Random numbers in C#

Question

I get the error below when I try to run the application I am sure its something simple but I dont see it. What I am trying to do it when I click a button I have labeled Play. I

Answer 1

You need to pass in values:

private void btnPlay_Click(object sender, EventArgs e)
{
    RandomNumber();

}

should be:

private void btnPlay_Click(object sender, EventArgs e)
{
    RandomNumber(0, 50000);

}