针对List<Dictionary<string、string>>的IEqualityComparer的正确实施

public class DictionaryEqualityComparer : IEqualityComparer<Dictionary<string, string>>
{
    public bool Equals(Dictionary<string, string> x, Dictionary<string, string> y)
    {
        if (x == null && y == null)
            return true;
        if (x == null || y == null)
            return false;
        if (x.Count != y.Count)
            return false;

        foreach (var key in x.Keys)
        {
            if (!y.ContainsKey(key) || x[key] != y[key])
                return false;
        }

        return true;
    }

    public int GetHashCode(Dictionary<string, string> obj)
    {
        int hashCode = 0;
        foreach (var kvp in obj)
        {
            hashCode ^= kvp.Key.GetHashCode() ^ kvp.Value.GetHashCode();
        }
        return hashCode;
    }
}

List<Dictionary<string, string>> list1 = new List<Dictionary<string, string>>();
List<Dictionary<string, string>> list2 = new List<Dictionary<string, string>>();

// 添加数据到list1和list2

var comparer = new DictionaryEqualityComparer();
bool isEqual = list1.SequenceEqual(list2, comparer);