asp.net 下拉列表无级数据绑定实现代码

代码如下: private string toadd = “├”.private void GetArticleCategory(string pid) { SqlConnection conn = new SqlConnection(“server=.;database=test;uid=sa;pwd=;”); string sql = “select Articlesgroup_id,Groupname from Articlesgroup where Articlesgroup_parent_id=@pid order by Groupname”; SqlCommand