GUI Windows Forms C# Tutorial

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
public class MainClass{
    public static void Main() {
        System.Windows.Forms.ColorDialog colorDlg = new System.Windows.Forms.ColorDialog();
        Color currColor;
                
        colorDlg.AnyColor = true;
        colorDlg.ShowHelp = true;
        currColor = Color.BlueViolet;
 
        if (colorDlg.ShowDialog() != DialogResult.Cancel)  {
             currColor = colorDlg.Color;
            // Show current color.
             string strARGB = colorDlg.Color.ToString();
             MessageBox.Show(strARGB, "Color is:");
        }
    }
}