Oracle9i连接ASP.NET方法及注意点
#region 声明
//----------------------------------------------------------------------
//
// 修改: 李淼（Nick.Lee）
//
// oracle9i连接asp.net方法及注意点
// 时间:2005-3-18
// boyorgril@msn.com
// QQ:16503096
//注意：引用请标明修改出处,谢谢
//----------------------------------------------------------------------
#endregion
推荐方式
public void oledboracle_dataset()
{
string ConnectionString="Data Source=mine;user=sys;password=sys;";
//写连接串
OracleConnection conn=new OracleConnection(ConnectionString);
//创建一个新连接
OracleCommand cmd= new OracleCommand("select * from fjdl.t_rights",conn);
DataSet ds = new DataSet();
OracleDataAdapter oda=new OracleDataAdapter();
oda.SelectCommand=cmd;
oda.Fill(ds);
conn.Close();
DataGrid1.DataSource=ds.Tables[0].DefaultView;
DataGrid1.DataBind();
}
以下为用dataset和datareader,oledb和oralceclient的四种方法
public void oledboracle_datareader()
{
System.Data.OleDb.OleDbConnection oledb1=new System.Data.OleDb.OleDbConnection();
string sqlText="select * from scott.tAdmin";
System.Data.OleDb.OleDbDataReader
reader;
oledb1.ConnectionString="Provider=\"OraOLEDB.Oracle.1\";User ID=system;password=system;Data Source=rick;";
System.Data.OleDb.OleDbCommand Com=new System.Data.OleDb.OleDbCommand(sqlText,oledb1);
Com.Connection.Open();
reader=Com.ExecuteReader();
DataGrid1.DataSource=reader;
DataGrid1.DataBind();
//this.Response.Write(oleDbConnection1.ConnectionString);
reader.Close();
Com.Connection.Close();
}
public void oledboracle_dataset()
{
System.Data.OleDb.OleDbConnection oledb1=new System.Data.OleDb.OleDbConnection("Provider=\"OraOLEDB.Oracle.1\";User ID=system;password=system;Data Source=rick;");
string sqlText="select * from scott.tAdmin";
System.Data.DataSet set1=new DataSet();
System.Data.OleDb.OleDbDataAdapter Ada1=new System.Data.OleDb.OleDbDataAdapter (sqlText,oledb1);
Ada1.Fill(set1,"data1");
this.DataGrid2.DataSource=set1.Tables["data1"].DefaultView;
this.DataGrid2.DataBind();
}
public void oracle_dataset()
{
System.Data.OracleClient.OracleConnection
oracle1=new System.Data.OracleClient.OracleConnection("user id=system;data source=rick;password=system");
string sqlText="select * from scott.tAdmin";
System.Data.DataSet set1=new DataSet();
System.Data.OracleClient.OracleDataAdapter
Ada1=new System.Data.OracleClient.OracleDataAdapter(sqlText,oracle1);
Ada1.Fill(set1,"oracle_data1");
this.DataGrid3.DataSource=set1.Tables["oracle_data1"].DefaultView;
this.DataGrid3.DataBind();
}
public void oracle_datareader()
{
System.Data.OracleClient.OracleConnection oracle2=new System.Data.OracleClient.OracleConnection();
string sqlText="select * from scott.tAdmin";
System.Data.OracleClient.OracleDataReader reader;
oracle2.ConnectionString="User ID=system;user id=system;data source=rick;password=system";
System.Data.OracleClient.OracleCommand Com=new System.Data.OracleClient.OracleCommand(sqlText,oracle2);
Com.Connection.Open();
reader=Com.ExecuteReader();
DataGrid4.DataSource=reader;
DataGrid4.DataBind();
//this.Response.Write(oleDbConnection1.ConnectionString);
reader.Close();
Com.Connection.Close();
}
注意点:
如果不设置远程数据的本级网络配置
ORA-00162: external dbid length 18 is greater than maximum (16)
连接名称不能超过16个字符
修改方法
Configuration and Migration Tools-Net Configuration Assistant中配置