Question

I have a form which contains a button and a DataGridView.

The button allows me to add a new person to the database :

DataRow drow = sql.ds.Tables["Etablissement"].NewRow();
            drow[1] = nom.Text; //drow[0] it's an auto-countign var
            drow[2] = string.IsNullOrEmpty(ville.Text) ? DBNull.Value : (object)ville.Text;
            sql.ds.Tables["Etablissement"].Rows.Add(drow);
            SqlCommandBuilder cmb = new SqlCommandBuilder(daEtablissement);
            daEtablissement.Update(sql.ds, "Etablissement");
            dgv.Refresh(); // dgv : DataGridView that i'm usign
            XtraMessageBox.Show("Bien Ajouter !");
            Videz();
            nom.Focus();

the problem is when the DataGridView is refreshed the code of the person I added doesn’t display, how can I solve this?

Answer 1

The Refresh method is just a UI refresh and not data binding refresh. The best and simple way is to use a BindingSource which has your DataTable as a data source, and the BindingSource is set as the data source of the grid. Usually when you update the DataTable, the grid should show the new data, but if it doesn’t happen you can call BindingSource.ResetBindings(false)

Code:

BindingSource bindingSource = new BindingSource();
bindingSource.DataSource = myDataTable;
myGrid.DataSource = bindingSource;

If for any reason updating the data table does not refresh the grid you can call:

bindingSource.ResetBindings(false); // put true if your metadata has also changed