I would like to convert a Dictionary to a string array (or list)
The string array needs to be returned like this: "ID, PTS" where int is ID and long is PTS.
Please help!
Thanks,
~Nikku.
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3 Answers
var strings = dict.Select(item => string.Format("{0}, {1}", item.Key, item.Value));
Note that this returns an enumerator. Whether you want the result in the form of string[] or List<string> you should use .ToArray() or .ToList(), respectively.
2 Comments
Guffa
That's neither an array nor a list. You need either
.ToList() or .ToArray() to realise it as a collection, now it's just an enumerator that can read from the dictionary.
Marlon
@Guffa Yep, that is true. I left it out on purpose but I suppose according to the question it should be brought to the OPs attention.
You can do it like this:
string[] arr =
theDictionary
.Select(kvp => kvp.Key.ToString() + ", " + kvp.Value.ToString())
.ToArray();
Comments
The simple answer is to iterate over the dictionary, and copy the values into a string list.
Dictionary<int, long> dict = new Dictionary<int, long>();
// If you like Linq. Stick a .ToArray() or .ToList() at the end, or leave it as IEnumerable<string>
var stringList = dict.Select(kvp => kvp.Key.ToString() + ", " + kvp.Value.ToString());
// If you don't like Linq.
List<string> stringList2 = new List<string>();
foreach (KeyValuePair<int, long> kvp in dict)
{
stringList2.Add(kvp.Key.ToString() + ", " + kvp.Value.ToString());
}
