databinding

Textbox value doesn't get updated

I have a asp.net page with a datalist with a textbox and a button on it, on page load the textbox gets text in it, if I change the text and press the button the text doesn't get updated. What am I doing wrong? { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { DataTable table = CategoryAccess.Ge...