C#------手机号归属地查询（查询数据）

using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace shoujihao
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Imports_Click(object sender, EventArgs e)
{
//文件打开对话框
OpenFileDialog dlg = new OpenFileDialog();

//如果用户没选择文件，就返回
if (dlg.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return;
}

//获得用户选择的文件
string fileName = dlg.FileName;

//读取所选择的文件
using(Stream fs = new FileStream(fileName,FileMode.Open))
using (StreamReader reader = new StreamReader(fs, Encoding.Default))
{
//开始读取这个文件
string line;
//跳过第一行
line = reader.ReadLine();

//创建数据库链接
using (MySqlConnection conn = MySqlHelper.CreateConnection())
//事务回滚
using(MySqlTransaction tx = conn.BeginTransaction())
{
try
{
while ((line = reader.ReadLine()) != null)
{
//如果最后一行为空字符串，则跳出整个循环
if (string.IsNullOrEmpty(line))
{
break;
}

//把line字符串按照，号进行分割
string[] lines = line.Split(',');
//去掉字符串中的“”号
string MobileNumber = lines[1].Trim('"');
string MobileArea = lines[2].Trim('"');
string MobileType = lines[3].Trim('"');

//插入数据库
//MySqlHelper.ExecuteNonQuery(conn, "insert into t_mobile(MobileNumber,MobileArea,MobileType) values(@MobileNumber,@MobileArea,@MobileType))",
//   new MySqlParameter { ParameterName = "@MobileNumber", Value = MobileNumber },
//   new MySqlParameter { ParameterName = ",@MobileArea", Value = MobileArea },
//   new MySqlParameter { ParameterName = "@MobileType", Value = MobileType });
MySqlHelper.ExecuteNonQuery(conn, "INSERT INTO t_mobile(MobileNumber,MobileArea,MobileType) VALUES(@MobileNumber,@MobileArea,@MobileType)",
new MySqlParameter { ParameterName = "@MobileNumber", Value = MobileNumber },
new MySqlParameter { ParameterName = "@MobileArea", Value = MobileArea },
new MySqlParameter { ParameterName = "@MobileType", Value = MobileType });
}
tx.Commit();
}
catch(Exception ex)
{
tx.Rollback();
MessageBox.Show("导入失败" + ex.Message);
}
}
}
MessageBox.Show("导入成功!");
}

private void cx_Click(object sender, EventArgs e)
{
//获得用户输入的手机号码
string phoneNum = textPhoneNum.Text;
//取用户手机号前七位
string phoneFix = phoneNum.Substring(0, 7);
//去数据库查询信息
DataTable table =  MySqlHelper.ExecuteQuery("SELECT MobileNumber,MobileArea FROM t_mobile WHERE MobileNumber = @phoneFix",
new MySqlParameter { ParameterName = "@phoneFix", Value = phoneFix });
//
if (table.Rows.Count <= 0)
{
MessageBox.Show("木有查询到数据");
}
else
{
DataRow row = table.Rows[0];
string MobileArea = (string)row[1];
string MobileType = (string)row[2];
MessageBox.Show(MobileArea+MobileType);
}
}
}
}