winform 练习--记事本

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  1 public partial class Form1 : Form
  2     {
  3         public Form1()
  4         {
  5             InitializeComponent();
  6         }
  7 
  8         // 用于存储当前操作的文件的名称
  9         private string textFileName = "";
 10         private string filePath = "";
 11         private void 新建_Click(object sender, EventArgs e)
 12         {
 13             textFileName = "";
 14             // 新建一个文本时，若输入框中的内容不为空，应先提示“是否保存”
 15             if (inputInfo.Text != string.Empty)
 16             {
 17                 // 若用户选择“是”，应弹出保存文件的对话框
 18                 if (MessageBox.Show("是否保存当前文件？", "Mickey温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information)
 19                     == DialogResult.Yes)
 20                 {
 21                     // 保存文件
 22                     Save();
 23                     Text = "新建-Mickey记事本";
 24                     inputInfo.Text = "";
 25                 }
 26                 else if (MessageBox.Show("是否保存当前文件？", "Mickey温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information)
 27                     == DialogResult.No)
 28                 {
 29                     // 用户选择不保存时将输入框中的内容清除
 30                     inputInfo.Text = "";
 31                 }
 32             }
 33         }
 34         private void 打开_Click(object sender, EventArgs e)
 35         {
 36             OpenFileDialog openFile = new OpenFileDialog();
 37             openFile.Filter = "文本文件(*.txt)|*.txt";
 38             if (openFile.ShowDialog() == DialogResult.OK)
 39             {
 40                 StreamReader sr = new StreamReader(openFile.FileName);
 41                 inputInfo.Text = sr.ReadToEnd();
 42                 sr.Close();
 43                 FileInfo fileInfo = new FileInfo(openFile.FileName);
 44                 // 把标题改为打开的文件的名称
 45                 Text = "*" + fileInfo.Name + "-Mickey记事本";
 46                 textFileName = fileInfo.Name;
 47             }
 48         }
 49 
 50        
 51         private void 保存_Click(object sender, EventArgs e)
 52         {
 53             Save();
 54         }
 55         // “保存”
 56         private void Save()
 57         {
 58             if (!textFileName.Equals(""))
 59             {
 60                 SaveFileDialog saveFile = new SaveFileDialog();
 61                 // 默认保存格式
 62                 saveFile.Filter = "文本文件(*.txt)|*.txt";
 63                 StreamWriter sw = new StreamWriter(filePath, false);
 64                 sw.Write(inputInfo.Text);
 65                 sw.Close();
 66 
 67                 MessageBox.Show("文件保存成功！", "Mickey温馨提示");
 68                 filePath = saveFile.FileName;
 69                 // 把标题改为打开的文件的名称
 70                 Text = textFileName + "-Mickey记事本";
 71             }
 72             else
 73             {
 74                 // 成员变量为“”，说明文件第一次保存，执行“另存为”操作
 75                 HoldFile();
 76             }
 77         }
 78 
 79        
 80         private void HoldFile()
 81         {
 82             // 若用户选择另保存文件
 83             SaveFileDialog saveFile = new SaveFileDialog();
 84             // 默认保存格式
 85             saveFile.Filter = "文本文件(*.txt)|*.txt";
 86             if (saveFile.ShowDialog() == DialogResult.OK)
 87             {
 88                 StreamWriter sw = new StreamWriter(saveFile.FileName, false);
 89                 sw.WriteLine(inputInfo.Text);
 90                 sw.Close();
 91                 MessageBox.Show("文件保存成功！", "Mickey温馨提示");
 92                 filePath = saveFile.FileName;
 93             }
 94             // 判断是第一次保存还是第二次
 95             if (textFileName.Equals(""))
 96             {
 97                 FileInfo fileInfo = new FileInfo(saveFile.FileName);
 98                 Text = fileInfo.Name + "-Mickey记事本";
 99                 textFileName = fileInfo.Name;
100             }
101             else
102             {
103                 // 把标题改为打开的文件的名称
104                 Text = textFileName + "-Mickey记事本";
105             }
106         }
107        
108         private void 另存为_Click(object sender, EventArgs e)
109         {
110             HoldFile();
111         }
112  
113        
114         private void 退出_Click(object sender, EventArgs e)
115         {
116             // 退出时应提示用户是否保存当前文本文件
117             DialogResult result = MessageBox.Show("是否将更改保存？", "Mickey温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
118             if (result == DialogResult.Yes)
119             {
120                 Save();
121                 Application.Exit();
122             }
123             else if (result == DialogResult.No)
124             {
125                 Application.Exit();
126             }
127         }
128   
129         // 这个成员变量用来存储用户选择进行操作的字符串
130         private string selectedInfo = "";
131        
132         private void 编辑_Click(object sender, EventArgs e)
133         {
134             if ((inputInfo.SelectedText.Equals("")) && (selectedInfo.Equals("")))
135             {
136                 剪切.Enabled = false;
137                 复制.Enabled = false;
138                 粘贴.Enabled = false;
139                 删除.Enabled = false;
140             }
141             else
142             {
143                 剪切.Enabled = true;
144                 复制.Enabled = true;
145                 粘贴.Enabled = true;
146                 删除.Enabled = true;
147             }
148         }
149        
150         private void 撤销_Click(object sender, EventArgs e)
151         {
152             this.inputInfo.Undo();
153         }
154         private void 剪切_Click(object sender, EventArgs e)
155         {
156             selectedInfo = inputInfo.SelectedText;
157             this.inputInfo.Cut();
158         }
159         private void 复制_Click(object sender, EventArgs e)
160         {
161             selectedInfo = inputInfo.SelectedText;
162             this.inputInfo.Copy();
163         }
164         private void 粘贴_Click(object sender, EventArgs e)
165         {
166             this.inputInfo.Paste();
167         }
168         private void 删除_Click(object sender, EventArgs e)
169         {
170             this.inputInfo.SelectedText = "";
171         }
172  
173 
174        
175         private void 查找_Click(object sender, EventArgs e)
176         {
177             if (inputInfo.Text == string.Empty)
178             {
179                 MessageBox.Show("请确保要查找的文件的内容不为空！", "Mickey温馨提示");
180             }
181             else
182             {
183                 //Form2 fr2 = new Form2();
184                 //fr2.sender(this);
185                 //fr2.Show();
186             }
187         }
188         private void 查找下一个_Click(object sender, EventArgs e)
189         {
190         }
191        
192         private void 全选_Click(object sender, EventArgs e)
193         {
194             this.inputInfo.SelectAll();
195             //全选_Click(sender,e);
196         }
197         private void 日期时间_Click(object sender, EventArgs e)
198         {
199             inputInfo.Text += "现在时间是:" + DateTime.Now.ToString();
200         }
201  
202 
203        
204         private void 自动换行_Click(object sender, EventArgs e)
205         {
206             if (自动换行.Checked == true)
207             {
208                 inputInfo.WordWrap = true;
209             }
210             else
211             {
212                 inputInfo.WordWrap = false;
213             }
214         }
215 
216        
217         private void 字体_Click(object sender, EventArgs e)
218         {
219             FontDialog fontDialog = new FontDialog();
220             if (fontDialog.ShowDialog() == DialogResult.OK)
221             {
222                 inputInfo.Font = fontDialog.Font;
223             }
224         }
225  
226        
227         private void 查看_Click(object sender, EventArgs e)
228         {
229             if (inputInfo.Text.Length > 0)
230             {
231                 状态栏.Enabled = true;
232             }
233             else
234             {
235                 状态栏.Enabled = false;
236             }
237         }
238 
239         private void 状态栏_Click(object sender, EventArgs e)
240         {
241             if (状态栏.Checked == true)
242             {
243                 状态栏.Checked = false;
244                 statusStrip1.Visible = false;
245             }
246             else
247             {
248                 状态栏.Checked = true;
249                 statusStrip1.Visible = true;
250 
251             }
252 
253         }
254 
255         private void 工具栏_Click(object sender, EventArgs e)
256         {
257             if (工具栏.Checked == true)
258             {
259                 工具栏.Checked = false;
260                 toolStrip1.Visible = false;
261                 inputInfo.Location = new Point(0, 24);
262             }
263             else
264             {
265                 工具栏.Checked = true;
266                 toolStrip1.Visible = true;
267                 inputInfo.Location = new Point(0, 49);
268             }
269 
270         }
271 
272         private void 查看帮助_Click(object sender, EventArgs e)
273         {
274             string help = @"C:Users狗狗MickeyDesktophelp.txt";
275             Help.ShowHelp(this, help);
276         }
277 
278 
279         private void 关于记事本_Click(object sender, EventArgs e)
280         {
281             Form about = new Form2();
282             about.Show();
283         }
284         private void inputInfo_TextChanged(object sender, EventArgs e)
285         {
286             string num = inputInfo.TextLength.ToString();
287             toolStripStatusLabel2.Text = num;
288 
289             if (inputInfo.Text != "")
290             {
291                 撤销UToolStripMenuItem.Enabled = true;
292                 剪切TToolStripMenuItem.Enabled = true;
293                 复制CToolStripMenuItem.Enabled = true;
294                 删除DToolStripMenuItem.Enabled = true;
295                 全选AToolStripMenuItem.Enabled = true;
296             }
297             else
298             {
299                 撤销UToolStripMenuItem.Enabled = false;
300                 剪切TToolStripMenuItem.Enabled = false;
301                 复制CToolStripMenuItem.Enabled = false;
302                 删除DToolStripMenuItem.Enabled = false;
303                 全选AToolStripMenuItem.Enabled = false;
304             }
305 
306             //if (inputInfo.)
307             //{
308             //    粘贴PToolStripMenuItem.Enabled = true;
309             //}
310             
311         }
312         private void 撤销ToolStripMenuItem_Click(object sender, EventArgs e)
313         {
314             this.inputInfo.Undo();
315         }
316 
317         private void 剪切ToolStripMenuItem_Click(object sender, EventArgs e)
318         {
319                 this.inputInfo.Cut();
320                 
321         }
322 
323         private void 复制ToolStripMenuItem_Click(object sender, EventArgs e)
324         {
325                 this.inputInfo.Copy();
326         }
327         private void 粘贴ToolStripMenuItem_Click(object sender, EventArgs e)
328         {
329             this.inputInfo.Paste();
330         }
331         private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
332         {
333                 this.inputInfo.SelectedText = "";
334         }
335         private void 全选ToolStripMenuItem_Click(object sender, EventArgs e)
336         {
337                 this.inputInfo.SelectAll();
338         }
339     }