一、DataTable.Rows.Add(DataRow.ItemArray);
二、DataTable.ImportRow(DataRow)
三、设置DataTable的tablename,然后.Rows.Add
第一种方法在项目中用到，确实好用！不过感觉第二种应该更好用一些.
案例
DataTable newDt = new DataTable();
newDt.Columns.Add("id", typeof(string));
newDt.Columns.Add("name", typeof(string));
newDt.Columns.Add("url", typeof(string));
newDt.Columns.Add("description", typeof(string));
newDt.Columns.Add("parentid", typeof(string));
newDt.Columns.Add("icon", typeof(string));
newDt.Columns.Add("sortIndex", typeof(int));
DataRow drr = newDt.NewRow();
DataRow dr = newDt.NewRow();
//父节点-表
string sql = "select * from tb_APPMenu where parentID ='' order by sortindex asc";
DataTable dt = helper.GetDataTable(sql);
//子节点-表(parentID=父表-ID)
string sqlparent = "select * from tb_APPMenu where parentID !='' order by sortindex asc";
DataTable dtparent = helper.GetDataTable(sqlparent);
//父节点
for (int i = 0; i < dt.Rows.Count; i++)
{
//主菜单
drr = newDt.NewRow();
drr["id"] = dt.Rows[i]["id"].ToString();
drr["name"] = dt.Rows[i]["name"].ToString();
drr["url"] = dt.Rows[i]["url"].ToString();
drr["description"] = dt.Rows[i]["description"].ToString();
drr["parentid"] = dt.Rows[i]["parentid"].ToString();
drr["icon"] = dt.Rows[i]["icon"].ToString();
drr["sortIndex"] = dt.Rows[i]["sortIndex"];
newDt.Rows.Add(drr);
//子菜单
foreach (DataRow drt in dtparent.Rows)
{
if (dt.Rows[i]["id"].ToString() == drt["parentid"].ToString())
{
//--死办法--
//dr = newDt.NewRow();
//dr["id"] = drt["id"].ToString();
//dr["name"] = drt["name"].ToString();
//dr["url"] = drt["url"].ToString();
//dr["description"] = drt["description"].ToString();
//dr["parentid"] = drt["parentid"].ToString();
//dr["icon"] = drt["icon"].ToString();
//dr["sortIndex"] = drt["sortIndex"];
//newDt.Rows.Add(dr);
//该行已经属于另一个表的解决方法
//方法一
newDt.Rows.Add(drt.ItemArray);
// 方法二
newDt.ImportRow(drt);
}
}
}
转播
