protected void btnSubmit_Click(object sender, EventArgs e)
{
// Check email format
string email = txtEmail.Text.Trim();
string result = new Validator().IsEmail(email, GetString("unsubscribe.invalidemailformat")).Result;
if (String.IsNullOrEmpty(result))
{
bool requestSent = false;
int siteId = 0;
if (CMSContext.CurrentSite != null)
{
siteId = CMSContext.CurrentSiteID;
}
// Try to get all subscriber infos with given e-mail
DataSet ds = SubscriberProvider.GetSubscribersFromView(email, siteId);
if (!DataHelper.DataSourceIsEmpty(ds))
{
foreach (DataRow dr in ds.Tables[0].Rows)
{
Subscriber sb = new Subscriber(dr);
if ((sb != null) && ((sb.SubscriberType == null) || (sb.SubscriberRelatedID > 0) && (sb.SubscriberType == SiteObjectType.USER)))
{
// Get newsletter information
Newsletter news = NewsletterProvider.GetNewsletter(this.NewsletterName, siteId);
if (news != null)
{
// Get subscription info
SubscriberNewsletterInfo sni = SubscriberNewsletterInfoProvider.GetSubscriberNewsletterInfo(sb.SubscriberID, news.NewsletterID);
// Send e-mail to subscribed user only
if (sni != null)
{
SendUnsubscriptionRequest(sb, news, sni, CMSContext.CurrentSiteName);
requestSent = true; // At least one request was sent
}
}
}
}
}
// Unsubscription failed if none confirmation e-mail was sent
if (!requestSent)
{
// Use default error message if none is specified
if (String.IsNullOrEmpty(this.ErrorText))
{
result = GetString("unsubscribe.notsubscribed");
}
else
{
result = this.ErrorText;
}
}
}
// Display error message if set
if (!string.IsNullOrEmpty(result))
{
lblError.Text = result;
lblError.Visible = true;
}
else
{
// Display unsubscription confirmation
lblInfo.Visible = true;
if (String.IsNullOrEmpty(this.ResultText))
{
// Use default message if none was specified
lblInfo.Text = GetString("unsubscribe.confirmtext");
}
else
{
lblInfo.Text = this.ResultText;
}
lblError.Visible = false;
txtEmail.Visible = false;
btnSubmit.Visible = false;
}
}