Anas Ghanem

By default .net runtime uses the cookies to remember the session Id between the requests ,
but when using Cookie less sessions ,the runtime inserts the Session Id to the requested url  ,
this way the runtime can remember the session id and prevent the session loss .

The problem is , when using the Menu and TreeView Controls , these controls doesn't handle this issue ,
so when those controls display there data from the Site maps, they didn't append the session id to the Navigation Urls of there Items ,
and so when the User Navigate to a page using those controls , he will redirected to a Url that didn't contains the session Id,
and so the runtime can't extract the session id , Hence the session will be  lost .

The Solution:
the solution  is to Manually Append the Session Id to NavigateUrl  of the Items for those Navigation controls,
we can use HttpContext.Current.Response.ApplyAppPathModifier to modify the Item Urls as Follows:

For the Menu Control , we can use MenuItemDataBound Event Handler to accomplish this:

 protected void Menu1_MenuItemDataBound(object sender, MenuEventArgs e)
 {
   // appened the SessionId to Menu Item URL to Avoid sessin loss
   e.Item.NavigateUrl = HttpContext.Current.Response.ApplyAppPathModifier(e.Item.NavigateUrl);
 }

For the TreeView Control, we can use TreeNodeDataBound  to accomplish this

protected void TreeView1_TreeNodeDataBound(object sender, TreeNodeEventArgs e)
  {
    e.Node.NavigateUrl = HttpContext.Current.Response.ApplyAppPathModifier(e.Node.NavigateUrl);
  }

Regards,