Basic/Misc. Codes in C#

Example : How to display a message in C#.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            MessageBox.Show("Welcome You all in Your Site Codershelpline");
        }
    }
}

Example : How to close/stop a form in C#.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Exit_Click(object sender, EventArgs e)
        {
            //this.Close();  // OR   //this.Hide(); // OR  //Application.Exit();  
              
               // OR

            DialogResult result;

            result = MessageBox.Show("Do you want to exit?","Exit Confirmation", MessageBoxButtons.YesNo,
        MessageBoxIcon.Question);

            if (result == DialogResult.Yes)
              {
                 Application.Exit();
              }

        }
    }
}