c# - Gridview on Content page RowCommand does not fire - ViewState? -

the problem i'm having rowcommand of gridview not fire. i've read through millions of posts, , result think i'm more confused. so, if can see i've done wrong here, please point out.

i did ask similar question couple of weeks ago, using gridview nested in datalist , using 'include' siblings of entitydatasource display siblings, many side of relationship referral, it's fine display, figuring out edit update , delete nightmareish. i've tied simplify it, stopped in tracks because i'm losing controls somewhere in postbacks.

i have master page contentplaceholder:

<%@ master language="c#" autoeventwireup="true" codebehind="site.master.cs" inherits="homelessstudent.web.sitemasterpage" viewstatemode="inherit" enableviewstate="true" %>          <asp:contentplaceholder id="contentplaceholderagent" runat="server">         </asp:contentplaceholder> 

on agent page-

<asp:content id="content" contentplaceholderid="contentplaceholderagent" runat="server"> <asp:panel id="siblingpanel" runat="server" viewstatemode="enabled" visible="true">            <asp:gridview id="siblinggridview" runat="server" cssclass="grid"         autogeneratecolumns="false"          datakeynames="id"          showfooter="true"          ondatabound="siblinggridview_databound"          onrowediting="siblinggridview_rowediting"          onrowupdating="siblinggridview_rowupdating"          onrowcommand="siblinggridview_rowcommand"          onrowdeleting="siblinggridview_rowdeleting" viewstatemode="enabled" clientidmode="static">         <columns>             <asp:templatefield headertext="name" sortexpression="siblingname">                 <edititemtemplate>                     <asp:textbox runat="server" text='<%# bind("siblingname") %>' id="textbox1"></asp:textbox>                 </edititemtemplate>                 <itemtemplate>                     <asp:label runat="server" text='<%# bind("siblingname") %>' id="label1"></asp:label>                 </itemtemplate>                 <footertemplate>                     <asp:textbox runat="server" id="newsiblingname" ></asp:textbox>                 </footertemplate>             </asp:templatefield>             <asp:templatefield headertext="edit" showheader="false">                 <edititemtemplate>                     <asp:linkbutton runat="server" text="update" commandname="update"  id="updatelinkbutton" ></asp:linkbutton>&nbsp;<asp:linkbutton runat="server" text="cancel" commandname="cancel" causesvalidation="false" id="linkbutton2"></asp:linkbutton>                 </edititemtemplate>                 <itemtemplate>                     <asp:linkbutton runat="server" text="edit" commandname="edit" id="editlinkbutton" clientidmode="static"></asp:linkbutton>                 </itemtemplate>                 <footertemplate>                     <asp:linkbutton runat="server" commandname="addnew" text="add" id="addnewlinkbutton"></asp:linkbutton>                   </footertemplate>             </asp:templatefield>             <asp:commandfield showdeletebutton="true" showheader="true" headertext="delete"></asp:commandfield>         </columns>     </asp:gridview> </asp:panel> 

code behind (binding data here because show siblings belong specific record, id (guid) record in querystring, maybe...

            if (ispostback == false)         {             if (request.querystring["id"] == null)             {                 if (session["studentid"] == null)                 {                     response.redirect("studentpage.aspx");                 }                 else                 {                     referral = getmostrecentreferral((string)session["studentid"]);                     populateui(referral);                 }              }             else             {                 referral = getthisreferral(request.querystring["id"]);                 populateui(referral);             }         } 

then, in populateui(referral)

some stuff... fillsiblinggrid(); string studentid = ((referral.studentid).tostring()).trim(); getselectedstudentdeatails(studentid); session["referralid"] = (guid)referral.id; 

and fill siblings grid-

        private void fillsiblinggrid()     {         if (referral != null)         {             list<sibling> siblings = new list<sibling>();             using (homelessstudentdataentities db = new homelessstudentdataentities())             {                 siblings = (from s in db.siblings                             s.referralid == referral.id                             select s).tolist();             }             if (siblings.count > 0)             {                 siblinggridview.datasource = siblings;                 siblinggridview.databind();             }             else             {                 int totalcolumns = siblinggridview.rows[0].cells.count;                 siblinggridview.rows[0].cells.clear();                 siblinggridview.rows[0].cells.add(new tablecell());                 siblinggridview.rows[0].cells[0].columnspan = totalcolumns;                 siblinggridview.rows[0].cells[0].text = "no siblings found";             }         }     } 

i faced similar problem. enabling grid view state resolved problem