public static void Run()
{
// ExStart:DeleteMembersFromPrivateDistributionList
IEWSClient client = EWSClient.GetEWSClient("https://outlook.office365.com/ews/exchange.asmx", "testUser", "pwd", "domain");
ExchangeDistributionList[] distributionLists = client.ListDistributionLists();
MailAddressCollection members = client.FetchDistributionList(distributionLists[0]);
MailAddressCollection membersToDelete = new MailAddressCollection();
membersToDelete.Add(members[0]);
membersToDelete.Add(members[1]);
client.DeleteFromDistributionList(distributionLists[0], membersToDelete);
// ExEnd:DeleteMembersFromPrivateDistributionList
}