public static void CallSaveMessages(int clientId, LinkedDictionary <DateTime, string> messages)
{
var data = new List <MessageData>(messages.ConvertAll <KeyValuePair <DateTime, string>, MessageData>(i => new MessageData {
Date = i.Key, Message = i.Value
}));
using (var client = new DataServiceClient())
client.SaveMessages(data.ToArray(), clientId);
}