连接Oracle数据库的方法

ODBC

New version:
"Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=Username;Pwd=asdasd;"

Old version:
"Driver={Microsoft ODBC Driver for Oracle};ConnectString=OracleServer.world;Uid=myUsername;Pwd=myPassword;"

OLEDB, OleDbConnection (.NET)

Standard security:
"Provider=msdaora;Data Source=MyOracleDB;User Id=UserName;Password=asdasd;"
This one's from Microsoft, the following are from Oracle
Standard Security:
"Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=Username;Password=asdasd;"

Trusted Connection:
"Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;OSAuthent=1;"

OracleConnection (.NET)

Standard:
"Data Source=Oracle8i;Integrated Security=yes";
This one works only with Oracle 8i release 3 or later
Declare the OracleConnection:

C#:
using System.Data.OracleClient;
OracleConnection oOracleConn = new OracleConnection();
oOracleConn.ConnectionString = "my connectionstring";
oOracleConn.Open();

VB.NET:
Imports System.Data.OracleClient
Dim oOracleConn As OracleConnection = New OracleConnection()
oOracleConn.ConnectionString = "my connectionstring"
oOracleConn.Open()

Data Shape

MS Data Shape:
"Provider=MSDataShape.1;Persist Security Info=False;Data Provider=MSDAORA;Data Source=orac;user id=username;password=mypw"

例子1：namespace oracle
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataGrid DataGrid1;
private DataSet myDataSet = new DataSet();
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面

string connstring="Provider=OraOLEDB.Oracle;Data Source=jtest;User Id=system;Password=manager;";
OleDbConnection conn=new OleDbConnection(connstring);
string strcom = "select * from system.LG_TASK_TABLE";
conn.Open();
OleDbDataAdapter mycommand = new OleDbDataAdapter(strcom,conn);
mycommand.Fill(myDataSet,"system.LG_TASK_TABLE");
DataGrid1.DataSource = myDataSet.Tables["system.LG_TASK_TABLE"].DefaultView;
DataGrid1.DataBind();
conn.Close();

}