Open random website from list of sites each time button clicked

Question

    private void button2_Click(object sender, EventArgs e)
    {
        Process.Start("http://google.com");
    }  

for example, then when clicked again it has a chance of opening like yahoo or even google again. tried

    private void button2_Click(object sender, EventArgs e)
    {
        Process.Start("http://google.com");
        Process.Start("http://yahoo.com");
        Process.Start("http://stackoverflow.com");
    }  

but that opens up all 3 sites at the same time in my default browser I want it to open 1 out of those 3 sites randomly each time the button is clicked.

Answer 1

Use the Random class and limit the random numbers within an interval:

Java sample as original post was not marked with language, for C# - remove final and use System.Random to select value:

private void button2_Click(object sender, EventArgs e)
{
    final String[] urls = {
      "http://google.com",
      "http://yahoo.com",
      "http://stackoverflow.com"
    };

    final int pick = (int)(Math.random() * urls.length);
    Process.Start(urls[pick]);
}  

Answer 2

You can create a string array to hold the site addresses, like so:

string[] sites = {
    "http://google.com",
    "http://yahoo.com",
    "http://stackoverflow.com" };

And then use the Random class to select one of those sites on your button click:

private void button2_Click(object sender, EventArgs e)
{
    Random random = new Random();
    Process.Start(sites[random.Next(sites.Length)]);
}

The Next method of the random class will return a value less than the specified number, so no chance of an array out of bounds exception

Answer 3

Random number generator (should be a library for it in c#.

Add in a couple variables with your links, maybe store them in an array.

Then run that line you have with the array at the index that was randomly generated.

Answer 4

Random rnd = new Random();
int website = rnd.Next(0, numOfWebsites);
switch(website)
{
    case 0:
    {
        Process.Start("http://google.com");
        break;
    }
    case 1:
    {
        Process.Start("http://yahoo.com");
        break;
    }
}

You can use a switch case statement for readability with a random number generator. I apologize if i made any errors as i don't use C# much. A if else statement would also work for a situation like this.