using System;

using static System.Console;

using System.Collections.Generic;

​

public class Program {

    public static void Main() {

        var dict = new Dictionary<Class1, int> { { new Class1 { Id = new Guid(), Name = "João" }, 0 }};

        foreach (var item in dict) WriteLine(item.Key.Name);

    }

}

​

public class Class1 : IEquatable<Class1> {

    public Guid Id { get; set; }

    public string Name { get; set; }

​

    public bool Equals(Class1 other) {

        if (ReferenceEquals(null, other)) return false;

        if (ReferenceEquals(this, other)) return true;

        return Id.Equals(other.Id) && string.Equals(Name, other.Name);

    }

​

    public override bool Equals(object obj) {

        if (ReferenceEquals(null, obj)) return false;

        if (ReferenceEquals(this, obj)) return true;

        if (obj.GetType() != this.GetType()) return false;

        return Equals((Class1) obj);

    }

​

    public override int GetHashCode() {

        unchecked {

            int hash = (int) 2166136261;

            hash = (hash * 16777619) ^ Id.GetHashCode();

            return hash = (hash * 16777619) ^ (Name != null ? Name.GetHashCode() : 0);

        }

    }

​

    public static bool operator ==(Class1 left, Class1 right) => Equals(left, right);

​

    public static bool operator !=(Class1 left, Class1 right) => !Equals(left, right);

}