protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ddlArticleClass.DataSource = article.GetDataSetArticleClass(); ddlArticleClass.DataTextField = "ClassName"; ddlArticleClass.DataValueField = "ClassID"; ddlArticleClass.DataBind(); ddlArticleClass.Items.Add(new ListItem("全部", "0")); ddlArticleClass.Items[0].Selected = true; gvArticleList.DataSource = article.GetArticleList(); gvArticleList.DataBind(); } }