c# - CommandName = Insert in EditTemplate of ASP.NET ListView throws "Insert can only be called on an insert item" -


i supporting web application. in that, there 2 tables - taxcode , taxrate. taxcode has 1 many relationship taxrate.

the ui has listview layouttemplate, itemtemplate , edittemplate show taxcode. when users selects tax code in edittemplate shows cutomgridview allows user create or edit tax rates particular tax code. customgridview has 3 rows each has 4 template fields shown below.

<asp:templatefield headerstyle-cssclass="highlighttitlebar" headerstyle-width="5%" headerstyle-height="30px"> <headertemplate>   <custom:customimagebutton id="imgadd" runat="server" imageurl="image/add_round.gif" onclick="imgaddtaxratedetail_click" causesvalidation="false"/> </headertemplate> <itemtemplate>    <custom:customimagebutton id="imgedit" runat="server" imageurl="image/edit.gif"  commandname="edit" /> </itemtemplate>           <edititemtemplate>    <asp:imagebutton id="imgupdate" runat="server" imageurl="image/update.gif" commandname="update" />    <asp:hiddenfield runat="server" id="hfid" value='<%# bind("id") %>' /> </edititemtemplate> <footertemplate>    <asp:imagebutton id="imginsert" runat="server" imageurl="image/insert.gif" commandname="insert" onclick="imginsert_click" /> </footertemplate>

each row in customgridview template field. in, below image effectiveon section customgridview,

how customgridview binded listview

when try save taxrate proper effectiveon , rate, throws "insert can called on insert item. ensure inserttemplate has button commandname=insert." error listview doesn't have inserttemplate. record gets inserted db.

please let me know if there way resolve issue?

the error self explanatory.
take @ this: https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listview.insertitemtemplate(v=vs.110).aspx

so can either of these things.

  1. create insertitemplate , insert using iteminserted event of listview
  2. change commandname commandname="insertdata" , catch event on itemcommand

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