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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SQLite;
using System.Text.RegularExpressions;
using System.IO;

namespace 手机号码查询
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        string phoneNum = "";//存储完整手机号码
        string tel = "";//存储手机号码的前缀

        private void tsbtnLocal_Click(object sender, EventArgs e)
        {
            if (!File.Exists("data"))//检查数据库是否存在
            {
                MessageBox.Show("数据库文件丢失！请找回！", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            phoneNum = tstxtTel.Text.Trim();//完整手机号码
            tel = phoneNum.Substring(0, 3);//取手机号码前面三位判断
            if (checkTel())
            {
                phoneNum = phoneNum.Substring(0, 7);//取手机号码前面七位进行查询
                string sql = "select * from '"   tel   "' where numberrange='"   phoneNum   "' limit 0,1";
                SQLiteConnection con = null;
                SQLiteCommand cmd = null;
                SQLiteDataReader dr = null;
                try
                {
                    con = new SQLiteConnection("Data Source=" Application .StartupPath  "\\data");
                    cmd = new SQLiteCommand(sql, con);
                    con.Open();
                    dr = cmd.ExecuteReader();
                    if (dr.HasRows)//如果存在此记录
                    {
                        txtLocaltion.Text = dr.GetValue(1).ToString();
                        txtType.Text = dr.GetValue(2).ToString();
                        txtZipCode.Text = dr.GetValue(3).ToString();
                        txtCityNum.Text = dr.GetValue(4).ToString();
                    }
                    else
                    {
                        MessageBox.Show("暂时未查找到此号码的记录！", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }
                                     
                }
                catch (Exception ex)
                {
                    MessageBox.Show("暂时未查找到此号码的记录！" ex.Message , "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                finally
                {
                    dr.Close();
                    dr.Dispose();
                    con.Close();
                    con.Dispose();
                    tstxtTel.Focus();
                }
            }
        }
        //检验输入手机号码的合法性和正确性
        private bool checkTel()
        {           
            if (phoneNum == null)//如果号码为空
            {
                MessageBox.Show("号码不能为空！", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information );
                tstxtTel.Focus();
                return false;
            }
            Match num = Regex.Match(phoneNum , "[0-9] ");
            if (!num.Success)//如果号码不为数字
            {
                MessageBox.Show("手机号码输入错误！", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                tstxtTel.Focus();
                return false;
            }
            if (phoneNum.Length < 7)//如果号码长度小于七位
            {
                MessageBox.Show("手机号码必须要大于7位！", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                tstxtTel.Focus();
                return false;
            }
            if (phoneNum.Length > 11)//如果号码长度大于十一位
            {
                MessageBox.Show("手机号码必须要小于11位！", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                tstxtTel.Focus();
                return false;
            }            
            if (tel != "130" && tel != "131" && tel != "132" && tel != "133" && tel != "134" &&
                tel != "135" && tel != "136" && tel != "137" && tel != "138" && tel != "139" &&
                tel != "150" && tel != "151" && tel != "152" && tel != "153" && tel != "156" &&
                tel != "158" && tel != "159")//如果不是手机号码
            {
                MessageBox.Show("手机号码输入错误", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return false;
            }
            return true;
        }

        private void tstxtTel_KeyPress(object sender, KeyPressEventArgs e)
        {
            // 特殊键, 不处理
            if ((int)e.KeyChar <= 31)
            {
                return;
            }

            // 非数字键, 放弃该输入
            if (!char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
                return;
            }
        }

        private void tsbtnInternet_Click(object sender, EventArgs e)
        {
            phoneNum = tstxtTel.Text.Trim();
            string url = @"http://api.showji.com/Locating/query.aspx?m="   phoneNum ;
            wbMain.Navigate(url);
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            MessageBox.Show("作者：刘典武 （游龙工作室）"   "\r\n"   "网址：http://www.liudianwu1988.51.com", "呵呵", MessageBoxButtons.OK, MessageBoxIcon.Information);
            Application.ExitThread();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //tstxtTel.Focus();//这样初始化焦点不行
        }

        private void Form1_Shown(object sender, EventArgs e)
        {
            tstxtTel.Focus();//这样才正确
        }
    }
}