using System.Data.SqlClient;

​

// Define the connection string

string connectionString = "Data Source=MyServer;Initial Catalog=MyDatabase;Integrated Security=True";

​

// Define the UPDATE statement with parameters

string query = "UPDATE MyTable SET Column1=@Value1, Column2=@Value2 WHERE ID=@ID";

​

// Create a new SqlConnection using the connection string

using (SqlConnection connection = new SqlConnection(connectionString))

{

    // Open the connection

    connection.Open();

    // Create a new SqlCommand using the query and the SqlConnection

    using (SqlCommand command = new SqlCommand(query, connection))

    {

        // Add parameters to the SqlCommand

        command.Parameters.AddWithValue("@Value1", "New Value 1");

        command.Parameters.AddWithValue("@Value2", "New Value 2");

        command.Parameters.AddWithValue("@ID", 1);

        // Execute the UPDATE statement

        int rowsAffected = command.ExecuteNonQuery();

        // Output the number of rows affected

        Console.WriteLine($"{rowsAffected} rows affected.");

    }

}

​