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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            using var tConn = new SqlConnection("ConnectionString");

            using var tCommand = tConn.CreateCommand();
            tCommand.CommandText = "UPDATE players SET name = @name, score = @score, active = @active WHERE jerseyNum = @jerseyNum";

            tCommand.Parameters.Add(new SqlParameter("@name", System.Data.SqlDbType.VarChar).Value = "Smith, Steve");
            tCommand.Parameters.Add(new SqlParameter("@score", System.Data.SqlDbType.Int).Value = "42");
            tCommand.Parameters.Add(new SqlParameter("@active", System.Data.SqlDbType.Bit).Value = true);
            tCommand.Parameters.Add(new SqlParameter("@jerseyNum", System.Data.SqlDbType.Int).Value = "99");

            tCommand.ExecuteNonQuery();
        }
    }
}