CODEWITHSUNDEEP
c#stringrandomgenerator
Franz
Franz

Reputation: 5

Random string generator C#

I have made a simple number generator, and I have a question: is it possible for the generator to eject "red", "blue", "green", " yellow" and "white" instead of the numbers 1-5?

namespace zufallsgenerator
{
    public partial class Form1 : Form
    {
        Random r = new Random();

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void btnWhlie_Click(object sender, EventArgs e)
        {
            int summe = 0, z; 

            lblAnzeige.Text = " ";

           while (summe <= 0)
           {
                z = r.Next(1, 6);
                summe = summe + z;
           }
           lblAnzeige.Text += summe + "\n";               
        }
    }
}

Upvotes: 0

Views: 468

Answers (6)

PMF
PMF

Reputation: 17185

You could use an enum.

Define something like

enum Color
{
   Red,
   Green,
   Blue
}

Then you can cast your int to this:

Color color = (Color)r.Next(1, 6)

And, if you wish

Text = color.ToString();

Upvotes: 3

JaCraig
JaCraig

Reputation: 1078

Taking Xi Huan's answer, you can make it a bit prettier using an extension method:

public static T Next<T>(this System.Random Random, params T[] List)
{
    if(List.Length==0)
        return default(T);
    return List[Random.Next(0, List.Length)];
}

Then calling it is just:

var r=new System.Random();
var randon_color = r.Next("red", "blue", "green", "yellow", "white");

Upvotes: 1

sloth
sloth

Reputation: 101032

You could create a simple array and access it with a randomly generated index, e.g.:

var r = new Random();
string[] colors = {"red", "blue", "green", "yellow", "white"};
var random_color = colors[r.Next(colors.Length)];

Upvotes: 11

Krzysiek Bronek
Krzysiek Bronek

Reputation: 146

If you get output like 1-5 you could create string[] containing 5 elements

string[] colors = new string[] { "red", "blue", "green", " yellow", "white" }

And instead of retrieving r.Next( 1, 6 ) you could retrieve colors[ r.Next( 0, 5 ) ] (because string array is 0-indexed, changed the min and max value).

Upvotes: 2

MC ND
MC ND

Reputation: 70923

Define an array with the posible desired output values and instead of concatenating summe to text, add YourArrayOfNamedValues[summe]

Upvotes: 0

Ryan Schlueter
Ryan Schlueter

Reputation: 2221

What I would do is create a list of strings. Then put the random number as i. So like List<string> list1 = new List<string>{"red", "blue", "green"}; then use your random number like this to call a random element of it. list1[randomNumber];

Upvotes: 0

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