How to get null instead of the KeyNotFoundException accessing Dictionary value by key? [duplicate]

Answer 1

Add a DictionaryExtension class

public static class DictionaryExtension
{
    public static TValue GetValueOrDefault<TKey, TValue>
        (   this IDictionary<TKey, TValue> dictionary,TKey key)
    {
        TValue value;
        return dictionary.TryGetValue(key, out value) ? value : default(TValue);
    }
}

And it can return Default value if not found key in dictionary.

The Default is null if this is reference type .

_dic.GetValueOrDefault();