C# execute update, delete, insert statements c# - Net-Raft.com

using System;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
string connetionString = null;
SqlConnection connection ;
SqlCommand command ;
string sql = null;

connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password";
sql = "put your sql statment here"; // UPDATE, DELETE, INSERT

connection = new SqlConnection(connetionString);
try
{
connection.Open();
command = new SqlCommand(sql, connection);
command.ExecuteNonQuery();
command.Dispose();
connection.Close();
MessageBox.Show ("Your sql command is executed!");
}
catch (Exception ex)
{
MessageBox.Show("The connection is refused!");
}
}
}
}