WinForm 小程序 NotePad

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Threading.Tasks;
 9 using System.Windows.Forms;
10 
11 namespace FreeNotes
12 {
13     public partial class NotePad : Form
14     {
15         public NotePad()
16         {
17             InitializeComponent();
18         }
19 
20         /// <summary>
21         /// 打开文件事件
22         /// </summary>
23         private void btn_Open_Click(object sender, EventArgs e)
24         {
25             OpenFileDialog of = new OpenFileDialog();
26 
27             of.DefaultExt = "*.rtf";
28 
29             of.Filter = "rtf文件(*.rtf)|*.rtf|所有文件(*.*)|*.*";
30 
31             if (of.ShowDialog() == DialogResult.OK && of.FileName.Length > 0)
32             {
33                 richTextBox1.LoadFile(of.FileName, RichTextBoxStreamType.RichText);
34             }
35         }
36 
37         /// <summary>
38         /// 保存文件事件
39         /// </summary>
40         private void btn_Save_Click(object sender, EventArgs e)
41         {
42             SaveFileDialog sa = new SaveFileDialog();
43 
44             sa.Title = "保存";
45 
46             sa.FileName = "*.rtf";
47 
48             sa.Filter = "rtf文件(*.rtf)|*.rtf|所有文件(*.*)|*.*";
49 
50             sa.DefaultExt = "*.rtf";
51 
52             if (sa.ShowDialog() == DialogResult.OK && sa.FileName.Length > 0)
53             {
54                 richTextBox1.SaveFile(sa.FileName, RichTextBoxStreamType.RichText);
55             }
56         }
57 
58         /// <summary>
59         /// 字体事件
60         /// </summary>
61         private void btn_Font_Click(object sender, EventArgs e)
62         {
63             FontDialog fda = new FontDialog();
64 
65             fda.ShowColor = true;
66 
67             if (fda.ShowDialog() != DialogResult.Cancel)
68             {
69                 richTextBox1.SelectionFont = fda.Font;
70                 richTextBox1.SelectionColor = fda.Color;
71             }
72         }
73 
74         /// <summary>
75         /// 清空文本事件
76         /// </summary>
77         private void btn_Clear_Click(object sender, EventArgs e)
78         {
79             richTextBox1.Clear();
80         }
81     }
82 }