Discord.NET 用户在玩同一个游戏

Question

我正在尝试创建一个命令，returns 当前正在玩指定游戏的公会成员的数量。

示例（! 是我的前缀）：!玩英雄联盟。

如果有5个成员在玩英雄联盟，输出：

There are 5 users currently playing League of Legends.

我设置了以下内容，从调试中我能够找到 v.Game.toString() returns 正确的字符串，但由于某种原因，if 语句没有触发。它还会捕获每当成员不玩游戏时抛出的异常（我假设它是空的？），是否有解决方法？为什么这不计算有多少会员在玩某个游戏？

[Command("playing")]
    public async Task playingGame(params string[] s)
    {
        string gameName = "";
        int count = 0;

        for (int i = 0; i < s.Length; i++)
        {
            gameName += s[i] + " ";
        }

        await Context.Channel.SendMessageAsync("Looking for: " + gameName);

        var u = Context.Guild.Users;
         foreach (var v in u)
         {
            await Context.Channel.SendMessageAsync("v = " + v.ToString());
            try
            {
                await Context.Channel.SendMessageAsync(v.Game.ToString());
                if (v.Game.ToString().ToLower().Equals(gameName.ToLower()))
                {
                    count++;
                    await Context.Channel.SendMessageAsync("Found match, count = " + count);
                }
            }
            catch (Exception x)
            {
                await Context.Channel.SendMessageAsync("Exception throw caught");
            }
         }

        if (count > 1) {
            await Context.Channel.SendMessageAsync("There are " + count + " users currently playing " + gameName + ".");
        }
        else if (count == 1)
        {
            await Context.Channel.SendMessageAsync("There is " + count + " user currently playing " + gameName + ".");
        }
        else if (count == 0)
        {
            await Context.Channel.SendMessageAsync("No one is currently playing " + gameName + ".");
        }
    }

这是例外情况：

System.ArgumentException: Argument cannot be blank
Parameter name: Content
at Discord.Preconditions.NotNullOrEmpty(String obj, String name, String msg)
at Discord.API.DiscordRestApiClient.<CreateMessageAsync>d__77.MoveNext()
--- End of stack trace from previous location where exception was thrown ---

if 语句应在何处触发的图片（用户名因隐私原因被屏蔽）：

Answer 1

游戏参数不需要params string[] s。只需使用 Remainder 属性。

我还简化了这段代码很多 :

    [Command("playing")]
    public async Task GetUsersPlaying([Remainder]string game)
    {
        await Context.Message.DeleteAsync();

        var users = Context.Guild.Users.Where(x => x.Game.ToString() == game).Distinct().Select(x => x.Username);
        var count = users.Count();

        var SeparatedList = string.Join(", ", users);

        string message;
        if (count > 1)
            message = $"There are {count} users playing {game}. [{SeparatedList}]";
        else if (count == 1)
           message = $"There is {count} user playing {game}. [{SeparatedList}]";
        else
            message = $"There is no one playing {game}.";

        await  Context.Channel.SendMessageAsync(message);
    }

Discord.NET 用户在玩同一个游戏

Discord.NET Users playing the same game

c#

discord.net