asp.net listview Container.DataItemIndex

Question

I am trying to pass commandarguments like

<asp:Button ID="btnSave" runat="server" Text="Save" CommandName='<%# Eval("Section_Name")%>' CommandArgument='<%# Container.DataItemIndex %>' />

but I get this error:

'System.Web.UI.Control' does not contain a definition for 'DataItemIndex' and no extension method 'DataItemIndex' accepting a first argument of type 'System.Web.UI.Control' could be found (are you missing a using directive or an assembly reference?)

What is the correct method to pass the commandarguments? This button is inside and updatepanel in the itemtemplate of a listview.

Thanks, Ali

score 8 · Answer 1 · answered Oct 19 '09 at 16:45

8

Thanks a lot DavidGouge and Jason Berkan. I made it working using

CommandArgument='<%#DataBinder.Eval(Container, "DataItemIndex")%>'

However, I think both of the suggestions should also work.

answered Oct 19 '09 at 16:45

score 6 · Answer 2 · answered Jul 11 '12 at 05:16

6

If you're using Repeater, you can use "Container.ItemIndex" to retrieve the item index.

answered Jul 11 '12 at 05:16

Mayur Bhavsar

61
1
2

DavidGouge · Answer 3 · 2009-10-19T16:30:44.223

3

It's because the button is inside an update panel which is the "Container" and you're trying to get the DataItemIndex of that UpdatePanel which obviously doesn't exist.

Could you pass the "Id" of the item you'll be saving to the CommandArgument directly with Eval("WhateverId") ?

EDIT: If you really do need the DataItemIndex, this will get it for you:

<%# ((ListViewDataItem)Container).DataItemIndex %>

edited Oct 19 '09 at 16:30

answered Oct 19 '09 at 15:25

DavidGouge

4,583
6
34
46

I would use that then as you key to what you are saving. – DavidGouge Oct 19 '09 at 15:46
No but my situation requires the use of the index of the item rather than ID. How can I get that in an update panel? – Oct 19 '09 at 15:52
You could try Container.Container.DataItemIndex – DavidGouge Oct 19 '09 at 16:11
No, scratch that, that doesn't work either. Just running an example, I'll post back if anything comes up. – DavidGouge Oct 19 '09 at 16:21
Ok, give this a try: <%# ((ListViewDataItem)Container).DataItemIndex %> – DavidGouge Oct 19 '09 at 16:26

Jason Berkan · Answer 4 · 2009-10-19T16:33:06.350

2

In this situation, I've found it easiest to set the CommandArgument in the code behind. In the ItemCreated event:

Dim btnSave As Button = e.Item.FindControl("btnSave")
btnSave.CommandArgument = e.Item.DataItemIndex

edited Oct 19 '09 at 16:33

answered Oct 19 '09 at 16:27

Jason Berkan

8,734
7
29
39

1

TBH, I also tend to fall back to code behind once the binding markup starts to get too complicated. – DavidGouge Oct 19 '09 at 16:29

asp.net listview Container.DataItemIndex

4 Answers4

Linked