private void btnAddnew_Click(object sender, EventArgs e) { CategoryBL objCate = new CategoryBL(); DataTable dt = objCate.Addnew(); if (dt.Rows.Count > 0) { txtCategoryID.Text = Convert.ToString(dt.Rows[0]["CategoryID"]); btnSave.Enabled = true; txtCategory.Enabled = true; txtCategory.Focus(); btnAddnew.Enabled = false; } }