protected void Del_Click(object sender, EventArgs e) { string Id = ""; if (VideoList.Items.Count > 0) { for (int i = 0; i < VideoList.Items.Count; i++) { CheckBox Cbox = VideoList.Items[i].FindControl("Cbox") as CheckBox; if (Cbox.Checked) { Id = Id + Cbox.ToolTip + ","; } } if (Id.Length > 0) { Id = Id.Remove(Id.Length - 1, 1); if (bll.DelVideoByIds(Id)) { MessageBox.Show(this.Page, "删除成功!"); } else { MessageBox.Show(this.Page, "删除失败!"); } } } dataBind(""); }