public partial class Form1 : Form { string strConn = "server=.\\SQLEXPRESS;database=example;uid=sa;pwd=12345"; SqlConnection Conn; SqlDataAdapter dataAdapter; DataSet dataSet; public Form1() { InitializeComponent(); } private void SqlCommandInit() { string strSelectSQL = "SELECT * FROM tblEx01"; dataAdapter.SelectCommand = new SqlCommand(strSelectSQL, Conn); string strInsertCommand = "INSERT INTO tblEx01 (name, age) VALUES (@name, @age)"; dataAdapter.InsertCommand = ne...