近一周写的关于记事本的代码，高仿记事本。本人C#入门不久，其中存在代码冗余，但懒得修改了。
经测试运行正常。
一、主窗体设计及代码
1 namespace BestEditor
2 {
3 public partial class Main : Form
4 {
5 private bool isTextChanged;
6 private string path;//记录文件路径（刚新建的文件路径为""，打开的文件路径为原路径）
7
8 public Main()
9 {
10 InitializeComponent();
11 this.Text = "无标题 - 记事本";
12 path = "";
13 }
14
15 /// <summary>
16 /// 初始化窗体时调用
17 /// </summary>
18 /// <param name="sender"></param>
19 /// <param name="e"></param>
20 private void Main_Load(object sender, EventArgs e)
21 {
22 //初始化，撤销、剪切、复制、删除 不可用
23 撤消UToolStripMenuItem.Enabled = false;
24 剪切TToolStripMenuItem.Enabled = false;
25 复制CToolStripMenuItem.Enabled = false;
26 删除LToolStripMenuItem.Enabled = false;
27
28 if (richTextBoxBoard.Equals(""))
29 {
30 查找FToolStripMenuItem.Enabled = false;
31 查找下一个NToolStripMenuItem.Enabled = false;
32 }
33 else
34 {
35 查找FToolStripMenuItem.Enabled = true;
36 查找下一个NToolStripMenuItem.Enabled = true;
37 }
38
39 if (Clipboard.ContainsText())
40 粘贴PToolStripMenuItem.Enabled = true;
41 else
42 粘贴PToolStripMenuItem.Enabled = false;
43
44 toolStripStatusLabel2.Text = "第 1 行，第 1 列";
45 }
46
47 private void 新建NToolStripMenuItem_Click(object sender, EventArgs e)
48 {
49 //如果输入框文字发生变动
50 if (isTextChanged)
51 {
52 saveFileDialog1.FileName = "*.txt";
53 DialogResult dr = MessageBox.Show("是否将更改保存到 " + this.Text + "?", "记事本",
54 MessageBoxButtons.YesNoCancel);
55 if (dr == DialogResult.Yes)
56 {
57 //获取或设置指定要在 SaveFileDialog 中显示的文件类型和说明的筛选器字符串
58 saveFileDialog1.Filter = @"文本文档(*.txt)|*.txt|所有格式|*.txt;*.doc;*.cs;*.rtf;*.sln";
59 if (saveFileDialog1.ShowDialog() == DialogResult.OK)
60 {
61 richTextBoxBoard.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);
62 richTextBoxBoard.Text = "";
63 path = "";
64 }
65 }
66 else if(dr == DialogResult.No)
67 {
68 richTextBoxBoard.Text = "";
69 path = "";
70 }
71 }
72 else
73 {
74 richTextBoxBoard.Text = "";
75 this.Text = "无标题 - 记事本";
76 path = "";
77 }
78 }
79
80 /// <summary>
81 /// 输入框发生变化时触发
82 /// </summary>
83 /// <param name="sender"></param>
84 /// <param name="e"></param>
85 private void richTextBoxBoard_TextChanged(object sender, EventArgs e)
86 {
87 isTextChanged = true;
88 }
89
90 private void 打开OToolStripMenuItem_Click(object sender, EventArgs e)
91 {
92 if (isTextChanged)
93 {
94 saveFileDialog1.FileName = "*.txt";
95 DialogResult dr = MessageBox.Show("是否将更改保存到 " + this.Text + "?", "记事本",
96 MessageBoxButtons.YesNoCancel);
97 if (dr == DialogResult.Yes)
98 {
99 //获取或设置指定要在 SaveFileDialog 中显示的文件类型和说明的筛选器字符串
100 saveFileDialog1.Filter = @"文本文档(*.txt)|*.txt|所有格式|*.txt;*.doc;*.cs;*.rtf;*.sln";
101 if (saveFileDialog1.ShowDialog() == DialogResult.OK)
102 {
103 richTextBoxBoard.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);
104 Text = saveFileDialog1.FileName.Substring(saveFileDialog1.FileName.LastIndexOf("\\")+1)+
105 " - 记事本";
106 }
107 }
108 }
109
110 openFileDialog1.FileName = "";
111
112 if (openFileDialog1.ShowDialog() == DialogResult.OK)
113 {
114 path = openFileDialog1.FileName;
115 Text = path.Substring(path.LastIndexOf("\\") + 1) + " - 记事本";
116 Console.WriteLine("path={0}",path);
117 richTextBoxBoard.LoadFile(path, RichTextBoxStreamType.PlainText);
118 isTextChanged = false;
119 }
120 }
121
122 private void 保存SToolStripMenuItem_Click(object sender, EventArgs e)
123 {
124 if (!("".Equals(path)))
125 {
126 richTextBoxBoard.SaveFile(path, RichTextBoxStreamType.PlainText);
127 isTextChanged = false;
128 }
129 else
130 {
131 saveFileDialog1.Filter = @"文本文档(*.txt)|*.txt|所有格式|*.txt;*.doc;*.cs;*.rtf;*.sln";
132 if (saveFileDialog1.ShowDialog() == DialogResult.OK)
133 {
134 richTextBoxBoard.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);
135 path = saveFileDialog1.FileName;
136 this.Text = path.Substring(path.LastIndexOf("\\") + 1) + " - 记事本";
137 isTextChanged = false;
138 }
139 }
140 }
141
142 private void 另存为AToolStripMenuItem_Click(object sender, EventArgs e)
143 {
144 saveFileDialog1.Filter = @"文本文档(*.txt)|*.txt|所有格式|*.txt;*.doc;*.cs;*.rtf;*.sln";
145 if (saveFileDialog1.ShowDialog() == DialogResult.OK)
146 {
147 richTextBoxBoard.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);
148 path = saveFileDialog1.FileName;
149 this.Text = path.Substring(path.LastIndexOf("\\") + 1) + " - 记事本";
150 isTextChanged = false;
151 }
152 }
153
154 private void 页面设置UToolStripMenuItem_Click(object sender, EventArgs e)
155 {
156 pageSetupDialog1.Document = printDocument1;
157 pageSetupDialog1.ShowDialog();
158 }
159
160 private void 打印PToolStripMenuItem_Click(object sender, EventArgs e)
161 {
162 printDialog1.Document = printDocument1;
163 printDialog1.ShowDialog();
164 }
165
166 private void 退出XToolStripMenuItem_Click(object sender, EventArgs e)
167 {
168 this.Close();
169 }
170
171 private void 撤消UToolStripMenuItem_Click(object sender, EventArgs e)
172 {
173 richTextBoxBoard.Undo();
174 }
175
176 private void 编辑EToolStripMenuItem_Click(object sender, EventArgs e)
177 {
178 if (richTextBoxBoard.CanUndo)
179 撤消UToolStripMenuItem.Enabled = true;
180
181 if (richTextBoxBoard.SelectionLength > 0)
182 {
183 剪切TToolStripMenuItem.Enabled = true;
184 复制CToolStripMenuItem.Enabled = true;
185 删除LToolStripMenuItem.Enabled = true;
186 }
187 else
188 {
189 剪切TToolStripMenuItem.Enabled = false;
190 复制CToolStripMenuItem.Enabled = false;
191 删除LToolStripMenuItem.Enabled = false;
192 }
193
194 if (richTextBoxBoard.Equals(""))
195 {
196 查找FToolStripMenuItem.Enabled = false;
197 查找下一个NToolStripMenuItem.Enabled = false;
198 }
199 else
200 {
201 查找FToolStripMenuItem.Enabled = true;
202 查找下一个NToolStripMenuItem.Enabled = true;
203 }
204
205 if (Clipboard.ContainsText())
206 粘贴PToolStripMenuItem.Enabled = true;
207 else
208 粘贴PToolStripMenuItem.Enabled = false;
209 }
210
211 private void 剪切TToolStripMenuItem_Click(object sender, EventArgs e)
212 {
213 richTextBoxBoard.Cut();
214 }
215
216 private void 复制CToolStripMenuItem_Click(object sender, EventArgs e)
217 {
218 richTextBoxBoard.Copy();
219 }
220
221 private void 粘贴PToolStripMenuItem_Click(object sender, EventArgs e)
222 {
223 richTextBoxBoard.Paste();
224 }
225
226 private void 删除LToolStripMenuItem_Click(object sender, EventArgs e)
227 {
228 richTextBoxBoard.SelectedText = "";
229 }
230
231 /// <summary>
232 /// 不同窗体之间通讯
233 /// </summary>
234 /// <param name="sender"></param>
235 /// <param name="e"></param>
236 private void 查找FToolStripMenuItem_Click(object sender, EventArgs e)
237 {
238 Search search = new Search();
239 search.Owner = this;
240 search.Show();
241 }
242
243 private void 查找下一个NToolStripMenuItem_Click(object sender, EventArgs e)
244 {
245 Search search = new Search();
246 search.Owner = this;
247 search.Show();
248 }
249
250 private void 替换RToolStripMenuItem_Click(object sender, EventArgs e)
251 {
252 Change change = new Change();
253 change.Owner = this;
254 change.Show();
255 }
256
257 private void 转到GToolStripMenuItem_Click(object sender, EventArgs e)
258 {
259 Goto gt = new Goto();
260 gt.Owner = this;
261 gt.Show();
262 }
263
264 private void 全选AToolStripMenuItem_Click(object sender, EventArgs e)
265 {
266 richTextBoxBoard.SelectAll();
267 }
268
269 private void 时间日期DToolStripMenuItem_Click(object sender, EventArgs e)
270 {
271 string front = richTextBoxBoard.Text.Substring(0, richTextBoxBoard.SelectionStart);
272 string back = richTextBoxBoard.Text.Substring(richTextBoxBoard.SelectionStart,
273 richTextBoxBoard.Text.Length - richTextBoxBoard.SelectionStart);
274 richTextBoxBoard.Text = front + DateTime.Now.ToString() + back;
275 }
276
277 private void 自动换行WToolStripMenuItem_Click(object sender, EventArgs e)
278 {
279 if (richTextBoxBoard.WordWrap)
280 {
281 自动换行WToolStripMenuItem.Checked = false;
282 richTextBoxBoard.WordWrap = false;
283 }
284 else
285 {
286 自动换行WToolStripMenuItem.Checked = true;
287 richTextBoxBoard.WordWrap = true;
288 }
289 }
290
291 private void 字体FToolStripMenuItem_Click(object sender, EventArgs e)
292 {
293 fontDialog1.ShowDialog();
294 richTextBoxBoard.SelectionFont = fontDialog1.Font;
295 }
296
297 /// <summary>
298 /// 控制底部状态栏显示与否
299 /// </summary>
300 /// <param name="sender"></param>
301 /// <param name="e"></param>
302 private void 状态栏SToolStripMenuItem_Click(object sender, EventArgs e)
303 {
304 if (状态栏SToolStripMenuItem.Checked)
305 {
306 状态栏SToolStripMenuItem.Checked = false;
307 statusStrip1.Visible = false;
308 }
309 else
310 {
311 状态栏SToolStripMenuItem.Checked = true;
312 statusStrip1.Visible = true;
313 }
314 }
315
316 /// <summary>
317 /// 输入框光标位置变化时触发
318 /// </summary>
319 /// <param name="sender"></param>
320 /// <param name="e"></param>
321 private void richTextBoxBoard_SelectionChanged(object sender, EventArgs e)
322 {
323 string[] str = richTextBoxBoard.Text.Split(‘\r‘, ‘\n‘);
324 int row = 1, column = 1, pos = richTextBoxBoard.SelectionStart;
325
326 foreach(string s in str)
327 Console.WriteLine(s);
328 Console.WriteLine("pos={0}",pos);
329
330 for (int i = 0; pos - str[i].Length > 0; i++)
331 {
332 pos = pos - str[i].Length - 1;
333 row = i + 2;
334 }
335 column = pos + 1;
336 toolStripStatusLabel2.Text = "第 " + row + " 行，第 " + column + " 列";
337 }
338
339 private void 关于记事本AToolStripMenuItem_Click(object sender, EventArgs e)
340 {
341 AboutBox ab = new AboutBox();
342 ab.Show();
343 }
344
345 private void 查看帮助HToolStripMenuItem_Click(object sender, EventArgs e)
346 {
347 //调用系统内部的notepad.chm文件
348 }
349
350 /// <summary>
351 /// 点击窗体右上角关闭按钮触发
352 /// </summary>
353 /// <param name="sender"></param>
354 /// <param name="e"></param>
355 private void Main_FormClosing(object sender, FormClosingEventArgs e)
356 {
357 if (isTextChanged)
358 {
359 if (!("".Equals(path)))
360 {
361 DialogResult dr = MessageBox.Show("是否将更改保存到"+path+"?","记事本",
362 MessageBoxButtons.YesNoCancel);
363 if (dr == DialogResult.Yes)
364 richTextBoxBoard.SaveFile(path, RichTextBoxStreamType.PlainText);
365 else if (dr == DialogResult.No)
366 e.Cancel = false;
367 else
368 e.Cancel = true;//不关闭
369 }
370 else
371 {
372 DialogResult dr = MessageBox.Show("是否将更改保存到 无标题?", "记事本",
373 MessageBoxButtons.YesNoCancel);
374 if (dr == DialogResult.Yes)
375 {
376 saveFileDialog1.Filter = @"文本文档(*.txt)|*.txt|所有格式|*.txt;*.doc;*.cs;*.rtf;*.sln";
377 if (saveFileDialog1.ShowDialog() == DialogResult.OK)
378 richTextBoxBoard.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText);
379 else
380 e.Cancel = true;
381 }
382 else if (dr == DialogResult.No)
383 e.Cancel = false;
384 else
385 e.Cancel = true;
386 }
387 }
388 }
389 }
390 }
二、查找子窗体设计及代码
1 namespace BestEditor
2 {
3 public partial class Search : Form
4 {
5 private RichTextBox rtb = new RichTextBox();
6
7 public Search()
8 {
9 InitializeComponent();
10 }
11
12 /// <summary>
13 /// 初始化时得到主窗口的通讯数据
14 /// </summary>
15 /// <param name="sender"></param>
16 /// <param name="e"></param>
17 private void Search_Load(object sender, EventArgs e)
18 {
19 Main main = (Main)this.Owner;
20 this.rtb = main.richTextBoxBoard;
21 }
22
23 /// <summary>
24 /// 取消
25 /// </summary>
26 /// <param name="sender"></param>
27 /// <param name="e"></param>
28 private void button2_Click(object sender, EventArgs e)
29 {
30 this.Close();
31 }
32
33 private void button1_Click(object sender, EventArgs e)
34 {
35 string str = rtb.Text;//文件内容
36 string subSearch = textBox1.Text;//查找内容
37 string initString = subSearch;
38 int pos = rtb.SelectionStart;//光标位置
39
40 if (!checkBox1.Checked)
41 {
42 str = str.ToLower();
43 subSearch = subSearch.ToLower();
44 }
45
46 if (radioButton1.Checked)//向上查找
47 {
48 if (rtb.SelectionLength > 0)
49 pos = pos + rtb.SelectionLength - 1;
50
51 str = str.Substring(0, pos);
52 if (subSearch != "" && (pos = str.LastIndexOf(subSearch, pos)) != -1)
53 {
54 //输入框得到焦点并选中查找的内容
55 rtb.Focus();
56 rtb.SelectionStart = pos;
57 rtb.SelectionLength = subSearch.Length;
58 }
59 else
60 MessageBox.Show("找不到\"" + initString + "\"", "记事本",
61 MessageBoxButtons.OK, MessageBoxIcon.Information);
62 }
63 else
64 {
65 if (rtb.SelectionLength > 0)
66 pos = pos + 1;
67 if (subSearch != "" && (pos = str.IndexOf(subSearch, pos)) != -1)
68 {
69 rtb.Focus();
70 rtb.SelectionStart = pos;
71 rtb.SelectionLength = subSearch.Length;
72 }
73 else
74 MessageBox.Show("找不到\"" + subSearch + "\"", "记事本",
75 MessageBoxButtons.OK, MessageBoxIcon.Information);
76 }
77 }
78 }
79 }
三、替换子窗体设计及其代码
1 namespace BestEditor
2 {
3 public partial class Change : Form
4 {
5 private RichTextBox rtb = new RichTextBox();
6
7 public Change()
8 {
9 InitializeComponent();
10 }
11
12 private void Change_Load(object sender, EventArgs e)
13 {
14 Main main = (Main)this.Owner;
15 this.rtb = main.richTextBoxBoard;
16 button1.Enabled = false;
17 button2.Enabled = false;
18 button3.Enabled = false;
19 }
20
21 /// <summary>
22 /// 查找下一个
23 /// </summary>
24 /// <param name="sender"></param>
25 /// <param name="e"></param>
26 private void button1_Click(object sender, EventArgs e)
27 {
28 string str = rtb.Text;
29 string subSearch = textBox1.Text;
30 string initString = subSearch;
31 int pos = rtb.SelectionStart;
32
33 if (!checkBox1.Checked)
34 {
35 str = str.ToLower();
36 subSearch = subSearch.ToLower();
37 }
38
39 if (rtb.SelectionLength > 0)
40 pos = pos + 1;
41 if ((pos = str.IndexOf(subSearch, pos)) != -1)
42 {
43 rtb.Focus();
44 rtb.SelectionStart = pos;
45 rtb.SelectionLength = subSearch.Length;
46 }
47 else
48 MessageBox.Show("找不到\"" + initString + "\"", "记事本",
49 MessageBoxButtons.OK, MessageBoxIcon.Information);
50 }
51
52 private void textBox1_TextChanged(object sender, EventArgs e)
53 {
54 bool flag = textBox1.Text != "";
55 button1.Enabled = flag;
56 button2.Enabled = flag;
57 button3.Enabled = flag;
58 }
59
60 /// <summary>
61 /// 取消
62 /// </summary>
63 /// <param name="sender"></param>
64 /// <param name="e"></param>
65 private void button4_Click(object sender, EventArgs e)
66 {
67 this.Close();
68 }
69
70 /// <summary>
71 /// 替换
72 /// </summary>
73 /// <param name="sender"></param>
74 /// <param name="e"></param>
75 private void button2_Click(object sender, EventArgs e)
76 {
77 string str = rtb.Text;
78 string subSearch = textBox1.Text;
79 string initString = subSearch;
80 string changeTo = textBox2.Text;
81 string front;
82 string dest;
83 string back;
84 int pos = rtb.SelectionStart;
85
86 if (!checkBox1.Checked)
87 {
88 str = str.ToLower();
89 subSearch = subSearch.ToLower();
90 }
91
92 if (rtb.SelectionLength > 0)
93 {
94 if (rtb.SelectedText.Equals(subSearch))
95 {
96 //将文本框字符串分段，替换后再组合
97 front = rtb.Text.Substring(0,pos);
98 dest = changeTo;
99 back = rtb.Text.Substring(pos + subSearch.Length, rtb.Text.Length - pos - subSearch.Length);
100 rtb.Text = front + dest + back;
101 }
102 pos = pos + 1;
103 }
104
105 if ((pos = str.IndexOf(subSearch, pos)) != -1)
106 {
107 rtb.Focus();
108 rtb.SelectionStart = pos;
109 rtb.SelectionLength = subSearch.Length;
110 }
111 else
112 MessageBox.Show("找不到\"" + initString + "\"", "记事本",
113 MessageBoxButtons.OK, MessageBoxIcon.Information);
114 }
115
116 /// <summary>
117 /// 全部替换
118 /// </summary>
119 /// <param name="sender"></param>
120 /// <param name="e"></param>
121 private void button3_Click(object sender, EventArgs e)
122 {
123 string str = rtb.Text;
124 string subSearch = textBox1.Text;
125 string changeTo = textBox2.Text;
126 string front;
127 string dest;
128 string back;
129 int pos = 0;
130
131 if (!checkBox1.Checked)
132 {
133 str = str.ToLower();
134 subSearch = subSearch.ToLower();
135 }
136
137 while ((pos=str.IndexOf(subSearch,pos))!=-1)
138 {
139 front = rtb.Text.Substring(0, pos);
140 dest = changeTo;
141 back = rtb.Text.Substring(pos + subSearch.Length, rtb.Text.Length - pos - subSearch.Length);
142 rtb.Text = front + dest + back;
143 if (!checkBox1.Checked)
144 str = rtb.Text.ToLower();
145 }
146 }
147 }
148 }
四、转到子窗体设计及其代码
1 namespace BestEditor
2 {
3 public partial class Goto : Form
4 {
5 private RichTextBox rtb = new RichTextBox();
6
7 public Goto()
8 {
9 InitializeComponent();
10 }
11
12 private void Goto_Load(object sender, EventArgs e)
13 {
14 Main main = (Main)this.Owner;
15 this.rtb = main.richTextBoxBoard;
16 }
17
18 private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
19 {
20 if ((e.KeyChar < 48 || e.KeyChar > 57) && e.KeyChar != 8 && e.KeyChar != 13)
21 {
22 e.Handled = true;
23 MessageBox.Show("只能接收数字","记事本",MessageBoxButtons.OK,MessageBoxIcon.Error);
24 }
25 }
26
27 private void button2_Click(object sender, EventArgs e)
28 {
29 this.Close();
30 }
31
32 /// <summary>
33 /// 确定
34 /// </summary>
35 /// <param name="sender"></param>
36 /// <param name="e"></param>
37 private void button1_Click(object sender, EventArgs e)
38 {
39 int row = int.Parse(textBox1.Text);
40 int pos = 0;
41 string[] str = rtb.Text.Split(‘\r‘, ‘\n‘);
42
43 if (row < 1|| row > str.Length)
44 MessageBox.Show("行数超出范围", "记事本 - 跳行", MessageBoxButtons.OK);
45 else
46 {
47 for (int i = 1; i < row; i++)
48 pos = pos + str[i-1].Length + 1;
49 this.Close();
50 rtb.Focus();
51 rtb.SelectionStart = pos;
52 }
53 }
54 }
55 }
五、“关于”对话框
直接插入“关于”对话框即可
Ps:
编写过程中有参考到以下代码：http://blog.csdn.net/mathewsking/article/details/3645753，在此谢谢博主的思路启发！
时间： 2024-11-07 14:49:59