SimpleJsonResult.cs

using System.Web.Mvc;

/*
 * return new SimpleResult("Hello World");
 * return new SimpleResult(1);
 * return new SimpleResult(1257.14);
 * return new SimpleResult(true);
 */
namespace Custom.Mvc
{
	public class SimpleJsonResult : ActionResult
	{
		private JsonResult result = new JsonResult();

		public SimpleJsonResult(object content)
		{
			result.ContentType = "text/javascript";
			result.Data = content;
		}

		public override void ExecuteResult(ControllerContext context)
		{
			result.ExecuteResult(context);
		}
	}
}

SimpleResult.cs

using System.Web.Mvc;

/*
 * return new SimpleJsonResult(new { success = true });
 */
namespace Custom.Mvc
{
	public class SimpleResult : ActionResult
	{
		private ContentResult result = new ContentResult();

		public SimpleResult(string content)
		{
			result.Content = content;
		}

		public SimpleResult(int content)
		{
			result.Content = content.ToString();
		}

		public SimpleResult(double content)
		{
			result.Content = content.ToString();
		}

		public SimpleResult(bool content)
		{
			result.Content = content ? "true" : "false";
		}

		public override void ExecuteResult(ControllerContext context)
		{
			result.ExecuteResult(context);
		}
	}
}