DataTable en cliquant sur un boutton

   protected void Button1_Click(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {

                DataTable dt = new DataTable();
                dt.Columns.AddRange(new DataColumn[2] { new DataColumn ("CodeArticle", typeof(string)),
              new DataColumn("NomArticle", typeof(string)) });
                dt.Rows.Add("John Hammond", "United States");
                dt.Rows.Add("Mudassar Khan", "India");
                dt.Rows.Add("Suzanne Mathews", "France");
                dt.Rows.Add("Robert Schidner", "Russia");

GridView2.DataSource = dt;

                GridView2.DataBind();
            }
        }