using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
public static class CollectionsExtensions
{
public static string ToStringAll(this List list)
{
StringBuilder sb = new StringBuilder();
foreach (var item in list)
{
sb.Append(item.ToString());
sb.Append(Environment.NewLine);
}
return sb.ToString();
}
}