Random numbers in C#
<p>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 want to call a method called randomnumber. Then I want the results to be displayed in lblPickFive_1. 
I have 2x2,Pick5,and powerball. Each random number is to be displayed in its own label I created.</p>

<p>For now I am just looking to get past the one of generating a random number and having it displayed in the one label then I will move onto the rest. And I am sure post more questions if I cant figure out the rest.</p>

<p>Error   1   No overload for method 'RandomNumber' takes '0' arguments      </p>

<pre><code>using System;
using System.Windows.Forms;

namespace LotteryTickets
{
public partial class Form1 : Form
{
    /// &lt;summary&gt;
    /// no-args Constructor
    /// &lt;/summary&gt;
    public Form1()
    {
        InitializeComponent();

    }


    #region "== Control Event Handlers =="
    private void Form1_Load(object sender, EventArgs e)
    {
        ClearWinningNumbers();
    }


    #endregion "== End Control Event Handlers =="


    #region "== Methods ==";
    /// &lt;summary&gt;
    /// Clears the text inside the winning number "balls"
    /// &lt;/summary&gt;
    private void ClearWinningNumbers()
    {
        this.lblPickFive_1.Text = "";
        this.lblPickFive_2.Text = "";
        this.lblPickFive_3.Text = "";
        this.lblPickFive_4.Text = "";
        this.lblPickFive_5.Text = "";

        this.lblTwoByTwo_1.Text = "";
        this.lblTwoByTwo_2.Text = "";

        this.lblPowerball_1.Text = "";
        this.lblPowerball_2.Text = "";
        this.lblPowerball_3.Text = "";
        this.lblPowerball_4.Text = "";
        this.lblPowerball_5.Text = "";

        this.lblPowerball_PB.Text = "";
    }
    #endregion "== End Methods ==";

    private void cblTwoByTwo_2_SelectedIndexChanged(object sender, EventArgs e)
    {

    }

    private void cblTwoByTwo_1_SelectedIndexChanged(object sender, EventArgs e)
    {

    }

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

    }

    private void lblPickFive_1_Click(object sender, EventArgs e)
    {

    }
    private void RandomNumber(int min, int max)
    {
        int num = new Random().Next(min, max);
        lblPickFive_1.Text = num.ToString();
    }
    }
}
</code></pre>
