public sTringAdd(){} public string SQLQ(string sText) { sText = "'"+sText+"'"; return sText; } public string SQLQ(int n) { return n.ToString(); } public string SQLQ(double n) { return n.ToString(); } public string SQLQC(string sText) { sText = "'"+sText+"',"; return sText; } public string SQLQC(int nText) { string sText = nText.ToString()+","; return sText; } public string SQLQC(double nText) { string sText = nText.ToString()+","; return sText; } } #endregion}
完全没有必要! 用System.Data.Oledb
Imports System.Data.OleDb .... Private Sub GetData() Dim cnn As New SqlConnection("data source=localhost;initial catalog=model;integrated security=sspi") Dim cmd As New SqlCommand("select * from sysusers", cnn) Dim adapter As New SqlDataAdapter(cmd) Dim dst As New DataSet Try adapter.Fill(dst) Dim dv As DataView = dst.Tables(0).DefaultView Response.Write(dv.Item(0).Item(1).ToString()) dgdScoreshow.DataSource = dst.Tables(0).DefaultView dgdScoreshow.DataBind() Catch ex As Exception Response.Write(ex.Message) End Try End Sub
Provide Jet 4.0 Microsost
具体怎么写的忘记了
可以用oledb
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source =aa.mdb";
____________________________
(2005年04月26日 14时17分44秒)
using System;
using System.Xml;
using System.Data.OleDb;
using System.Data;namespace ACS
{
/// <summary>
/// 對數據庫進行更新
/// </summary>
/// AIDU數據庫連接
/// Retrieval 返回查詢Dataset
/// Translation與數據庫進行交易[Access = true][fail = false]
///
public class AIDU
{
#region 連接失敗返回失敗消息--[Link Ok return null][Link fail return ErrorMessage]
public string ErrorMsg()
{
return sErrorMsg;
} #endregion #region 設置公共連接對像字串--[ sAcsCon ]
public string sAcsConString()
{
string sConString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source ="+@"KSZH.mdb";
// string sConString = "Provider=OraOLEDB.Oracle.1;Password=mes_ks1;Persist Security Info=True;User ID=mes_ks1;Data Source=linux;Extended Properties=";
return sConString;
}
public string sAcsCon
{
get{return sAcsConString();}
}
#endregion #region 設置公共連接對像--[ Link_cn ] public OleDbConnection Link_cn
{
get{return Acs_cn();}
} public OleDbConnection Acs_cn()
{
OleDbConnection cn = new OleDbConnection(sAcsCon);
if(cn.State == ConnectionState.Closed)
{
cn.Open();
}
return cn;
} #endregion //連接失敗後的返回消息
private string sErrorMsg ="" ;
//連接標志變量 [bFlag = true Connection Database Success]
//[bFlag = false Connection Database unSuccess]
private bool bFlag = false;
#region 數據庫連接--[ LINK-TEST ] public bool AIDU_Link()
{
OleDbConnection TestCn = new OleDbConnection(sAcsCon);
//測試數據庫連接
try
{
if(TestCn.State != ConnectionState.Open)
{
TestCn.Open();
bFlag = true;
}
}
catch(Exception e)
{
sErrorMsg = e.Message;
}
finally
{
if(TestCn.State == ConnectionState.Open)
{
TestCn.Close();
}
}
return bFlag;
} #endregion #region 資料查詢--[ SELECT ]
public DataSet Select(string sCmdString)
{
//建立CONNECTION對像
OleDbConnection cn1=new OleDbConnection(sAcsCon);
//建立DATASET對像,做資料返回值
DataSet oDs = new DataSet();
try
{//建立Adapter對像
OleDbDataAdapter myAdapter = new OleDbDataAdapter(sCmdString,cn1);
myAdapter.Fill(oDs);
}
catch
{
cn1.Close();
}
return oDs;
}
#endregion #region 數據資料更新--[ Update ] //執行--[ UPDATE ][ INSERT ][ DELETE ]
//[ The command Execute sccess return 1]
//[ The command Execute unSuccess return -1]
public int UpdateCmd(string CommandString)
{
int nResult = -1;
//進行一個本地交易
// OleDbTransaction myTran = Link_cn.BeginTransaction(IsolationLevel.ReadCommitted);
// myTran.Begin();
//oledbcommand 命令執行交易
OleDbCommand myCmd = new OleDbCommand(CommandString,Link_cn);
//和數據庫進這行數據交易
try
{
//提交數據
myCmd.ExecuteNonQuery();
// myTran.Commit();
nResult = 1;
}
catch(OleDbException oe)
{
//出錯數據回滾原來的狀態,保持數據庫一致性
// myTran.Rollback();
nResult = -1;
throw oe;
}
finally
{
//執行交易後關閉聯接
Link_cn.Close();
}
return nResult;
}
#endregion
}
#region 處理字符,以符合SQL語句用--[ class sTringAdd ]
public class sTringAdd
{
public sTringAdd(){} public string SQLQ(string sText)
{
sText = "'"+sText+"'";
return sText;
} public string SQLQ(int n)
{
return n.ToString();
} public string SQLQ(double n)
{
return n.ToString();
} public string SQLQC(string sText)
{
sText = "'"+sText+"',";
return sText;
} public string SQLQC(int nText)
{
string sText = nText.ToString()+",";
return sText;
} public string SQLQC(double nText)
{
string sText = nText.ToString()+",";
return sText;
}
}
#endregion}
用System.Data.Oledb
....
Private Sub GetData()
Dim cnn As New SqlConnection("data source=localhost;initial catalog=model;integrated security=sspi")
Dim cmd As New SqlCommand("select * from sysusers", cnn)
Dim adapter As New SqlDataAdapter(cmd)
Dim dst As New DataSet Try
adapter.Fill(dst)
Dim dv As DataView = dst.Tables(0).DefaultView
Response.Write(dv.Item(0).Item(1).ToString())
dgdScoreshow.DataSource = dst.Tables(0).DefaultView
dgdScoreshow.DataBind()
Catch ex As Exception
Response.Write(ex.Message)
End Try
End Sub