C# 记事本功能实现
一、文件
1.打开
private void fOpen_Click(object sender, EventArgs e) { if (openFileDialog1.ShowDialog() == DialogResult.OK) { richTextBox1.LoadFile(openFileDialog1.FileName, RichTextBoxStreamType.PlainText); } path = openFileDialog1.FileName; //该path保存打开文件的路径，方便后续操作 }
2.保存/另存为
另存为：调出saveFileDialog1来进行该操作。
保存：若保存路径不为空（比如在目录下打开该文件path = openFileDialog1.FileName;），则默认保存在该路径下；若路径为空（新建文件），则执行另存为操作。
private void mOpen_Click(object sender, EventArgs e) { if (path != null) { richTextBox1.SaveFile(path, RichTextBoxStreamType.PlainText); MessageBox.Show("已保存"); } else { if (saveFileDialog1.ShowDialog() == DialogResult.OK) { richTextBox1.SaveFile(saveFileDialog1.FileName, RichTextBoxStreamType.PlainText); } MessageBox.Show("已保存"); path=saveFileDialog1.FileName; } }
3.页面设置
private void Pagesetting_Click(object sender, EventArgs e) { pageSetupDialog1.Document = printDocument1; try { pageSetupDialog1.ShowDialog(); } catch (Exception ex) { MessageBox.Show(ex.Message, "打印出错"); } }
4.打印
private void fPrint_Click(object sender, EventArgs e) { if (printDialog1.ShowDialog() == DialogResult.OK) { try { printDocument1.Print(); } catch (Exception ex) { MessageBox.Show(ex.Message); } } }
二、编辑
1.richTextBox功能调用
richTextBox1.Copy();
richTextBox1.Cut();
richTextBox1.Paste();
richTextBox1.SetAll();
richTextBox1.Undo();
2.查找、查找下一个、替换、转到
三、格式
1.字体
private void Font_Click(object sender, EventArgs e) { FontDialog fontDialog = new FontDialog(); fontDialog.Color = richTextBox1.ForeColor; fontDialog.AllowScriptChange = true; fontDialog.ShowColor = true; if (fontDialog.ShowDialog() != DialogResult.Cancel) { richTextBox1.SelectionFont = fontDialog.Font; richTextBox1.SelectionColor = fontDialog.Color; } }
2.combobox改变字体大小
private void toolStripComboBox1_TextChanged(object sender, EventArgs e) { richTextBox1.SelectionFont = new Font(toolStripComboBox1.Text, Convert.ToSingle(toolStripComboBox1.Text)); }
3.对齐格式
richTextBox1.SelectionAlignment = HorizontalAlignment.Left; richTextBox1.SelectionAlignment = HorizontalAlignment.Right; richTextBox1.SelectionAlignment = HorizontalAlignment.Center;
四、工具
1.字数统计
private void richTextBox1_TextChanged(object sender, EventArgs e) { char[] ch=richTextBox1.Text.Substring(0,richTextBox1.TextLength).ToCharArray(); if (richTextBox1.Text != "") { for (int i = 0; i < richTextBox1.TextLength; i++) { if (ch[i] >= 0 && ch[i] <= 127) { if (ch[i] >= 'a' && ch[i] <= 'z' || ch[i] >= 'A' && ch[i] <= 'Z') { letters.Text = "字母：" + (++letter_sum); } else if (ch[i] == ' ') space.Text = "空格：" + (++space_sum); } else if (ch[i] >= 0x4e00 && ch[i] <= 0x9fbb) chinese.Text = "汉字：" + (++chinese_sum); } letter_sum = 0; space_sum = 0; chinese_sum = 0; total.Text = "总字符：" + richTextBox1.Text.Length.ToString(); lines_sum = richTextBox1.GetLineFromCharIndex(richTextBox1.Text.Length) + 1; lines.Text = "行数：" + (lines_sum); } else { letters.Text = "0"; space.Text = "0"; chinese.Text = "0"; total.Text = "0"; } }