【Form窗体】文件操作完成记事本功能

对于 文件操作常用的就是文件读写，文件打开，文件保存等本文将制作一个记事本，完成基本的文件操作。并对常用控件包括对话框和菜单以及状态栏综合运用。

下面谈下设计思想，然后再看具体实现。（部分功能代码参考网络资源）

在布局上样式和计算机自带记事本功能都是一致的，这里难点和关键点就是逻辑方面的判断。剪切复制等可用不可用逻辑问题。以及何时保存，还有就是打印等需要一些API（自带方法）。现在把整个界面布局粘贴如下：（下面红色为打印所需对话框）



1，两个核心方法：保存和另存为




View Code

private void MainForm_Load(object sender, EventArgs e) { this.WindowState = FormWindowState.Maximized; this.time.Text = DateTime.Now.ToString(); } /// 保存文件 void SaveText() { try { saveFileDialog1.FileName = ""; saveFileDialog1.Filter = "文本文件(*.txt)|*.txt"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { string MyFileName = saveFileDialog1.FileName; StreamWriter sw = new StreamWriter(MyFileName, true, Encoding.Default); sw.WriteLine(rtxContent.Text); this.Text = MyFileName.Substring(MyFileName.LastIndexOf("\\") + 1); } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { } } //另存为 private void HoldFile() { saveFileDialog1.Filter = "文本文件(*.txt)|*.txt"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { StreamWriter sw = new StreamWriter(saveFileDialog1.FileName, false); sw.WriteLine(rtxContent.Text); sw.Close(); MessageBox.Show("文件保存成功！", "温馨提示"); } // 判断是第一次保存还是第二次 if (saveFileDialog1.Equals("")) { FileInfo fileInfo = new FileInfo(saveFileDialog1.FileName); Text = fileInfo.Name + "-记事本"; saveFileDialog1.FileName = fileInfo.Name; } else { // 把标题改为打开的文件的名称 Text = saveFileDialog1.FileName + "-Mickey记事本"; } }

2，打开文件，涉及文件读取（文件流读取）




View Code

//打开文件 private void FileMenuOpen_Click(object sender, EventArgs e) { try { if (rtxContent.Text != "") { SaveText(); //检查是否保存当前文件  } else { if (openFileDialog1.ShowDialog() == DialogResult.OK) { StreamReader sr = new StreamReader(openFileDialog1.FileName); rtxContent.Text = sr.ReadToEnd(); sr.Close(); FileInfo fileInfo = new FileInfo(openFileDialog1.FileName); // 把标题改为打开的文件的名称 Text = "*" + fileInfo.Name + "-白宁超记事本"; openFileDialog1.FileName = fileInfo.Name; } } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { } }

3，字体颜色设置以及所用对话框




View Code

//设置字体 private void FileMenuFont_Click(object sender, EventArgs e) { if (fontDialog1.ShowDialog() == DialogResult.OK) { rtxContent.Font = fontDialog1.Font; } } //设置颜色 private void FileMenuColor_Click(object sender, EventArgs e) { if ( colorDialog1.ShowDialog() == DialogResult.OK) { rtxContent.ForeColor = colorDialog1.Color; } }

4，页面设置和打印




View Code

//页面设置 private void FileMenuPage_Click(object sender, EventArgs e) { this.pageSetupDialog1.Document = this.printDocument1; pageSetupDialog1.ShowDialog(); } //打印 private void FileMenuDY_Click(object sender, EventArgs e) { if (rtxContent.Text.Length < 1) { MessageBox.Show("请确保要打印的文件的内容不为空！", "温馨提示"); return; } else { // 设置Document的属性 this.printDialog1.Document = this.printDocument1; this.printDialog1.PrinterSettings = this.pageSetupDialog1.PrinterSettings; if (this.printDialog1.ShowDialog() == DialogResult.OK) { try { this.printDocument1.Print(); } catch (Exception ex) { MessageBox.Show(ex.Message, "错误信息", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } }

5，窗体视图显示：水平，竖直，层叠




View Code

//多窗体水平显示 private void FileMenuH_Click(object sender, EventArgs e) { LayoutMdi(MdiLayout.TileHorizontal); } //多窗体垂直显示 private void FileMenuV_Click(object sender, EventArgs e) { LayoutMdi(MdiLayout.TileVertical); } //多窗体层叠显示 private void FileMenuC_Click(object sender, EventArgs e) { LayoutMdi(MdiLayout.Cascade); }

6，根据文本变化而状态变化




View Code

//根据文本变化而状态变化 private void rtxContent_TextChanged(object sender, EventArgs e) { this.total.Text = "当前计数" + this.rtxContent.Text.Length.ToString(); }

以下是全部完整代码（经测试可以正常运行）




View Code

 public partial class MainForm : Form { public MainForm() { InitializeComponent(); } //窗体加载private void MainForm_Load(object sender, EventArgs e) { this.WindowState = FormWindowState.Maximized; this.time.Text = DateTime.Now.ToString(); } /// 保存文件 void SaveText() { try { saveFileDialog1.FileName = ""; saveFileDialog1.Filter = "文本文件(*.txt)|*.txt"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { string MyFileName = saveFileDialog1.FileName; StreamWriter sw = new StreamWriter(MyFileName, true, Encoding.Default); sw.WriteLine(rtxContent.Text); this.Text = MyFileName.Substring(MyFileName.LastIndexOf("\\") + 1); } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { } } //另存为 private void HoldFile() { saveFileDialog1.Filter = "文本文件(*.txt)|*.txt"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { StreamWriter sw = new StreamWriter(saveFileDialog1.FileName, false); sw.WriteLine(rtxContent.Text); sw.Close(); MessageBox.Show("文件保存成功！", "温馨提示"); } // 判断是第一次保存还是第二次 if (saveFileDialog1.Equals("")) { FileInfo fileInfo = new FileInfo(saveFileDialog1.FileName); Text = fileInfo.Name + "-记事本"; saveFileDialog1.FileName = fileInfo.Name; } else { // 把标题改为打开的文件的名称 Text = saveFileDialog1.FileName + "-Mickey记事本"; } } //新建 private void FileMenuNew_Click(object sender, EventArgs e) { if (rtxContent.Text != "") { if (MessageBox.Show("是否保存当前文件？", "温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information)== DialogResult.Yes) { // 保存文件  SaveText(); Text = "新建-Mickey记事本"; rtxContent.Text = ""; } else if (MessageBox.Show("是否保存当前文件？", "温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information)== DialogResult.No) { // 用户选择不保存时将输入框中的内容清除 rtxContent.Text = ""; } } }//打开文件 private void FileMenuOpen_Click(object sender, EventArgs e) { try { if (rtxContent.Text != "") { SaveText(); //检查是否保存当前文件  } else { if (openFileDialog1.ShowDialog() == DialogResult.OK) { StreamReader sr = new StreamReader(openFileDialog1.FileName); rtxContent.Text = sr.ReadToEnd(); sr.Close(); FileInfo fileInfo = new FileInfo(openFileDialog1.FileName); // 把标题改为打开的文件的名称 Text = "*" + fileInfo.Name + "-白宁超记事本"; openFileDialog1.FileName = fileInfo.Name; } } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { } } //保存 private void FileMenuSave_Click(object sender, EventArgs e) { SaveText(); } //另存为 private void FileMenuLingcun_Click(object sender, EventArgs e) { HoldFile(); } //关闭 private void FileMenuClose_Click(object sender, EventArgs e) { DialogResult result = MessageBox.Show("是否将更改保存？", "温馨提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information); if (result == DialogResult.Yes) { SaveText(); Application.Exit(); } else if (result == DialogResult.No) { Application.Exit(); } } private string selectedInfo = "";//定义选中文本 private void 编辑EToolStripMenuItem_Click(object sender, EventArgs e) { if ((rtxContent.SelectedText.Equals("")) && (rtxContent.Equals(""))) { FileMenuCut.Enabled = false; FileMenuCopy.Enabled = false; FileMenuPaste.Enabled = false; FileMenuDelte.Enabled = false; } else { FileMenuCut.Enabled = true; FileMenuCopy.Enabled = true; FileMenuPaste.Enabled = true; FileMenuDelte.Enabled = true; } } //复制 private void FileMenuCopy_Click(object sender, EventArgs e) { rtxContent.Copy(); } //剪切 private void FileMenuCut_Click(object sender, EventArgs e) { selectedInfo = rtxContent.SelectedText; rtxContent.Cut(); rtxContent.SelectedText = ""; } //粘贴 private void FileMenuPaste_Click(object sender, EventArgs e) { rtxContent.Paste(); } //删除 private void FileMenuDelte_Click(object sender, EventArgs e) { rtxContent.Text = ""; } //撤销 private void FileMenuCancel_Click(object sender, EventArgs e) { rtxContent.Undo(); } //选择全部 private void FileMenuAll_Click(object sender, EventArgs e) { rtxContent.SelectAll(); } //显示时间 private void FileMenuTime_Click(object sender, EventArgs e) { rtxContent.AppendText(DateTime.Now.ToString()); }//设置字体 private void FileMenuFont_Click(object sender, EventArgs e) { if (fontDialog1.ShowDialog() == DialogResult.OK) { rtxContent.Font = fontDialog1.Font; } } //设置颜色 private void FileMenuColor_Click(object sender, EventArgs e) { if ( colorDialog1.ShowDialog() == DialogResult.OK) { rtxContent.ForeColor = colorDialog1.Color; } }//页面设置 private void FileMenuPage_Click(object sender, EventArgs e) { this.pageSetupDialog1.Document = this.printDocument1; pageSetupDialog1.ShowDialog(); } //打印 private void FileMenuDY_Click(object sender, EventArgs e) { if (rtxContent.Text.Length < 1) { MessageBox.Show("请确保要打印的文件的内容不为空！", "温馨提示"); return; } else { // 设置Document的属性 this.printDialog1.Document = this.printDocument1; this.printDialog1.PrinterSettings = this.pageSetupDialog1.PrinterSettings; if (this.printDialog1.ShowDialog() == DialogResult.OK) { try { this.printDocument1.Print(); } catch (Exception ex) { MessageBox.Show(ex.Message, "错误信息", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } } //设置换行 private void FileMenuBr_Click_1(object sender, EventArgs e) { if (FileMenuBr.Checked) { rtxContent.WordWrap = true; } else { rtxContent.WordWrap = false; } } //状态栏是否选择 private void FileMenuState_Click(object sender, EventArgs e) { statusStrip1.Visible = FileMenuState.Checked; }//多窗体水平显示 private void FileMenuH_Click(object sender, EventArgs e) { LayoutMdi(MdiLayout.TileHorizontal); } //多窗体垂直显示 private void FileMenuV_Click(object sender, EventArgs e) { LayoutMdi(MdiLayout.TileVertical); } //多窗体层叠显示 private void FileMenuC_Click(object sender, EventArgs e) { LayoutMdi(MdiLayout.Cascade); }//帮助 private void FileMenuHelp_Click(object sender, EventArgs e) { Form2 f2=new Form2(); f2.Show(); }//根据文本变化而状态变化 private void rtxContent_TextChanged(object sender, EventArgs e) { this.total.Text = "当前计数" + this.rtxContent.Text.Length.ToString(); } }

运行结果：

1，打开文件



2，设置字体大小-》查看帮助-》保存成功（查看帮助是另外打开的）



4，状态栏变化