, EventArgs e)
        {
            txtBox.Copy();
        }
        private void 粘貼PToolStripMenuItem_Click(object sender, EventArgs e)
        {
            txtBox.Paste();
        }
        private void 洗掉lToolStripMenuItem_Click(object sender, EventArgs e)
        {
            txtBox.SelectedText = string.Empty;
        }
        TextBox txtInput = new TextBox()
        {
            Font = new Font("宋體", 10)
        };
        TextBox txtInputReplace = new TextBox()
        {
            Font = new Font("宋體", 10)
        };
        Label lblSearch = new Label
        {
            Text = "查找內容：",
            Size = new Size(65, 25),
            Location = new Point(5, 22)
        };
        Label lblDirection = new Label
        {
            Text = "查找方向：",
            Size = new Size(65, 25),
            Location = new Point(5, 58)
        };
        Button FindNext = new Button
        {
            Name = "btnFindNext",
            Text = "查找下一項",
            Size = new Size(80, 25),
            Location = new Point(265, 15)
        };
        Button Cancel = new Button
        {
            Name = "btnCancel",
            Text = "取消",
            Size = new Size(80, 25),
            Location = new Point(265, 50)
        };
        RadioButton down = new RadioButton
        {
            Name = "radDown",
            Text = "向下",
            Size = new Size(55, 25),
            Location = new Point(70, 53),
            Checked = true
        };
        RadioButton upward = new RadioButton
        {
            Name = "radUpward",
            Text = "向上",
            Size = new Size(55, 25),
            Location = new Point(140, 53),
            Checked = false
        };
        new Form FindForm = new Form
        {
            Text = "查找文本",
            FormBorderStyle = FormBorderStyle.FixedSingle,
            MaximizeBox = false,
            MinimizeBox = false
        };
        private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //顯示查找對話框
            txtInput.Size = new Size(190, 33);
            txtInput.Location = new Point(70, 15);
            txtInput.Multiline = true;

            FindNext.Click += new EventHandler(Direction_Click);
            //FindNext.Click += new EventHandler(Visible_Click);

            Cancel.Click += new EventHandler(Cancel_Click);

            FindForm.Controls.Add(lblSearch);
            FindForm.Controls.Add(lblDirection);
            FindForm.Controls.Add(txtInput);
            FindForm.Controls.Add(down);
            FindForm.Controls.Add(upward);
            FindForm.Controls.Add(FindNext);
            FindForm.Controls.Add(Cancel);
            FindForm.Top = this.Top + 50;
            FindForm.Left = this.Left + 50;
            FindForm.Height = 120;
            FindForm.Width = 380;
            FindForm.StartPosition = FormStartPosition.CenterParent;
            FindForm.ShowDialog();
        }
        private void Visible_Click(object sender, EventArgs e)
        {
            FindForm.Visible = false;
        }
        private void Cancel_Click(object sender, EventArgs e)
        {
            //關閉對話框
            FindForm.Close();
            ReplaceForm.Close();
        }
        private void Direction_Click(object sender, EventArgs e)
        {
            //選擇字符查找方向
            if (down.Checked == true)
            {
                Find_Click(sender, e);
            }
            else if (upward.Checked == true)
            {
                FindLast_Click(sender, e);
            }
        }
        int nextPosition, firstPosition;
        string word;
        Boolean IF = false;
        private void Find_Click(object sender, EventArgs e)
        {
            txtBox.Focus();
            FindWords(txtInput.Text);
        }
        private void FindWords(string words)
        {
            //向下查找字符
            if (nextPosition >= txtBox.Text.Length)
                nextPosition = 0;
            firstPosition = txtBox.Text.IndexOf(words, nextPosition);
            if (firstPosition == -1)
                nextPosition = 0;
            else
            {
                txtBox.Select(firstPosition, words.Length);
                nextPosition = firstPosition + 1;
            }
            word = words;
            IF = true;
        }
        private void 查找下一個ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //查找下一項，如果未查找過，則顯示查找對話框
            down.Checked = true;
            upward.Checked = false;
            try
            {
                FindWords(word);
            }
            catch
            {
                查找ToolStripMenuItem_Click(sender, e);
            }
        }
        private void FindLast_Click(object sender, EventArgs e)
        {
            txtBox.Focus();
            FindWordsLast(txtInput.Text);
        }
        private void FindWordsLast(string words)
        {
            //向上查找字符
            if (IF == false)
                nextPosition = txtBox.Text.Length;
            if (nextPosition < 0)
                nextPosition = txtBox.Text.Length;

            firstPosition = txtBox.Text.LastIndexOf(words, nextPosition);

            if (firstPosition == -1)
                nextPosition = txtBox.Text.Length;
            else
            {
                txtBox.Select(firstPosition, words.Length);
                nextPosition = firstPosition - 1;
            }
            word = words;
            IF = true;
        }
        private void 查找上一個ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //查找上一項，如果未查找過，則顯示查找對話框
            upward.Checked = true;
            down.Checked = false;
            try
            {
                FindWordsLast(word);
            }
            catch
            {
                查找ToolStripMenuItem_Click(sender, e);
            }
        }
        Label LblReplace = new Label
        {
            Name = "lblReplace",
            Text = "替換：",
            Size = new Size(55, 25),
            Location = new Point(15, 50)
        };
        Form ReplaceForm = new Form
        {
            Text = "替換文本",
            FormBorderStyle = FormBorderStyle.FixedSingle,
            MaximizeBox = false,
            MinimizeBox = false
        };
        private void 替換ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            txtInput.Size = new Size(190, 30);
            txtInput.Location = new Point(70, 12);
            txtInput.Multiline = true;

            txtInputReplace.Size = new Size(190, 30);
            txtInputReplace.Location = new Point(70, 47);
            txtInputReplace.Multiline = true;

            Button Replace = new Button
            {
                Name = "btnReplace",
                Text = "替換",
                Size = new Size(80, 25),
                Location = new Point(265, 15)
            };
            Replace.Click += new EventHandler(Replace_Click);
            Cancel.Click += new EventHandler(Cancel_Click);

            ReplaceForm.Controls.Add(lblSearch);
            ReplaceForm.Controls.Add(LblReplace);
            ReplaceForm.Controls.Add(txtInput);
            ReplaceForm.Controls.Add(txtInputReplace);
            ReplaceForm.Controls.Add(Replace);
            ReplaceForm.Controls.Add(Cancel);
            ReplaceForm.Top = this.Top + 50;
            ReplaceForm.Left = this.Left + 50;
            ReplaceForm.Height = 140;
            ReplaceForm.Width = 380;
            ReplaceForm.StartPosition = FormStartPosition.CenterParent;
            ReplaceForm.ShowDialog();
        }
        private void Replace_Click(object sender, EventArgs e)
        {
            txtBox.Text = txtBox.Text.Replace(txtInput.Text, txtInputReplace.Text);
        }
        private void 全選AToolStripMenuItem_Click(object sender, EventArgs e)
        {
            txtBox.SelectAll();
        }
        private void 自動換行ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //默認自動換行，點擊按鈕打開或關閉自動換行
            if (自動換行ToolStripMenuItem.Checked == true)
            {
                txtBox.WordWrap = false;
                自動換行ToolStripMenuItem.Checked = false;
            }
            else
            {
                txtBox.WordWrap = true;
                自動換行ToolStripMenuItem.Checked = true;
            }
        }
        private void 字體ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //提示用戶從本地計算機安裝的字體中選擇字體字號
            FontDialog fontDialog = new FontDialog();
            if (fontDialog.ShowDialog() == DialogResult.OK)
            {
                txtBox.Font = fontDialog.Font;
            }
        }
        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            //表單的txtBox控制元件隨表單改變而改變的大小
            if (狀態欄ToolStripMenuItem.Checked == true && 工具列TToolStripMenuItem.Checked == true)
                txtBox.Height = this.Height - menuStrip.Height - toolStrip.Height - statusStrip.Height - 39;
            else if (狀態欄ToolStripMenuItem.Checked == false && 工具列TToolStripMenuItem.Checked == true)
                txtBox.Height = this.Height - menuStrip.Height - toolStrip.Height - 39;
            else if (狀態欄ToolStripMenuItem.Checked == true && 工具列TToolStripMenuItem.Checked == false)
                txtBox.Height = this.Height - menuStrip.Height - statusStrip.Height - 39;
            else
                txtBox.Height = this.Height - menuStrip.Height - 39;
            txtBox.Width = this.Width - 16;
        }
        private void 工具列TToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //默認打開工具列，點擊按鈕打開或關閉工具列
            if (工具列TToolStripMenuItem.Checked == true)
            {
                toolStrip.Visible = false;
                工具列TToolStripMenuItem.Checked = false;
                txtBox.Top = 25;
            }
            else if (工具列TToolStripMenuItem.Checked == false)
            {
                toolStrip.Visible = true;
                工具列TToolStripMenuItem.Checked = true;
                txtBox.Top = 50;
            }
            Form1_SizeChanged(sender, e);
        }
        private void 放大ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //放大字體大小
            var fontsize = txtBox.Font.Size;
            var fontFamily = txtBox.Font.FontFamily;
            txtBox.Font = new Font(fontFamily, fontsize + 1);
        }
        private void 縮小ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //縮小字體大小
            var fontsize = txtBox.Font.Size;
            var fontFamily = txtBox.Font.FontFamily;
            txtBox.Font = new Font(fontFamily, fontsize - 1);
        }
        private void 恢復默認縮放ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //恢復默認字體大小
            txtBox.Font = new Font(txtBox.Font.FontFamily, 11);
        }
        private void 狀態欄ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //默認顯示狀態欄，點擊按鈕顯示或關閉狀態欄
            if (狀態欄ToolStripMenuItem.Checked == true)
            {
                statusStrip.Visible = false;
                狀態欄ToolStripMenuItem.Checked = false;
            }
            else if (狀態欄ToolStripMenuItem.Checked == false)
            {
                statusStrip.Visible = true;
                狀態欄ToolStripMenuItem.Checked = true;
            }
            Form1_SizeChanged(sender, e);
        }
        //private int GetStringLen(string s)
        //{
        //    if (!string.IsNullOrEmpty(s))
        //    {
        //        int len = s.Length;
        //        for (int i = 0; i < s.Length; i++)
        //        {
        //            if (s[i] > 255)
        //                len++;
        //        }
        //        return len;
        //    }
        //    return 0;
        //}
        private void 查看幫助HToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //呼叫系統自帶的瀏覽器打開網頁查看幫助
            Process.Start("https://jingyan.baidu.com/article/a24b33cdd86a0f19fe002be9.html");
        }
        private void 關于記事本ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //關于記事本說明
            Label lblTitle = new Label()
            {
                Text = "多功能記事本",
                Size = new Size(150, 25),
                Location = new Point(100, 50)
            };
            Label lblEdition = new Label()
            {
                Text = "版本號：個性測驗版",
                Size = new Size(150, 25),
                Location = new Point(85, 100)
            };
            Label lblMail = new Label()
            {
                Text = "E-Mail：",
                Size = new Size(55, 25),
                Location = new Point(30, 180)
            };
            LinkLabel llblMail = new LinkLabel()
            {
                Text = "[email protected]",
                Size = new Size(110, 25),
                Location = new Point(85, 180)
            };
            Label lblCNDS = new Label()
            {
                Text = "CNDS博客：",
                Size = new Size(65, 25),
                Location = new Point(20, 220)
            };
            LinkLabel llblCNDS = new LinkLabel()
            {
                Text = "https://blog.csdn.net/UFO_Harold",
                Size = new Size(200, 25),
                Location = new Point(85, 220)
            };
            Form about = new Form
            {
                Text = "關于記事本",
                FormBorderStyle = FormBorderStyle.FixedSingle,
                MaximizeBox = false
            };

            llblCNDS.Click += new EventHandler(LlblCNDS_Click);
            about.Controls.Add(lblTitle);
            about.Controls.Add(lblEdition);
            about.Controls.Add(lblMail);
            about.Controls.Add(llblMail);
            about.Controls.Add(lblCNDS);
            about.Controls.Add(llblCNDS);
            about.Top = this.Top + this.Height / 2 - about.Height / 2;
            about.Left = this.Left + this.Width / 2 - about.Width / 2;
            about.StartPosition = FormStartPosition.CenterParent;
            about.ShowDialog();
        }
        private void LlblCNDS_Click(object sender, EventArgs e)
        {
            Process.Start("https://blog.csdn.net/UFO_Harold");
        }
        private void 新建toolStripButton_Click(object sender, EventArgs e)
        {
            新建NToolStripMenuItem_Click(this, e);
        }
        private void 另存為toolStripButton_Click(object sender, EventArgs e)
        {
            另存為ToolStripMenuItem_Click(this, e);
        }
        private void 保存StoolStripButton_Click(object sender, EventArgs e)
        {
            保存SToolStripMenuItem_Click(this, e);
        }
        private void 列印PtoolStripButton_Click(object sender, EventArgs e)
        {
            列印PToolStripMenuItem_Click(this, e);
        }
        private void 剪切toolStripButton_Click(object sender, EventArgs e)
        {
            剪切ToolStripMenuItem_Click(this, e);
        }
        private void 復制CtoolStripButton_Click(object sender, EventArgs e)
        {
            復制CToolStripMenuItem_Click(this, e);
        }
        private void 粘貼PtoolStripButton_Click(object sender, EventArgs e)
        {
            粘貼PToolStripMenuItem_Click(this, e);
        }
        private void 幫助HtoolStripButton_Click(object sender, EventArgs e)
        {
            查看幫助HToolStripMenuItem_Click(this, e);
        }
        private void Timer_Tick(object sender, EventArgs e)
        {
            //顯示編輯游標所在幾行幾列
            int row = txtBox.GetLineFromCharIndex(txtBox.SelectionStart) + 1;
            int col = (txtBox.SelectionStart - txtBox.GetFirstCharIndexFromLine(txtBox.GetLineFromCharIndex(txtBox.SelectionStart))) + 1;
            toolStripStatusLblLocation.Text = "第 " + row + " 行, 第 " + col + " 列";
            toolStripStatusLblNow.Text = "" + DateTime.Now.ToLocalTime();
        }
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            //關閉表單時如果已修改內容，則彈出是否保存對話框，否則直接關閉表單
            if (txtBox.Modified == true)
            {
                DialogResult dr = MessageBox.Show("檔案發生變化，是否更改保存？", "注意", MessageBoxButtons.YesNoCancel);
                if (dr == DialogResult.Yes)
                {
                    保存SToolStripMenuItem_Click(sender, e);
                    return;
                }
                else if (dr == DialogResult.No)
                {
                    return;
                }
                else if (dr == DialogResult.Cancel)
                {
                    e.Cancel = true;
                }
            }
        }
    }
}

運行結果

win10環境下運行程式的結果

注：

  1. 控制元件請自行改名，也可使用默認控制元件名，此次程式的控制元件均已自定義名稱，然后再雙擊控制元件便會自動創建控制元件的事件函式并跳到代碼頁，全數copy代碼到自己新建的程式可能運行不起來，因為控制元件的事件需要雙擊控制元件才跳轉到事件函式，事件方法前出現參考不是為 0 即生效；
  2. 查找上一項下一項功能混用時會有一些bug，達不到預期效果，但能運行，不會報錯，一點邏輯上的問題，目前沒有想到解決方法，大家可自行深入摸索，如有可以改進的地方可聯系博主；
  3. 整個專案原始碼的檔案：（原始碼僅供學習交流使用，如需使用請安裝.NET Framework 4.7.2框架，且圖示可能因檔案路徑不同而無法顯示，修改檔案路徑即可）
  • 藍奏云：https://www.lanzous.com/i9r643e
  • 百度網盤：https://pan.baidu.com/s/1BagLHS9bOG2jvaOcHgeUgA 提取碼：y639
  • Github：https://github.com/Harold-666/Notepad/tree/master

該文是從CSND搬家過來的文章，已修正，覺得CSND不好用，搬至博客園在此安家，總的來說，在博客園的體驗感比在CSDN好很多，往后請各位博友多多指教！我的博客園地址：https://www.cnblogs.com/Harold-popo

  • 狀態欄圖示設定

在這里插入圖片描述

  • 專案檔案目錄

在這里插入圖片描述

 

轉載請註明出處，本文鏈接：https://www.uj5u.com/net/73205.html

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