Adding Multiple Members to a List

Add multiple users to a list at the same time.

Signature:

public async Task<List> AddMemberRangeToListAsync(
    ulong listID, string slug, ulong ownerID, 
    string ownerScreenName, List<string> screenNames)
public async Task<List> AddMemberRangeToListAsync(
    ulong listID, string slug, ulong ownerID, 
    string ownerScreenName, List<ulong> userIDs)

Parameters/Filters:

Name	Purpose	Type	Required
listID	ID of list	ulong	only is slug is empty
ownerID	ID of user who owns list	ulong	only if slug is provided
ownerScreenName	Name of user to who owns list	string	only if slug is provided
screenNames	Screen names to add	List	only if userID is empty
slug	Short list name	string	only if listID is empty
userIDs	User IDs to add	List	only if screenName is empty

Note: Either userIDs or screenNames is required. Either listID or slug is required. If you use slug, you must also specify either ownerID or ownerScreenName. Maximum users per request is 100; requiring multiple invocations if you need to add more than 100 users.

Return Type: List

v3.0 Example:

            string ownerScreenName = "Linq2Tweeter";
            var screenNames = new List<string>
            {
                "JoeMayo",
                "Linq2Tweeter"
            };

            List list = 
                await twitterCtx.AddMemberRangeToListAsync(
                    0, "testDemo", 0, ownerScreenName, screenNames);

            if (list != null && list.Users != null)
                list.Users.ForEach(user => Console.WriteLine(user.Name));

v2.1 Example:

var screenNames = new List<string>
{
    "JoeMayo",
    "Linq2Tweeter"
};

List list = twitterCtx.AddMemberRangeToList(null, "linq", null, "Linq2Tweeter",
                                            screenNames);

foreach (var user in list.Users)
{
      Console.WriteLine(user.Name);
}

Twitter API: lists/members/create_all