I think my example is probably the same as MSDN (Saucer Shi), and I think the problem is, why is the dlreplylist of my page "undefined value" before binding (that is, after clicking the Edit button)? The following figure (upper half): While the Saucer (Shi) version of the example, at the same breakpoint, DataList instance Itemslist is present (the second half)
Page frame:
<asp:datagrid width= "80%"
Datakeyfield= "PostID" id= "dgpostlist" runat= "Server"
allowpaging= "True" pagesize= "ten" autogeneratecolumns= "false"
Onpageindexchanged= "Trunpage" oneditcommand= "Editpost"
Ondeletecommand=deletepost Onupdatecommand=updatepost oncancelcommand=cancelpost>
<pagerstyle mode= "NumericPages" position= "Topandbottom" horizontalalign= "Center" ></pagerstyle>
<columns>
<asp:TemplateColumn>
<itemtemplate>
<table id= "Tbpostrecord" bgcolor= "#dfdfdf" width= "100%" >
... <div align= "right" >
<asp:imagebutton runat= "Server" id= "Imgbtedit" commandname= "edit" imageurl= "Images/edit.gif" alternatetext= "editing" ></asp:ImageButton>
<asp:imagebutton runat= "Server" id= "Imgbtdelete" commandname= "delete" imageurl= "Images/del.gif" alternatetext= " Delete "></asp:ImageButton>
......
<asp:datalist id= "dlreplylist" width= "100%" Repeatcolumns=1
Datakeyfield= "PostID" repeatdirection=vertical runat= "Server"
Oneditcommand= "Editreply" ondeletecommand=deletereply
Onupdatecommand=updatereply oncancelcommand=cancelreply
