public UserMannegement() { InitializeComponent(); DatabaseConnection dbConn = new DatabaseConnection(); //데이터베이스 연결 객체 생성 ImplementSql impSql = new ImplementSql(); //sql실행 객체 생성 DataSet ds; dbConn.GetConnection("server=localhost;database=test;uid=root;pwd=jang7856;"); string sql = "select *from UserInfo"; MySqlDataAdapter da = new MySqlDataAdapter(sql, DatabaseConnection.conn); ds = new DataSet(); da.Fill(ds, "UserInfo"); dataGridView1.DataSource = ds; dataGridView1.DataMember = "UserInfo"; this.FormBorderStyle = FormBorderStyle.None; this.TopMost = true; this.Bounds = Screen.PrimaryScreen.Bounds; }