Basic Connectivity C# with Sql Server

Basic Connectivity C# with Sql Server 

private static void CreateConnection(string queryString,string connectionString)
{
    using (SqlConnection connection = new SqlConnection(
               connectionString))
    {
        SqlCommand command = new SqlCommand(queryString, connection);
        command.Connection.Open();
        command.ExecuteNonQuery();
    }
}

sample connection string for C#

"Persist Security Info=False;Integrated Security=true;Initial Catalog=Northwind;

server=(local)"