V587

摘要： MySQLConnectionconn=null; try{ //MySQLConnectionconn=newMySQLConnection(newMySQLConnectionString("myquest","root","amttgroup").AsString); //实例化一个连接对象其中myquest为数据库名，root为数据库用户名，amttgroup为数据库密码 stringconnstr="DataSource=MySQL;Password=root;UserID=root;Location=localh 阅读全文

摘要： using System;using System.Data;using System.Data.SqlClient;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using MySQLDriverCS;public partial class _Def 阅读全文

摘要： MySqlConnection connection = new MySqlConnectio(connectionString); using (MySqlCommand cmd = new MySqlCommand(safeSql, connection)) { try { connection.Open(); return cmd.ExecuteNonQuery(); } catch (Exception ex) { connection.Close(); return 0; } } 阅读全文

摘要： 1、用MySQLDriverCS连接MySQL数据库先下载和安装MySQLDriverCS，地址：http://sourceforge.net/projects/mysqldrivercs/在安装文件夹下面找到MySQLDriver.dll，然后将MySQLDriver.dll添加引用到项目中注：我下载的是版本是 MySQLDriverCS-n-EasyQueryTools-4.0.1-DotNet2.0.exeusing System;using System.Collections.Generic;using System.ComponentModel;using System.Data; 阅读全文

摘要： XMLFile1.xml文件如下：view sourceprint?01<?xml version="1.0" encoding="utf-8" ?> 02<root name="rootNode" text="根节点"> 03<node name="node1" text="节点1"> 04<childNode name="childNode1" text="子节点1"> 05<g 阅读全文

摘要： foreach (TreeNode CNode in LastTree.Nodes) {abc(CNode); } void abc(TreeNode node){ MessageBox.Show(node.Text);foreach(TreeNode child in node.ChildNodes){abc(child);// 递归}} 阅读全文

摘要： 用两个递归来设置子节点和父节点的状态，如下private void CheckChild(TreeNode node) { if (node.Nodes.Count != 0) { foreach (TreeNode item in node.Nodes) { item.Checked = node.Checked; CheckChild(item); } } } private void CheckParent(TreeNode node) { if (node.Parent != null) { int count = 0; foreach (TreeNode item in node.P 阅读全文