public void ManageLists(XrmServiceContext context, Contact contact)
{
foreach (RepeaterItem item in MarketingList.Items)
{
if (item != null)
{
RepeaterItem repeaterItem = item;
var ml = context.ListSet.First(m => m.ListId == new Guid(((HiddenField)(repeaterItem.FindControl("ListID"))).Value));
var listCheckBox = (CheckBox)item.FindControl("ListCheckbox");
var contactLists = contact.listcontact_association.ToList();
var inList = contactLists.Any(list => list.ListId == ml.ListId);
if (listCheckBox.Checked && !inList)
{
context.AddMemberList(ml.ListId.Value, contact.ContactId.Value);
}
else if (!listCheckBox.Checked && inList)
{
context.RemoveMemberList(ml.ListId.Value, contact.ContactId.Value);
}
}
}
}