Question

Same as the title and using C#.
Anyone know how to do this? I have a bunch of data read into a list box but the data doesn’t refresh unless I restart the windows form. anyone know how to refresh it on a button click event?

   {

                SqlConnection conn = new SqlConnection();
                conn.ConnectionString = (@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\John\Desktop\DB\DB\DB\setup.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
                conn.Open();

                SqlCommand cmd = new SqlCommand
                ("SELECT PEOPLE " + "FROM Workers", conn);

                try
                {
                    SqlDataReader sdr = cmd.ExecuteReader();

                    while (sdr.Read())
                    {
                        listBox1.Items.Add(sdr["people"].ToString());
                    }

                    sdr.Close();
                }

                catch (SqlException ex)
                {
                    MessageBox.Show(ex.Message);
                }

                finally
                {
                    conn.Close();
                }

            }

This is in windows form Load. So i’m looking to add a button on my form which refreshes the listbox items list

Answer 1

Add a Method

private void ShowPeople()
{
    // Put your code;
}

and then use the same in your button click

private void Button_Click(object sender,EventArgs e)
{
    ShowPeople();
}