find the symmetric difference of two maps in csharp

main.cs
Dictionary<int, string> map1 = new Dictionary<int, string>();
map1.Add(1, "one");
map1.Add(2, "two");
map1.Add(3, "three");

Dictionary<int, string> map2 = new Dictionary<int, string>();
map2.Add(3, "three");
map2.Add(4, "four");
map2.Add(5, "five");

// Get the keys for both maps
var keys1 = map1.Keys;
var keys2 = map2.Keys;

// Create two sets from the keys
var set1 = new HashSet<int>(keys1);
var set2 = new HashSet<int>(keys2);

// Find the symmetric difference
var symmetricDiff = new HashSet<int>(set1.symmetricExceptWith(set2));

// Output the result
foreach (var key in symmetricDiff)
{
    string value;
    if (map1.TryGetValue(key, out value))
    {
        Console.WriteLine($"Key = {key}, Value1 = {value}");
    }
    else if (map2.TryGetValue(key, out value))
    {
        Console.WriteLine($"Key = {key}, Value2 = {value}");
    }
}
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