从 Oracle 数据库表中填充 DataTable - C#

Question

我已经成功建立了连接字符串，并且能够在数据库为 Access as 时填充表数据：

DataTable results = new DataTable();
using (OleDbConnection thisConnection = new OleDbConnection(connectionname))
            {
                OleDbCommand cmd = new OleDbCommand("SELECT * from TABLE_A", thisConnection);  //EDIT : change table name for Oracle
                thisConnection.Open();
                OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);
                adapter.Fill(results);
            }

虽然我是 Oracle 的新手。有人可以提一下对 Oracle 数据库的上述代码进行哪些更改吗？

Answer 1

你可以试试这个；

OracleConnection conn = new OracleConnection("Your Connection string");

//Open the connection to the database
conn.Open();

DataSet dataSet = new DataSet();

OracleCommand cmd = new OracleCommand("your select query");

cmd.CommandType = CommandType.Text;

cmd.Connection = conn;

using (OracleDataAdapter dataAdapter = new OracleDataAdapter())
{
  dataAdapter.SelectCommand = cmd;
  dataAdapter.Fill(dataSet);
}