How to keep checkbox state in gridview while paging?

[Sophie]

Is it possible to use session by cast it to an array to keep gridview primary
key?
I have the following code in place, but it gives me error saying "Unable to
cast object of type 'System.String' to type 'System.Collect ions.ArrayList" .
Please help...

private void StoreCheckedIte ms()
{
ArrayList reasonIDList = new ArrayList();
int index = -1;
foreach (GridViewRow row in gvReason.Rows)
{
index = (int)gvReason.D ataKeys[row.RowIndex].Value;
bool result = ((CheckBox)row. FindControl("ch kReason")).Chec ked;
if (Session[CHECKED_ITEMS] != null)
reasonIDList = (ArrayList)Sess ion["CHECKED_IT EMS"];
if (result)
{
if (!reasonIDList. Contains(index) )
reasonIDList.Ad d(index);
}
else
reasonIDList.Re move(index);
}

Thanks!

Sophie

[Dave Sexton]

Hi Sophie,

What does the code look like that assigns Session["CHECKED_IT EMS"]?

I assume that it's being assigned to a string, hence the error.

--
Dave Sexton

"Sophie" <So****@discuss ions.microsoft. comwrote in message
news:57******** *************** ***********@mic rosoft.com...

Is it possible to use session by cast it to an array to keep gridview
primary
key?
I have the following code in place, but it gives me error saying "Unable
to
cast object of type 'System.String' to type
'System.Collect ions.ArrayList" .
Please help...

private void StoreCheckedIte ms()
{
ArrayList reasonIDList = new ArrayList();
int index = -1;
foreach (GridViewRow row in gvReason.Rows)
{
index = (int)gvReason.D ataKeys[row.RowIndex].Value;
bool result = ((CheckBox)row. FindControl("ch kReason")).Chec ked;
if (Session[CHECKED_ITEMS] != null)
reasonIDList = (ArrayList)Sess ion["CHECKED_IT EMS"];
if (result)
{
if (!reasonIDList. Contains(index) )
reasonIDList.Ad d(index);
}
else
reasonIDList.Re move(index);
}

Thanks!

Sophie