private void showWcid() { Rblcourse.Items.Clear(); string classselect = Rblclass.SelectedValue; if (!string.IsNullOrEmpty(classselect)) { string yearselect = Rblyear.SelectedValue; string gradeselect = Rblgrade.SelectedValue; string termselect = Rblterm.SelectedValue; LearnSite.BLL.Works wbll = new LearnSite.BLL.Works(); Rblcourse.DataSource = wbll.ShowWclassWcids(Int32.Parse(yearselect), Int32.Parse(gradeselect), Int32.Parse(classselect), Int32.Parse(termselect)); Rblcourse.DataTextField = "Wcid";//要改为序号 Rblcourse.DataValueField = "Wcid"; Rblcourse.DataBind(); int mcount = Rblcourse.Items.Count; if (mcount > 0) { Rblcourse.SelectedIndex = 0; for (int i = 0; i < mcount; i++) { int ks = i + 1; Rblcourse.Items[i].Text = ks.ToString(); } } } }