C#窗体实现数据录入与模糊搜索小案例

记录一下

主要代码

  private void button1_Click(object sender, EventArgs e)
        {
            string name = textBox1.Text;
            string hometown = textBox4.Text;
            string school = textBox6.Text;
            string sex = textBox5.Text;
            string lat = textBox3.Text;
            string log = textBox2.Text;
            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                string[] lines = File.ReadAllLines(saveFileDialog1.FileName, Encoding.UTF8); // 如果你需要逐行搜索
                string str=String.Join("\n",lines);
                str += "\n" + name + "," + sex + "," + hometown + "," + school + "," + lat + "," + log + "\n";
                StreamWriter sw = new StreamWriter(saveFileDialog1.FileName);
                sw.Write(str);
                sw.Close();
                
                MessageBox.Show("保存成功！！！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            string str=textBox7.Text;
            string searchTerm = str; // 正则表达式示例，这里仅匹配独立的“关键字”
            Regex regex = new Regex(searchTerm, RegexOptions.IgnoreCase);
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
     
                string[] lines = File.ReadAllLines(openFileDialog1.FileName, Encoding.UTF8); // 如果你需要逐行搜索
                foreach (var line in lines)
                {
                    Match match = regex.Match(line);
                    if (match.Success)
                    {
                        richTextBox1.Text = line+"\n";
                        MessageBox.Show("找到啦", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }
                }
            }
        }

实现思路：
1.数据录入
取textbox数据，打开存储文件，读取数据，添加一行数据，再重新存储数据
2.模糊搜索
正则表达式简单使用，读取数据，使用正则表达式匹配，打印数据

另一种模糊搜索思路：读取数据，建立倒排序索引，建立一个字典，键为单词，值为行索引