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 ×îÐÂÎÄÕ : access

asp.netc#AccessͨÓÃÊý¾Ý·ÃÎÊÀà

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>
/// DataAccess µÄժҪ˵Ã÷
/// </summary>
public class DataAccess
{
    protected static OleDbConnection conn = new OleDbConnection();
    protected static OleDbCommand comm = new OleDbCommand();
    public DataAccess()
    {
          //init
    }
    private static void openConnection()
    {
        if (conn.State == ConnectionState.Closed)
        {
            conn.ConnectionString = @"Provider=Microsoft.J ......

asp.netc#AccessͨÓÃÊý¾Ý·ÃÎÊÀà

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>
/// DataAccess µÄժҪ˵Ã÷
/// </summary>
public class DataAccess
{
    protected static OleDbConnection conn = new OleDbConnection();
    protected static OleDbCommand comm = new OleDbCommand();
    public DataAccess()
    {
          //init
    }
    private static void openConnection()
    {
        if (conn.State == ConnectionState.Closed)
        {
            conn.ConnectionString = @"Provider=Microsoft.J ......

asp.netc#AccessͨÓÃÊý¾Ý·ÃÎÊÀà

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>
/// DataAccess µÄժҪ˵Ã÷
/// </summary>
public class DataAccess
{
    protected static OleDbConnection conn = new OleDbConnection();
    protected static OleDbCommand comm = new OleDbCommand();
    public DataAccess()
    {
          //init
    }
    private static void openConnection()
    {
        if (conn.State == ConnectionState.Closed)
        {
            conn.ConnectionString = @"Provider=Microsoft.J ......

vb.net²Ù×÷Êý¾Ý¿âÖ®ACCESS£¨3£©

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‘Êý¾Ý¿âÁ¬½Ó
DBConnection.ConnectionString = DB_CnStr()
DBConnection.Open()
'¿ªÊ¼²éѯ
Dim sql As New System.Text.StringBuilder
Dim DT As New DataTable
sql.Append(" SELECT * from WORDINFO")
Dim cmd As New OleDb.OleDbCommand(sql.ToStri ......

vb.net²Ù×÷Êý¾Ý¿âÖ®ACCESS£¨3£©

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DBConnection.ConnectionString = DB_CnStr()
DBConnection.Open()
'¿ªÊ¼²éѯ
Dim sql As New System.Text.StringBuilder
Dim DT As New DataTable
sql.Append(" SELECT * from WORDINFO")
Dim cmd As New OleDb.OleDbCommand(sql.ToStri ......

vb.net ×Ô¶¨ÒåÊý¾Ý¿âÁ´½ÓÀà(Access)

×Ô¶¨ÒåÊý¾Ý¿âÁ´½ÓÀà(Access)ÊÇÁ´½ÓAccessÊý¾Ý¿âʱʹÓõÄÀà¡£
²¹×㣺Application.StartupPath.ToStringÊÇÖ¸¶¨Éú³É.EXEÎļþµÄ·¾¶£¬°ÑÊý¾Ý¿âºÍÖ´ÐÐÎļþ´æ·Åµ½Ò»Æðʱ£¬²»¹Ü°²×°ºóÔÚʲô·¾¶¶¼ÎÞÐèÌض¨Ö¸¶¨¡£
Imports System.Data.OleDb
 
 #Region "È«¾Ö±äÁ¿"
 
     Private mTimeout As Integer
     Private mDbConn As OleDbConnection
     Private mSqlConn As OleDbCommand                 'SQLÖ´ÐÐ
     Private sTblNm As String                         '´æ·ÅÊý¾ÝµÄ±íÃû
     Private mbOpen As Boolean                        'DBÁ´½ÓÅжÏÓÃ
     Private mDbReader As ......

vb.net ×Ô¶¨ÒåÊý¾Ý¿âÁ´½ÓÀà(Access)

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²¹×㣺Application.StartupPath.ToStringÊÇÖ¸¶¨Éú³É.EXEÎļþµÄ·¾¶£¬°ÑÊý¾Ý¿âºÍÖ´ÐÐÎļþ´æ·Åµ½Ò»Æðʱ£¬²»¹Ü°²×°ºóÔÚʲô·¾¶¶¼ÎÞÐèÌض¨Ö¸¶¨¡£
Imports System.Data.OleDb
 
 #Region "È«¾Ö±äÁ¿"
 
     Private mTimeout As Integer
     Private mDbConn As OleDbConnection
     Private mSqlConn As OleDbCommand                 'SQLÖ´ÐÐ
     Private sTblNm As String                         '´æ·ÅÊý¾ÝµÄ±íÃû
     Private mbOpen As Boolean                        'DBÁ´½ÓÅжÏÓÃ
     Private mDbReader As ......

Access µÄ SQL µÄ¼Ç¼¼äµÄ¼Ó¼õ¼ÆËã

Access µÄ SQL ÖУ¬¼ÆËãÏàÓ¦±àºÅµÄ¼Ç¼֮¼ä ¼Ó ¼õ µÄ²éѯÃüÁî
ÀýÈç ¼ÆËãIDΪ 6 µÄ ºÏ¼Æ ¼õÈ¥ ID Ϊ 2¡¢3¡¢4 ÒÔ¼°¼ÓÉÏ ID Ϊ 5 µÄºÏ¼Æ
SELECT SUM(R) AS ½á¹û
from
(
  SELECT ºÏ¼Æ  AS R from T1 WHERE (ID = 6) UNION
  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 2) UNION
  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 3) UNION
  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 4) UNION
  SELECT ºÏ¼Æ  AS R from T1 WHERE (ID = 5)
) T ......

Access µÄ SQL µÄ¼Ç¼¼äµÄ¼Ó¼õ¼ÆËã

Access µÄ SQL ÖУ¬¼ÆËãÏàÓ¦±àºÅµÄ¼Ç¼֮¼ä ¼Ó ¼õ µÄ²éѯÃüÁî
ÀýÈç ¼ÆËãIDΪ 6 µÄ ºÏ¼Æ ¼õÈ¥ ID Ϊ 2¡¢3¡¢4 ÒÔ¼°¼ÓÉÏ ID Ϊ 5 µÄºÏ¼Æ
SELECT SUM(R) AS ½á¹û
from
(
  SELECT ºÏ¼Æ  AS R from T1 WHERE (ID = 6) UNION
  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 2) UNION
  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 3) UNION
  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 4) UNION
  SELECT ºÏ¼Æ  AS R from T1 WHERE (ID = 5)
) T ......

C# accessÈÕÆÚ²éѯ¼Ó#

C# accessÈÕÆÚ²éѯ¼Ó#
if (((string)((ComboBoxItem)cmbField.SelectedItem).Value).Equals("System.DateTime"))
{
                    //ÅжÏÈÕÆÚµÄ;
                
                    if (checkBox1.Checked == true)
                    {
                        value = "#" + cmbValue.SelectedItem.ToString().Trim() + "#";
                    }
} ......

C# accessÈÕÆÚ²éѯ¼Ó#

C# accessÈÕÆÚ²éѯ¼Ó#
if (((string)((ComboBoxItem)cmbField.SelectedItem).Value).Equals("System.DateTime"))
{
                    //ÅжÏÈÕÆÚµÄ;
                
                    if (checkBox1.Checked == true)
                    {
                        value = "#" + cmbValue.SelectedItem.ToString().Trim() + "#";
                    }
} ......

ʹÓÃJava Web¶ÔAccessÊý¾Ý¿âµÄ±¸×¢×ֶβÙ×÷ÎÊÌâ

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        JavaµÄStringÀàÐÍÍüÁ˾¿¾¹ÄÜ´æ·Å¶àÉÙ¸ö×Ö·ûÁË£¨10µÄ16´Î·½£¿£©£¬×ÜÖ®Ò²²»ÊÇStringÀàÐ͵ĴíÎó¡£Òò´Ë£¬¾Í½«ÎÊÌⶨλÔÚÁË´¦ÀíÊý¾Ý¿â´æ·ÅµÄsetter()ºÍgetter()·½·¨ÉÏÁË¡£¾­²é£¬setString()·½·¨ÄÜ´æµÄֵȡ¾öÓڸòÎÊýÏà¶ÔÓÚÇý¶¯³ÌÐòÔÚ VARCHAR
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        JavaµÄStringÀàÐÍÍüÁ˾¿¾¹ÄÜ´æ·Å¶àÉÙ¸ö×Ö·ûÁË£¨10µÄ16´Î·½£¿£©£¬×ÜÖ®Ò²²»ÊÇStringÀàÐ͵ĴíÎó¡£Òò´Ë£¬¾Í½«ÎÊÌⶨλÔÚÁË´¦ÀíÊý¾Ý¿â´æ·ÅµÄsetter()ºÍgetter()·½·¨ÉÏÁË¡£¾­²é£¬setString()·½·¨ÄÜ´æµÄֵȡ¾öÓڸòÎÊýÏà¶ÔÓÚÇý¶¯³ÌÐòÔÚ VARCHAR
ÖµÉϵÄÏÞÖƵĴóС¡£GoogleÁËһϣ¬ÍøÉÏÌṩÁ˸÷ÖÖ·½·¨£¬ÊÔÁËÊÔclobµÄ·½Ê½£¬·¢ÏÖAccessËƺõ²»Ö ......
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