(4)运行，结果如下：
和我的数据库中的数据一样
visual studio 2013连接Oracle 11g并获取数据：(二：实现)
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visual studio 2013连接Oracle 11g并获取数据：(二：实现)
void button1_Click(object sender, EventArgs e)
{
string connectionString;
string queryString;
connectionString = "Data Source=ORCL;User ID=scott;PassWord=tiger";
queryString = "SELECT * FROM TEST";
OracleConnection myConnection = new OracleConnection(connectionString);
OracleCommand myCommand = myConnection.CreateCommand();
myCommand.CommandText = queryString;
myConnection.Open();
OracleDataAdapter oraDA = new OracleDataAdapter(myCommand);
DataSet ds = new DataSet();
oraDA.Fill(ds);
myConnection.Close();
DataTable dtbl=ds.Tables[0];
this.dataGridView1.DataSource = dtbl;
}