<form id="form1" method="post" runat="server"> <asp:table id="table1" runat="server"></asp:table> <asp:placeholder id="placeholder1" runat="server"></asp:placeholder><br><br> <asp:button id="button1" runat="server" text="添加一行"></asp:button> </form> private void button1_click(object sender, system.eventargs e) 
{ 
addtextboxs(); if(viewstate["count"]==null)addbutton(); viewstate["count"]=convert.toint16(viewstate["count"])+1; 
} private void addtextboxs() { tablerow tr=new tablerow(); tablecell tc1=new tablecell(); textbox t=new textbox(); t.id="tb"+table1.rows.count; tc1.controls.add(t); tablecell tc2=new tablecell(); dropdownlist dpl=new dropdownlist(); dpl.id="dpl"+table1.rows.count; for(int i=0;i<10;i++)dpl.items.add(i.tostring()); tc2.controls.add(dpl); tr.cells.add(tc1); tr.cells.add(tc2); table1.rows.add(tr); } private void addbutton() { button b=new button(); b.id="btn"; b.text="按钮"; b.click += new system.eventhandler(btn_click); placeholder1.controls.add(b); } private void btn_click(object sender, system.eventargs e) { for(int i=0;i<table1.rows.count;i++) 
{ response.write(((textbox)table1.rows[i].findcontrol("tb"+i)).text+((dropdownlist)table1.rows[i].findcontrol("dpl"+i)).selectedvalue+"<br>"); 
} } private void page_load(object sender, system.eventargs e) { if(viewstate["count"]!=null) { for(int i=0;i<convert.toint16(viewstate["count"]);i++) addtextboxs(); addbutton(); } } 注意不要添加if(!ispostback){}，相反你倒可以添加if(ispostback)，因为页面第一次加载不可能已经按下按钮了。 新闻热点
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