以DataRow级别的数据向DataTable里面填充

private void LoadData()
 {
        //gridView绑定数据
        DataTable deptDt = GetDeptCustomsByWhere(string.Format("ParentID={0}", 0), null),
                  dt = deptDt.Clone();//从deptDt获取表结构
        DataSet ds = new DataSet();
        if(deptDt.Rows.Count>0)
        {
            foreach (DataRow row in deptDt.Rows)
            {
                dt.Rows.Add(row.ItemArray);//向dt中添加父节点
                DataTable deptSonDt = GetDeptCustomsByWhere(string.Format("ParentID={0}", row["ID"]),null);
                if (deptSonDt.Rows.Count>0)
                {
                    foreach (DataRow dataRow in deptSonDt.Rows )
                    {
                        dt.Rows.Add(dataRow.ItemArray);//添加当前节点的子节点
                    }
                }
            } 
        }
        gvList.DataSource = dt;
        gvList.DataBind();
 }private void LoadData()
 {
        //gridView绑定