public void ManageLists(OrganizationServiceContext context, Entity contact)
{
foreach (var item in MarketingListsListView.Items)
{
if (item == null)
{
continue;
}
var listViewItem = item;
var hiddenListId = (HiddenField)listViewItem.FindControl("ListID");
if (hiddenListId == null)
{
continue;
}
var listId = new Guid(hiddenListId.Value);
var ml = context.RetrieveSingle("list",
FetchAttribute.All,
new Condition("listid", ConditionOperator.Equal, listId));
var listCheckBox = (CheckBox)item.FindControl("ListCheckbox");
if (listCheckBox == null)
{
continue;
}
var contactLists = contact.GetRelatedEntities(XrmContext, new Relationship("listcontact_association")).ToList();
var inList = contactLists.Any(list => list.GetAttributeValue <Guid>("listid") == ml.Id);
if (listCheckBox.Checked && !inList)
{
context.AddMemberList(ml.GetAttributeValue <Guid>("listid"), contact.GetAttributeValue <Guid>("contactid"));
}
else if (!listCheckBox.Checked && inList)
{
context.RemoveMemberList(ml.GetAttributeValue <Guid>("listid"), contact.GetAttributeValue <Guid>("contactid"));
}
}
}