private void button3_Click(object sender, EventArgs e) { string id = txtRoomId.Text; RoomController roomController = new RoomController(); bool i = roomController.DeleteRoom(id); if (i == true) { MessageBox.Show("Selected Room Deleted Successfully"); txtRoomId.Text = ""; txtRoomNumber.Text = ""; txtNumberOfBeds.Text = ""; txtDescription.Text = ""; txtStatus.Text = ""; txtBlock.Text = ""; txtFee.Text = ""; txtSearch.Text = ""; } else { MessageBox.Show("Selected Room is not Deleted!"); } }