Comparing two dictionaries in C# with string, Dictionary>

Question

I have two dictionaries and I want to compare it against each other and they are of type Dictionary>

I tried using a foreach loop but it won't work exactly as desired.What's the best way to go about it?

foreach (KeyValuePair<string, Dictionary<string, object>> entry1 in dict1)
{
    foreach (KeyValuePair<string, Dictionary<string, object>> entry2 in dict2)
    {
        if (entry1.key = entry2.key)
        {
            if (entry1.Value["Number"]==entry2.Value["Number"])
            {
                Console.WriteLine("Comparison successful")
            }
        }
    }
}

Are you trying to find out if two dictionaries contains the same values? — Kinetic, Sep 02 '16 at 01:32
Yes..I want to know whether two dicitionaries contains same keys and then same values — Shan, Sep 02 '16 at 01:32
e.g key1=key2 might be equal but I want to check key1["number1"]=key2["number1"] — Shan, Sep 02 '16 at 01:33
"is there any easier way" --- easier than *what*? You don't have anything that works :-S — zerkms, Sep 02 '16 at 01:33
Possible duplicate of [C# Compare two dictionaries for equality](http://stackoverflow.com/questions/21758074/c-sharp-compare-two-dictionaries-for-equality) — Kinetic, Sep 02 '16 at 01:34
@Shan: what are your errors? You need to provide some details for us to be able to help you. — siride, Sep 02 '16 at 03:59

score 1 · Answer 1 · answered Sep 02 '16 at 01:44

1

public static Boolean CompareDictionary(Dictionary<string, object> D1, Dictionary<string, object> D2)
{
    if (D1 == null && D2 == null) return true;
    else if (D1 == null || D2 == null) return false;

    if (D1.Count != D2.Count) return false;    
    if (D1.Keys.Except(D2.Keys).Any()) return false;
    if (D2.Keys.Except(D1.Keys).Any()) return false;

    foreach (string Key in D1.Keys)
    {
        if (!D2.ContainsKey(Key)) return false;
        if (D1[Key] != D2[Key]) return false;
    }
    return true;
}

answered Sep 02 '16 at 01:44

Zay Lau

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This is also not working for me..as I need to compare the values of the one key from one dictionary against another key from another dictionary – Shan Sep 02 '16 at 02:45
@Shan: that's what the second `if` does inside the `foreach` loop. – siride Sep 02 '16 at 03:55

score 0 · Answer 2 · answered Sep 02 '16 at 04:37

Here it is:

private static bool Check2DictionariesAreEqual(Dictionary<string, object> entry1, Dictionary<string, object> entry2)
{
    if(entry1 == null && entry2 == null)
    {
        return true;
    }
    else if(entry1 == null || entry2 == null)
    {
        return false;
    }

    if(entry1.Count != entry2.Count)
    {
        return false;
    }

    bool result = true;

    foreach (string key in entry1.Keys)
    {
        // Check Key
        result &= entry2.ContainsKey(key);

        if (!result) // Quick Break
        {
            break;
        }

        // Check Value
        result &= entry2[key] == entry1[key];

        if(!result) // Quick Break
        {
            break;
        }
    }

    return result;
}

Comparing two dictionaries in C# with string, Dictionary>

2 Answers2