Rock Paper Scissors C#

Start:
string choice, pcChoice;
int randomInt;
Console.WriteLine("Rock / Paper / Scissors");
choice = Console.ReadLine();
random rnd = new random();
randomInt = rnd.Next(1,4);
switch (randomInt)
{
case 1:
pcChoice = "rock";
break;
case 2:
pcChoice = "paper";
break;
case 3:
pcChoice = "scissors";
break;
default:
Console.WriteLine("invalid input, try again");
goto Start;
break;
}
if (choice == pcChoise)
{
Console.WriteLine("Draw");
}
if (choice == "rock")
{
if (pcChoise == "paper")
{
Console.WriteLine("Computer win");
}
if (pcChoise == "scissors")
{
Console.WriteLine("You win");
}
}
if (choise == "paper")
{
if (pcChoise == "rock")
{
Console.WriteLine("You win");
}
if (pcChoise == "scissors")
{
Console.WriteLine("Computer win");
}
}
if (choice == "scissors")
{
if (pcChoice == "rock")
{
Console.WriteLine("Computer win");
}
if (pcChoice == "paper")
{
Console.WriteLine("You win");
}
}