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c#arraysfor-loopdictionary
Johnathan
Johnathan

Reputation: 1907

I am trying to create multiple arrays/dictionaries in C# using a for loop

I am trying to create multiple arrays/dictionaries in C# using a for loop. I can declare them individually, but it's not clean.

Here is my code:

string[] names = ["dSSB", "dGEN", "dLYM", "dLUD", "dGGC", "dMAC", "dMMB"];

for (int i = 0; i <= names.Length; i++)
{
    string building = names[i];
    Dictionary<long, int> building = new Dictionary<long, int>();
}

I am trying to use the names stored in the names array to iteratively create arrays. Visual Studio doesn't accept "building" as it is already declared. Any suggestion would be greatly appreciated. Thank you!

Upvotes: 0

Views: 824

Answers (3)

David Osborne
David Osborne

Reputation: 27

If you're simply trying to make a dictionary, and put stuff in it:

        Dictionary<int, string> buildings = new Dictionary<int, string>();

        string[] names = { "dSSB", "dGEN", "dLYM", "dLUD", "dGGC", "dMAC", "dMMB" };
        for (int i = 0; i < names.Length; i++)
        {
            buildings.Add(i, names[i]);
        }

        foreach (KeyValuePair<int, string> building in buildings)
        {
            Console.WriteLine(building);
        }

Upvotes: 1

n_ananiev
n_ananiev

Reputation: 309

You can try it like this

        string[] names = {"dSSB", "dGEN", "dLYM", "dLUD", "dGGC", "dMAC", "dMMB"};
        Dictionary<string, Dictionary<long, int>> buildings = new Dictionary<string, Dictionary<long, int>>();
        for (int i = 0; i <= names.Length -1; i++) 
        {
            buildings[names[i]] = new Dictionary<long, int>();
            buildings[names[i]].Add(5L, 55);
        }

        //Here you can get the needed dictionary from the 'parent' dictionary by key
        var neededDictionary = buildings["dSSB"];

Cheers

Upvotes: 1

D Stanley
D Stanley

Reputation: 152566

There's not a way in C# to create dynamically-named local variables.

Perhaps you want a dictionary of dictionaries?

string[] names = ["dSSB", "dGEN", "dLYM", "dLUD", "dGGC", "dMAC", "dMMB"];
var buildings = new Dictionary<string,Dictionary<long, int>>();

for (int i = 0; i <= names.Length; i++) {
      buildings[names[i]] = new Dictionary<long, int>();
}

//... meanwhile, at the Hall of Justice ...

// reference the dictionary by key string
buildings["dSSB"][1234L] = 5678;

Upvotes: 5

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