SQL delete command?

Question

I am having trouble with a simple DELETE statement in SQL with unexpected results , it seems to add the word to the list??. Must be something silly!. but i cannot see it , t

Answer 1

See the code below:

private void button4_Click(object sender, EventArgs e)
        {
            String st = "DELETE FROM supplier WHERE supplier_id =" + textBox1.Text;

        SqlCommand sqlcom = new SqlCommand(st, myConnection);
        try
        {
            sqlcom.ExecuteNonQuery();
            MessageBox.Show("delete successful");
        }
        catch (SqlException ex)
        {
            MessageBox.Show(ex.Message);
        }
    }


    private void button6_Click(object sender, EventArgs e)
    {
        String st = "SELECT * FROM supplier";

        SqlCommand sqlcom = new SqlCommand(st, myConnection);
        try
        {
            sqlcom.ExecuteNonQuery();
            SqlDataReader reader = sqlcom.ExecuteReader();
            DataTable datatable = new DataTable();
            datatable.Load(reader);
            dataGridView1.DataSource = datatable;
        }
        catch (SqlException ex)
        {
            MessageBox.Show(ex.Message);
        }
    }