protected void btnSaveUser_Click(object sender, EventArgs e) { using (DbUser db = new DbUser()) { for (int i = 0; i < 5; i++) { if (db.Fill("id='" + i.ToString() + "'")) { db.UserName = ((TextBox)this.FindControl("tbUserName" + i.ToString())).Text.Trim(); db.Password = ((TextBox)this.FindControl("tbPassword" + i.ToString())).Text.Trim(); db.Update(); } else { db.ID = i; db.UserName = ((TextBox)this.FindControl("tbUserName" + i.ToString())).Text.Trim(); db.Password = ((TextBox)this.FindControl("tbPassword" + i.ToString())).Text.Trim(); db.Insert(InsertOp.None); } } } }