how to fix operator '==' is ambiguous on operands of type ulong and long

Question

I\'m currently building a new command in my Discord Server and i\'m struggling to convert the UserId back to the Users Nickname in my server.

i am getting error message

Answer 1

In the .Where(x => x.Id = memberId), you should use == to compare instead of = (attribution) like you did before.

Int64 memberId = reader.GetInt64(0);
string name = Context.Guild.Users
    .Where(x => x.Id == memberId)
    .First()
    .Nickname != null 
        ? Context.Guild.Users.Where(x => x.Id == memberId).First().Nickname 
        : Context.Guild.Users.Where(x => x.Id == memberId).First().Username;
Int64 votes = reader.GetInt64(2);
GOTWVote.Add($@"{name} has received {votes} vote(s)");

But you could refactor this code to this (read to comments):

var memberId = reader.GetInt64(0);
// search for the user just a single time!
var user = Context.Guild.Users.First(x => x.Id == memberId);

// apply the rule to define the name string
string name = @string.IsNullOrEmpty(user.Nickname) ? user.Nickname : user.Username;

var votes = reader.GetInt64(2);
GOTWVote.Add($@"{name} has received {votes} vote(s)");