Hi All,
I have specific requirement in asp.net project.
I have datagrid, in that in have one dotnet list control which stores the items.And it is multiselect. Onclicking >> button i want to move selected items from dotnetListControl to HTML Select(listbox) control.
In DataGrid:
DotnetListBOX Control(i multiselect few items then)---> >>(Click on the button) ----> add to new listbox(Html Select)

I tried with ItemDataBound but still i could not able to get it.
(Problem: When Datagrid is rendered, i am not able to get unique id for HTML select control).

Kindly let me know if any other good idea ...

Thanks and with regards,


Not sure if this is what you are attempting to do.


Datagrid has a 2 listbox controls. When clicking >> button, click event should move selected items from listbox1 to listbox2


'Code within >> button click event
For Each gridItem As DataGridItem In DataGrid1.Items
     Dim list1 As ListBox = CType(gridItem.FindControl("List1"), ListBox)
     Dim list2 As ListBox = CType(gridItem.FindControl("List2"), ListBox)

     For Each item As ListItem In list1.Items
          If item.Selected Then
          End If

Even >> button is in the same grid.
If there are 5 rows in a grid, then
listbox1 >> buttons Listbox2
listbox1 >> buttons Listbox2
listbox1 >> buttons Listbox2
listbox1 >> buttons Listbox2
listbox1 >> buttons Listbox2
will appear.The IDs for all these control after rendering is different like dgGrid_ctl2:listbox1
dgGrid_ctl3:listbox1 etc ...
Similarly for >> button and listbox 2.

Still i could not able to fix this error.
Kindly provide some more details.

Thanks and with regards,

I mean to say:
I dont want to refresh page everytime i click the image button.
I need to add this from server.
Like writeing javascript in class file.


<!-- Code in ASPX DataGrid -->
    <input type="button" value="Move" onclick="javascript:SwapList('<%# (Container.ItemIndex + 1) %>');">
//Javascript Code: 
//function should take an input of the current index
function SwapLists(idx) {

    var inpt = document.frmProdDetail.getElementsByTagName("input");
    var list1, list2;
    for (var i = 0; i < inpt.length; i++)
        if (inpt[i].id.match('ctl' + idx + '_MyAspxListBox1') != null) {
            list1 = inpt[i];                 
        } else if (inpt[i].id.match('ctl' + idx + '_MyAspxListBox2') != null) {
            list2 = inpt[i];

    //Write your javascript to transfer selected items from list1 to list2