Question

I have an question, On my page i have a ListView control, I also have a button that has CommandArgument. I know i can read and find a control in the ListView as :

ListView.Items[i].FindControl('controlname'); 

and my button in ListView is like that

 asp:Button ID='WisdomButton' runat='server' CommandName='UpdateWisdom'  CommandArgument='<%# need my index for Item[i] to post here %>'                                    OnCommand='UpdateWisdom' Text='Update'   /> 

I want to add index value in runtime to the CommantParameter, so when i go to the Function onCommand i will know exactly from what row[i] i Need to get my controls from ListView.

So my question is, how do i dinamicly add index of ListView.Rows[i] into CommmandArgument for the Button in runtime ?

Thanks in advance.

Answer 1

Check out the API

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listviewcommandeventargs.aspx

The ListViewCommandEventArgs item has an index, IE it is already available in the argument

ListViewDataItem dataItem = (ListViewDataItem)e.Item; int i = dataItem.DisplayIndex; 

But from here you will have access to those controls

e.Item.FindConrol('controlName'); 

If you are calling the method a different way you could aways assign the index through an ItemDataBound Event

void MyListView_ItemDataBound(object sender, ListViewItemEventArgs e) {     ((Button)e.Item.FindControl('WisdomButton')).CommandArgument = ((ListViewDataItem)e.Item).DisplayIndex; } 

OR try something like this for giggles

<asp:Button runat='server' CommandArgument='<%# DisplayIndex %>'/> // OR <asp:Button runat='server' CommandArgument='<%# NextIndex() %>'/>