CsvPrinter

gistfile1.cs

class Program
{
    static void Main(string[] args)
    {
        var values = new List<Sample>();
        for (var i = 0; i < 10; i++)
        {
            values.Add(new Sample
                            {
                                Prop1 = Guid.NewGuid().ToString(),
                                Prop2 = Guid.NewGuid().ToString() 
                            });
        }


        Print(typeof(Sample).GetProperties(BindingFlags.Instance | BindingFlags.Public), values);
        Console.ReadLine();
    }

    public class Sample
    {
        public string Prop1 { get; set; }
        public string Prop2 { get; set; }
    }

    public static void Print(IEnumerable<PropertyInfo> properties, IEnumerable<object> instances)
    {
        var output = new StringBuilder();
        var cachedProps = properties.ToArray(); // need indexing here

        instances
            .Each(x =>
                        {
                            var headersWritten = output.Length != 0;
                            if (!headersWritten)
                            {
                                for (var i = 0; i < cachedProps.Length; i++)
                                {
                                    output.Append(cachedProps[i].Name);
                                    if(i != (cachedProps.Length - 1))
                                    {
                                        output.Append(", ");
                                    }
                                }

                                output.AppendLine();
                            }

                            for(var i = 0; i < cachedProps.Length; i++)
                            {
                                output.Append(cachedProps[i].GetValue(x, null));
                                if (i != (cachedProps.Length - 1))
                                {
                                    output.Append(", ");
                                }
                            }

                            output.AppendLine();
                        });

        Console.WriteLine(output.ToString());
    }
}