用ViewState来保存
ViewState["dataset"]=dataset1;
if(ViewState["dataset"]==null)
dataset1=.....//填充
else
dataset1=(DataSet)ViewState["dataset"];//从ViewState中取
ViewState["dataset"]=dataset1;
if(ViewState["dataset"]==null)
dataset1=.....//填充
else
dataset1=(DataSet)ViewState["dataset"];//从ViewState中取
{
dataset1=.....//填充
ViewState["dataset"]=dataset1;
}
else
dataset1=(DataSet)ViewState["dataset"];//从ViewState中取