Having trouble with the above. Here is the cs file. This is an older web site and am not using designer files.
using EP.BumplesMagazine;
using EP.BumplesMagazine.BusinessLogicLayer.Newsletters;
namespace EP.BumplesMagazine.UI.Admin
{
public partial class SendingNewsletter : BasePage, ICallbackEventHandler
{
String callbackResult = "";
protected void Page_Load(object sender, EventArgs e)
{
Boolean isSending = false;
Newsletter.Lock.AcquireReaderLock(Timeout.Infinite);
isSending = Newsletter.IsSending;
Newsletter.Lock.ReleaseReaderLock();
// If no newsletter is currently being sent, show a panel with a message saying so.
// Otherwise register the server-side callback procedure to update the progressbar
if (!this.IsPostBack && !isSending)
{
panNoNewsletter.Visible = true;
panProgress.Visible = false;
}
else
{
String callbackRef = this ...
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