private void btnSearch_Click(object sender, EventArgs e) { PeilvDAL dal = new PeilvDAL(); string riqi = dtpRiqi.Value.Date.ToString("yyyy-MM-dd"); string liansai = cbLiansai.Text; DataSet ds = dal.SearchPeilvFromKaijiang(riqi, liansai); dgPeilv.DataSource = ds.Tables[0]; //更新联赛集合 cbLiansai.Items.Clear(); cbLiansai.Items.Add("全部"); DataSet dsLiansai = new PeilvDAL().GetPeilvLiansaiFromKaijiang(riqi); foreach (DataRow row in dsLiansai.Tables[0].Rows) { cbLiansai.Items.Add(row["liansai"].ToString()); } cbLiansai.SelectedIndex = 0; }