在网上找的 也不知道对不对 但是不知道往下怎么做了
string sql = "select LOW_STAGE from POINT_STAGE where NAME = " + Didian ;
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter(sql, conn);
da.Fill(ds, "POINT_STAGE");
BindingSource bs = new BindingSource (ds, "POINT_STAGE");
List<PointPairList> Datasource = new List<PointPairList>();