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Create SqlCommand with both sql query and connection

using System; using System.Data; using System.Data.SqlClient; class CommandScalar {    static void Main()    {       SqlConnection conn = new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;");       string sql = @"select count(*) from employee";       SqlCommand cmd = new SqlCommand(sql, conn);       Console.WriteLine("Command created and connected.");       try       {          conn.Open();          Console.WriteLine("Number of Employees is {0}", cmd.ExecuteScalar());       }       catch (SqlException ex)       {          Console.WriteLine(ex.ToString());       }       finally       {          conn.Close();          Console.WriteLine("Connection Closed.");       }    } } Command created and connected. Number of Employees is 4 Connection Closed.