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CSharp · Console

/Program.cs

using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
	public static void Main()
	{
		Dictionary<string, string> g = new Dictionary<string, string>();
		g.Add("K", "k1");
		g.Add("L", "l1");
		var keys1 = g.Select(x => String.Format("{0}=@{0}", x.Key));
		var result1 = string.Join(",", keys1);
		Console.WriteLine(result1);
		var keys2 = g.Select(x => String.Format("{0}={1}", x.Key, x.Value));
		var result2 = string.Join(",", keys2);
		Console.WriteLine(result2);
	}
}