Cannot cast from source type to destination type C#

CSharp · Console

/Program.cs

	using System;

	public class Program
	{
		public static void Main()
		{
			var rv = new ReturnValues
			{
				Boolean = true,
				Double = 20.1,
				String = "myString"
			};

			Console.WriteLine(ReturnValueMatchedType<bool>(rv));
			Console.WriteLine(ReturnValueMatchedType<Double>(rv));
			Console.WriteLine(ReturnValueMatchedType<string>(rv));
		}

		public class ReturnValues
		{
			public bool Boolean { get; set; }
			public Double Double { get; set; }
			public string String { get; set; }
		}

		public static T ReturnValueMatchedType<T>(ReturnValues v)
		{
		  var typeCode = Type.GetTypeCode(typeof(T));

		  switch( typeCode )
		  {
			case TypeCode.Boolean:
				  return (T)(object)v.Boolean;

			case TypeCode.Double:
				  return (T)(object)v.Double;

			case TypeCode.String:
				  return (T)(object)v.String;

			default:
				return default(T);			
		  }
		}
	}