Comment puis-je obtenir efficacement un nombre de lignes à partir d'une requête SQL à l'aide de C# ?

using System.Data;
using System.Data.SqlClient;

namespace SqlCountExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // Define the connection string
            string connectionString = "Server=localhost;Database=myDatabase;User ID=myUsername;Password=myPassword;";

            // Create a new SqlConnection object
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                // Create a new SqlCommand object
                SqlCommand cmd = connection.CreateCommand();

                // Set the CommandText property to the SQL query
                cmd.CommandText = "SELECT COUNT(*) FROM table_name";

                // Open the connection
                connection.Open();

                // Execute the query and cast the result to int
                Int32 count = (Int32)cmd.ExecuteScalar();

                // Close the connection
                connection.Close();

                // Display the count
                Console.WriteLine("The count of rows in table_name is: {0}", count);
            }
        }
    }
}