如何在Discord.Net 1.0中分配角色

DiscordSocketClient client = new DiscordSocketClient();
client.LoginAsync(TokenType.Bot, "你的令牌").Wait();

client.Ready += () =>
{
    Console.WriteLine("Bot已连接到Discord服务器！");
    return Task.CompletedTask;
};

client.MessageReceived += async (message) =>
{
    if (message.Content.StartsWith("!assignrole"))
    {
        // 解析命令参数
        string[] commandArgs = message.Content.Split(' ');
        string roleName = commandArgs[1];

        // 获取服务器中的角色
        var role = message.Guild.Roles.FirstOrDefault(x => x.Name == roleName);

        // 分配角色给用户
        await (message.Author as IGuildUser).AddRoleAsync(role);
    }
};