I have a code that allows you to loop through the ID's. In this case it is using TwitterFriendShip Class, but It should be the same using the other tweet classes:
friendCol = TwitterFriendship.FriendsIds(tokens, options);
Cursor = friendCol.ResponseObject.NextCursor;
foreach (int usuario in friendCol.ResponseObject)
{
usuarios newUser = new usuarios();
newUser.userId = usuario;
FollowingList.Add(newUser);
}
for (int i = 0; i < FollowingList.Count -1; i++)
{
//Delete by userID
TwitterResponse<TwitterUser> ans= TwitterFriendship.Delete(tokens, FollowingList[i].userId);
}
Try this, to get the tweets in timeline and delete them using the id;
EDIT:
TwitterStatusCollection staCol = TwitterTimeline.UserTimeline(tokens).ResponseObject;
foreach (TwitterStatus status in staCol)
{
status.Delete(tokens);
}
NOTE: The TwitterStatus Class has ID and StringID properties