1         //关闭窗体
 2         #region 关闭窗体
 3         private void Form1_FormClosing(object sender, FormClosingEventArgs e)
 4         {
 5             string msg = "有内容，但未保存，是否保存";
 6
 7             if (save == false)
 8             {
 9                 if (richTextBox1.Text != "")
10                 {
11                     if (flag == true)
12                     {
13                         //1.----------------------------------------------->
14                         switch (MessageBox.Show(msg, "警告", MessageBoxButtons.YesNoCancel))
15                         {
16                             case DialogResult.Yes: //选择“是”
17                                 if (SaveFile())
18                                 {
19                                     Application.ExitThread();
20                                 }
21                                 break;
22                             case DialogResult.No:
23                                 e.Cancel = false;
24                                 break;
25                             case DialogResult.Cancel:
26                                 e.Cancel = true;
27                                 break;
28                         }
29
30                         //1.------------------------------------------------->
31                     }
32
33                 }
34             }
35             if (save == true)
36             {
37                 if (richTextBox1.Text != "")
38                 {
39                     if (flag == true)
40                     {
41                         msg = "将更改保存到" + filePath;
42                         //2.----------------------------------------------->
43                         switch (MessageBox.Show(msg, "警告", MessageBoxButtons.YesNoCancel))
44                         {
45                             case DialogResult.Yes: //选择“是”
46                                 if (SaveFile())
47                                 {
48                                     Application.ExitThread();
49                                 }
50                                 break;
51                             case DialogResult.No:
52                                 e.Cancel = false;
53                                 break;
54                             case DialogResult.Cancel:
55                                 e.Cancel = true;
56                                 break;
57                         }
58
59                         //2.------------------------------------------------->
60                     }
61
62                 }
63             }
64         }
65         #endregion

 1        #region 查找按钮
 2
 3         private void Search_Click(object sender, EventArgs e)
 4         {
 5             if (FindMyText(tb_txt.Text.Trim(), indexToText) == -1)
 6             {
 7                 MessageBox.Show("已经完成搜索文档。", "提示");
 8
 9                 indexToText = 0;
10             }
11         }
12
13         public int FindMyText(string text, int start)
14         {
15             //初始化默认的返回值为false。
16             int returnValue = -1;
17
18             // 确保已经指定一个搜索字符串和一个有效的起始点.
19             if (text.Length > 0 && start >= 0)
20             {
21                 if (start != richTextBox1.Text.Length)
22                 {
23                     // 获得搜索字符串的位置在richTextBox1.
24                     indexToText = richTextBox1.Find(text, start, RichTextBoxFinds.MatchCase);
25
26                     // 确定文本被发现在richTextBox1.
27                     if (indexToText >= 0)
28                     {
29                         returnValue = indexToText;
30                         indexToText += 1;
31                     }
32                 }
33             }
34             return returnValue;
35         }
36
37         #endregion