C#(Sharp) Code

Example : How to display message in C#.

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show ("Welcome You all in Your Site Codershelpline");
        }
    }
}

Example : How to close form in C#.

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

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();     //this.Hide();
        }
    }
}