datarow的问题!!!

[dhdhdh]

代码如下:
DataView:dv,DataTabe dt;

dv.Sort="level1";
dt=dv.Table;

DataGrid1.DataSource=dt;
DataGrid1.DataBind();
foreach(DataRow dr in dt.Rows)
{
dtr=dr["level1"].ToString().Trim();
Response.Write(dtr+"\n");
}

我看datagrid中的level1列是排了序的，但是response.write的结果却不是
我排好序的rows,还是原来的，为何！！！
我的本意是：
想将dv按level1排序，排好序的dv给Table,再操作Table的rows,此时的rows是排好序的。

[wacle]

because datagrid's datasource in essencially a dataview.the data in dataset don't be sorted actually.what you see is just a view.
if you want to output sorted data.you'd better read items from datagrid.

[chnking]

排序的是DataView,你要从DataView中去DataRow:

foreach(DataRowView dr in dv.Rows)

[CMIC]

up

[dhdhdh]

to:wacle
if i don't have a datagrid(not to use it),what can i do from dataset or dataview.
to:chnking
foreach(DataRowView dr in dv.Rows) this is an error line;

[ybtaylor]

DataView:dv,DataTabe dt;

dv.Sort="level1";
dt=dv.Table;

DataGrid1.DataSource=dt;
DataGrid1.DataBind();
foreach(DataRow dr in dv.Rows)
{
dtr=dr["level1"].ToString().Trim();
Response.Write(dtr+"\n");
}

[dhdhdh]

up

[LineCorner]

up

[chnking]

for(int i=0 ; i<dv.Count ; i++)
{
DataRowView myRow = dv[i];
string dtr=myRow["level1"].ToString().Trim();
Response.Write(dtr+"\n");
}

[wwzwwz427]

datable_temp=DataSet1.Tables["order"].Clone();
DataRow[] rows=DataSet1.Tables["order"].Select("ordername='nike'","FieldSeries ASC");
for(int i=0;i < rows.Length; i++)
{
dr = datable_temp.NewRow();
for(int j = 0; j<datable_temp.Columns.Count; j++){
dr[j]=rows[i][j];
}
datable_temp.Rows.Add(dr);
}
不用for循环能否一次性的插入到datatable中,因为我的数据两比较大,要循环5000-20000次
将导致系统死!我想一次处理50条记录到datatable中,这样一来,就只循环100-400次,请问怎么实现?