User Class

    public class User: People
    {
        public string UserName{ get; set; }
        public int  ID { get; set; }

        public string EmailAddress { get; set; }

        public string DateJoined { get; set; }
        public string statusMessage { get; set; }
        private static GQLInfo gql;


        public Users(Sim info)
        {

        }

       public static async Task<User> CheckUserExists(object info)
        {
                gql = new GQLInfo();
                var gqlClient = new GraphQLHttpClient(gql.GetGqlUri());
                var query = new GraphQLRequest
                {
                Query = @"
                    query userQuery($ID : Int!) {
                      user(where: {ID : $ID }) {
                            ID
                            userName
                            datejoined
                            emailAddress
                      }
                    }
                ",
                Variables = new {ID = info.user.CustID}
            };
            var graphQLResponse = await gqlClient.SendQueryAsync(query);

            var existingUser= graphQLResponse.GetDataFieldAs<User>("user");

            if (existingUser.ID == info.user.CustID)
            {
                this.statusMessage = "Udated Object";
                this.userName= existingUser.userName;
                this.ID = existingUser.CustID;
                CreateTestMessage(existingUser.userName, existingUser.CustID);
            }
            else
            {
                this.statusMessage = "Adding a new user";
            }

        public static async Task CreateTestMessage(string user, int CustID)
        {
            gql = new GQLInfo();
            var gqlClient = new GraphQLHttpClient(gql.GetGqlUri());

            var query = new GraphQLRequest
            {
                Query = @"
mutation NewTestMessage($message: String!, $dateEntered: DateTime!, $userName: String!, $userID : Int!) {
    createTestMessage(data: {message: $message, dateEntered: $dateEntered, userName: $userName, userID : $userID } ) {
                message:message
                dateEntered:dateEntered
                userName: userName
                userID : userID

            }
        }",
                Variables = new
                {
                    message = "This message was sent at exactly: " + DateTime.Now,
                    userName= user,
                    userID = CustID,
                    dateEntered = DateTime.Now
                }
            };
            var graphQlResponse = await gqlClient.SendMutationAsync(query);
            var gqlReturn = graphQlResponse.Data;
        }