You have to persists the data between postbacks,
You have many options here: by
You have many options here: by
Session, ViewState, Cache and some other.protected void Page_Load(object sender, EventArgs e){ if (Page.IsPostback) { dt = Session["data_table"] as DataTable; }}protected void btnTextDisplay_Click(object sender, EventArgs e){ if (dt == null) { dt = new DataTable(); DataColumn dc1 = new DataColumn("Name"); DataColumn dc2 = new DataColumn("City"); dt.Columns.Add(dc1); dt.Columns.Add(dc2);
} DataRow dr = dt.NewRow(); dr[0] = txtName.Text; dr[1] = txtCity.Text; dt.Rows.Add(dr); gvDisplay.DataSource = dt; gvDisplay.DataBind(); Session["data_table"] = dt;}
