using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		var pattern = @"(\s+[~-]\s+)";
		var text = "{ Items.Test1 } ~ { Items.test2 } - { Items.Test3 }";
		var result = Regex.Split(text, pattern);
    	//var result = Regex.Split(text, pattern).Where(x => !String.IsNullOrWhiteSpace(x)).ToList();
        foreach (var s in result)
        	Console.WriteLine(s);
	}
}