wanglei_smartfish的专栏

本人最近做c#winform的项目，遇到了判断网络是否正常连接的问题。后来查出了以下几种方法，供大家学习参考。1.方法一using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using Syste

SQl数据脚本 use test go create table Categories ( CategoryID int primary key identity(1,1), CategoryName varchar(50), Picture image ) go 后台代码：  SqlDataAdapter sda = null;         DataTable d

$(function () {          $("#demo_2").citySelect({              provId: "prov_2",              cityId: "city_2",              distId: "dist_2",              prov: "北京",              nodata: "n

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using Sy