Iterate a IDictionary/Dictionary Object

Question

I have code where this is declared:

 public IDictionary<string, OPTIONS> dict_Options = new Dictionary<string, OPTIONS>();

 public class OPTIONS
 {
        public string subjectId = string.Empty;
        public string varNumber = string.Empty;
        public string varName = string.Empty;
 }

What's the easiest way to iterate over all the varNames in my dictionary object? Is there like a foreach?

Solution 1

        foreach (var item in dict_Options)
        {
            string varName = item.Value.varName;
        }

This iterates through all the KeyValuePair<T, T> in your dictionary

Solution 2

Just to add an alternative to the great answers already posted, you could do:

dict_Options.Keys.ToList().ForEach(m => SomeFunc(m.Value.varName));

Solution 3

foreach(var name in dict_Options.Select(x => x.Value.varName))
{
    SomeFunc(name);
}

Comments

[Emaborsa]

...How could m.Value return something if m is actually the Key? I would write dict_Options.Keys.ToList().ForEach(m => SomeFunc(dict_Options[m]));