protected void BtnSearch_Click(object sender, EventArgs e)
 {
     GridView2.DataSource = Cat.Search(RadioButtonList1.SelectedValue, txtSearch.Text);
     GridView2.DataBind();
     lblaMsg.Text            = "";
     BtnRemove.Enabled       = false;
     BtnUpdate.Enabled       = false;
     GridView2.SelectedIndex = -1;
 }