（转）得到数据库中的某一列的所有值并将其存到数组中

SqlConnection SqlConn = new SqlConnection("Server=.;Trusted_Connection=YES;DataBase=daigoudian");//创建数据库链接到daigoudian

        public void get_idstr(string[] str)
        {
            SqlDataAdapter Sqa = new SqlDataAdapter("Select id from daigoudian", SqlConn);
            DataSet ds = new DataSet();
            Sqa.Fill(ds);
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                DataRow dr = ds.Tables[0].Rows[i];//得到行数据集，实际是个数组……
                str[i] = dr.ItemArray[0].ToString();
            }
        }//获取所有列id 的值并存入数组str中