Question

Why does this happen?

I am getting a string from another class to compare it to a current string, but the if statement didn’t work because there is something wrong with the string. When I tried to check the length, they differ. How is this possible?

receivedCom = “go”;

  public string checkaction(string receivedCom)
        {

            print ("-------" + receivedCom + "-------" + receivedCom.Length); //Just to show there isnt any white spaces behind or infront --> OUTPUT IS "-------go-------3"
            print (receivedCom + receivedCom.Replace(" ", "").Length); //Tried removing white spaces if there were any --> OUTPUT "go3"
            string x = receivedCom.Remove(receivedCom.Length-1); 
            print (x + " " +x.Length); --> OUTPUT IS "go 2" (Correct lenght, but if still doesnt want to work with it)

            if("go".Equals(x)){
            return "yes";
            }
            else{return "";}
        }

Either something strange is going on, or I’m losing it.

This has been done in a CS script. (Used by Unity.)

UPDATE:

Running the code provided by Jon Skeet, this is my Results

Lenght: 3
receivedCom[0] = 103
receivedCom[1] = 111
receivedCom[2] = 13

UPDATE : How i Came to get a “carriage return”

void Start () {

        player = GameObject.FindWithTag("Player");
        script = (PlayerScript) player.GetComponent(typeof(PlayerScript));

        Process p = new Process();
        p.StartInfo.FileName = @"F:\ReceiveRandomInput.exe"; //This exe generates random strings like "go" "start" etc as a console application


        p.StartInfo.Arguments = "arg0 arg1 arg2 arg3 arg4 arg5";
        p.StartInfo.RedirectStandardOutput = true;
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
        //add event handler when output is received
        p.OutputDataReceived += (object sender, DataReceivedEventArgs e) => {


        data = e.Data;  //THIS DATA is what i sent though to the other class (one with the carriage return in
        received = true;
        };

        p.Start();
        p.BeginOutputReadLine();
    }

Answer 1

How is this possible?

You’ve shown there isn’t any whitespace. That doesn’t mean there isn’t a non-printable character.

The simplest diagnostic is to just print out the “odd” Unicode value:

print((int) receivedCom[receivedCom.Length - 1]);

I’m guessing it’ll be 0, and it’s just an off-by-one error in how you’re reading the data.

EDIT: Of course to show exactly what’s in the string, just print everything:

print ("Length: " + receivedCom.Length);
for (int i = 0; i < receivedCom.Length; i++)
{
    print("receivedCom[" + i + "] = " + (int) receivedCom[i];
}

If you could edit the result of that into the question, we can make progress.