手机号码归属地查询练习

namespace 手机号码归属地查询
{
public partial class Form1 : Form
    {
public Form1()
        {
            InitializeComponent();
        }

private void button1_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog dlg = new FolderBrowserDialog();
if (dlg.ShowDialog() != DialogResult.OK)
            {
return;
            }
string path = dlg.SelectedPath;

            String connStr = ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = "delete from T_Numbers";
                    cmd.ExecuteNonQuery();
                }
            }


string[] files = Directory.GetFiles(path, "*.txt", SearchOption.AllDirectories);

using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = "Insert into T_Numbers(StartNo,EndNo,Name) values(@StartNo,@EndNo,@Name)";

foreach (string file in files)//遍历文件名
                    {
string 运营商名称 = Path.GetFileNameWithoutExtension(file);
string[] lines = File.ReadAllLines(file, Encoding.Default);//不用StreamReader,因为文件很小，
//一次性加载，也不占多少内存,ReadAllLines默认编码是UTF-8

foreach (string line in lines)
                        {


string[] strs = line.Split(\'-\');
string 开始号码 = strs[0];
string 结束号码 = strs[1];
string 市 = strs[2];

                            cmd.Parameters.Clear();
                            cmd.Parameters.Add(new SqlParameter("StartNo", 开始号码));
                            cmd.Parameters.Add(new SqlParameter("EndNo", 结束号码));
                            cmd.Parameters.Add(new SqlParameter("Name", 运营商名称 + 市));
                            cmd.ExecuteNonQuery();
//MessageBox.Show(line);
                        }
                    }
                }
            }

            MessageBox.Show("导入成功！");
        }

private void btnSearch_Click(object sender, EventArgs e)
        {
            String connStr = ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = "select * from T_numbers where StartNo<=@No and EndNo>=@No";
                    cmd.Parameters.Add(new SqlParameter("No", textBox1.Text));
using (SqlDataReader reader = cmd.ExecuteReader())
                    {
if (reader.Read())
                        {
string name = reader.GetString(reader.GetOrdinal("Name"));
                            MessageBox.Show("手机归属地：" + name);
                        }
else
                        {
                            MessageBox.Show("找不到运营商信息");
                        }
                    }
                }
            }

        }

     }
}