Listbox selection fails

[HKS]

Hi everybody

I have a javascript to select and deselect items in a listbox depending on checkbox selection

The problem now i have is, i am calling the javascript from server side

What happens is as the listbox 1 get populated, and selected with checkbox selection in my application,

i have a button which refreshes the page thereby populating listbox2, with reference to the items selected in listbox1

So what is happening is,
- the user selects checkall-- all items get selected

- the user hits the refresh button -- all the items deselected and also checkbox is marked unchecked


Hope you can understand my issue
Please help me to fix this issue

I am using VB.net (.net 2.0)

Thanks to all

[shweta123]

Hi,

I am not clear with your question. What is the Expected result and what error are you getting?

Hi everybody

I have a javascript to select and deselect items in a listbox depending on checkbox selection

The problem now i have is, i am calling the javascript from server side

What happens is as the listbox 1 get populated, and selected with checkbox selection in my application,

i have a button which refreshes the page thereby populating listbox2, with reference to the items selected in listbox1

So what is happening is,
- the user selects checkall-- all items get selected

- the user hits the refresh button -- all the items deselected and also checkbox is marked unchecked


Hope you can understand my issue
Please help me to fix this issue

I am using VB.net (.net 2.0)

Thanks to all

[kenobewan]

You are able to refresh only part of the page using a panel. HTH.

[prabunewindia]

i didn't get what is need.
u explained what u r getting now. but not ur need.
plz paste the code also
Prabu

Hi everybody

I have a javascript to select and deselect items in a listbox depending on checkbox selection

The problem now i have is, i am calling the javascript from server side

What happens is as the listbox 1 get populated, and selected with checkbox selection in my application,

i have a button which refreshes the page thereby populating listbox2, with reference to the items selected in listbox1

So what is happening is,
- the user selects checkall-- all items get selected

- the user hits the refresh button -- all the items deselected and also checkbox is marked unchecked


Hope you can understand my issue
Please help me to fix this issue

I am using VB.net (.net 2.0)

Thanks to all

[HKS]

Thank to all for the replies
The code which i am using is

function onChange(checkBoxRef,listboxId)
        {
 
            var listboxRef = document.getElementById(listboxId)
 
            if(checkBoxRef.checked)
 
            {
 
               for (var i=0;i<listboxRef.options.length;i++)
 
 
                {
 
                    listboxRef.options[i].selected = true;
 
                }
            }
            else
 
            {
 
               for (var i=0; i<listboxRef.options.length; i++)
 
                {
 
                  listboxRef.options[i].selected = false;
 
                }
            }
        }
 
         function removeCheck(checkboxId)
        {
            document.getElementById(checkboxId).checked = false;
        }
 
 
 

And in code behind

lstAccounts.Attributes.Add("onChange", "javascript:removeCheck('" + chkAll.ClientID + "');")
        chkAll.Attributes.Add("onClick", "javascript:onChange(this, '" + lstAccounts.ClientID + "');")
 
 

This code works fine.
Here suppose the listbox items selected and checkbox is checked,
I have another button clcik event

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    DataBindListbox2()
 
    End Sub
 

When i hit this button, all the selection of lstacounts is gone and also the checkbox check
How can i reselect the lstaccounts and checkbox, coz Databindlistbox2 is based on lstaccounts selected items
Hope i am more clear now
I tried a lot, but not able to figure out
Please help me

Thanks