i'm trying add rows table when click button, i'm using session when page gets loaded again don't loose rows inserted. inserts 1 row , inserts them in table down.
protected void page_load(object sender, eventargs e) { if (!ispostback) { gestorbd = new gestorbdt.gestorbd("msdaora", "fs", "pass", "oracle"); cadsql = "select * pcarticulos"; gestorbd.querydb(cadsql, "arts", dsgeneral); c.loaddropdownlist(ddlarticulos, dsgeneral, "arts", "nombre"); } if (session["ta"] != null) { tablaped = (table)session["ta"]; this.controls.add(tablaped); } } protected void btadd_click(object sender, eventargs e) { table ta = tablaped; tablerow t = new tablerow(); tablecell c = new tablecell(); c.text = ddlarticulos.selectedvalue.tostring(); t.cells.add(c); tablecell c2 = new tablecell(); c2.text = tbcantidad.text; t.cells.add(c2); ta.rows.add(t); session["ta"] = ta; } 
aspx:
<!doctype html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <title></title> </head> <body style="background-color: #ffffff"> <form id="form1" runat="server"> <div style="height: 320px; background-color: #336699" id="div"> <h3> <asp:label id="label1" runat="server" forecolor="white" style="font-weight: 700; font-size: large; font-family: 'segoe ui', tahoma, geneva, verdana, sans-serif" text="alta pedidos"></asp:label> </h3> <asp:label id="label2" runat="server" style="font-weight: 700; color: #ffffff; font-family: 'segoe ui', tahoma, geneva, verdana, sans-serif" text="artÃculos"></asp:label> <asp:dropdownlist id="ddlarticulos" runat="server" style="z-index: 1; left: 122px; top: 55px; position: absolute; width: 201px; height: 19px;"> </asp:dropdownlist> <br /> <asp:label id="label3" runat="server" forecolor="white" style="font-weight: 700; font-family: 'segoe ui', tahoma, geneva, verdana, sans-serif; z-index: 1; left: 12px; top: 90px; position: absolute" text="cantidad"></asp:label> <asp:textbox id="tbcantidad" runat="server" style="z-index: 1; left: 120px; top: 92px; position: absolute; width: 194px; right: 839px"></asp:textbox> <br /> <br /> <br /> <asp:button id="btagregat" runat="server" text="agregar la lista" onclick="btagregat_click" /> <br /> <br /> <asp:button id="button1" runat="server" onclick="button1_click" text="borrar lista" /> <br /> <br /> <asp:table id="tablaped" runat="server" style="color: #ffffff; font-family: 'segoe ui', tahoma, geneva, verdana, sans-serif; font-weight: 700; text-align: center;" width="378px"> <asp:tablerow runat="server"> <asp:tablecell runat="server">articulos</asp:tablecell> <asp:tablecell runat="server">cantidad</asp:tablecell> </asp:tablerow> </asp:table> </div> </form> </body> </html>
in page_load event, adding table altogether new control web page. should adding rows.
modify page_load event below,
protected void page_load(object sender, eventargs e) { if (!ispostback) { gestorbd = new gestorbdt.gestorbd("msdaora", "fs", "pass", "oracle"); cadsql = "select * pcarticulos"; gestorbd.querydb(cadsql, "arts", dsgeneral); c.loaddropdownlist(ddlarticulos, dsgeneral, "arts", "nombre"); } if (session["ta"] != null) { tablaped.rows.addrange(((list<tablerow>)session["ta"]).toarray()); } } modify click event below,
protected void btadd_click(object sender, eventargs e) { table ta = tablaped; tablerow t = new tablerow(); tablecell c = new tablecell(); list<tablerow> listtablerows = session["ta"] != null ? (list<tablerow>)session["ta"] : new list<tablerow>(); c.text = ddlarticulos.selectedvalue.tostring(): t.cells.add(c); tablecell c2 = new tablecell(); c2.text = tbcantidad.text: t.cells.add(c2); ta.rows.add(t); listtablerows.add(t); session["ta"] = listtablerows; } this work per requirement. let me know if face issue. can use viewstate instead of session, if want retain table in scope of page.
hope helps!
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