问题：
利用 Visual Studio 进行 C# 编程访问数据库的三个核心语句是 ( )、( )、( )
答案：
oleDbDataAdapter1.SelectCommand.CommandText = strSql;;oleDbDataAdapter1.SelectCommand.CommandText;oleDbDataAdapter1.SelectCommand.CommandText = ;","oleDbDataAdapter1.Fill(dataSet11, \"x\");;oleDbDataAdapter1.Fill( );oleDbDataAdapter1.Fill;Fill","dataGridView1.DataSource = dataSet11.Tables[\"x\"];;dataGridView1.DataSource = dataSet11.Tables[ ];dataGridView1.DataSource = dataSet11.Tables[\"s\"];;dataGridView1.DataSource = dataSet11.Tables