vb.net 自定义数据库链接类(Access)
自定义数据库链接类(Access)是链接Access数据库时使用的类。
补足：Application.StartupPath.ToString是指定生成.EXE文件的路径，把数据库和执行文件存放到一起时，不管安装后在什么路径都无需特定指定。
Imports System.Data.OleDb
#Region "全局变量"
Private mTimeout As Integer
Private mDbConn As OleDbConnection
Private mSqlConn As OleDbCommand 'SQL执行
Private sTblNm As String '存放数据的表名
Private mbOpen As Boolean 'DB链接判断用
Private mDbReader As OleDbDataReader
Private mDbTrans As OleDbTransaction
Private mbTran As Boolean = False 'Transaction开始判断用
Private sSqlStr As String 'SQL文
Private mDbResult As DB_RESULT 'EXECUTE方法的处理结果
Private mDbConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Application.StartupPath.ToString & _
&nbs
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java 用rmi编写客户/服务程序
出现access denied 问题
因为不知道怎么配置 策略文件 就将客户端的System.setSecurityManager(new RMISecurityManager())删了，运行java ProductClient
成功！
配置策略文件得之后才弄啦 ......
VB无所不能之五：建立“标准”DLL动态链接库文件（2）
——作者：钟声
博客地址：http://blog.csdn.net/useway
昨天我们讲到，如何通过特殊方法获取OBJ文件，那么今天我们继续讲如何进行编译连接。
......
using System;
using System.Data;
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 System.Data.OleDb;
/// <summary>
/// Data ......
Dim rs As ADODB.Recordset
Dim sqlstr As String
'查询
sqlstr = "select * from 表名 where 字段名 = '" & 查询的内容 & "'"
rs = VScn.Execute("" & SqlSt ......
Option Explicit
Private Declare Function CreatePipe Lib "kernel32" (phReadPipe As Long, phWritePipe As Long, lpPipeAttributes As SECURITY_ATTRIBUTES, ByVal nSize As Long) As Long
Private Declare Function WriteFile Lib "kernel32" ......
