如何将字符串转换为ushort

Question

I have researched all of the questions that match my query and tried their solutions however none appear to work for me so I am asking how I convert a string to a ushort I have this set up all ready

public static string vid
{
    get { return "<vehicleid>"; }
}

I've tried to use this : short[] result = vid.Select(c => (ushort)c).ToArray(); but when I go to put the vid ushort into this bit

[RocketCommand("vehicle", "This command spawns you a vehicle!", "<vehicleid>", AllowedCaller.Player)]
public void ExecuteCommandVehicle(IRocketPlayer caller, string[] command)
{
    UnturnedPlayer spawner = (UnturnedPlayer)caller;
    spawner.GiveVehicle(vid);
}

I get the following error :

Severity Code Description Project File Line Suppression State Error CS1503 Argument 1: cannot convert from 'string' to 'ushort' arena v by FridgeBlaster C:\\Users\\Jonathan\\Documents\\Visual Studio 2015\\Projects\\arena v by FridgeBlaster\\arena v by FridgeBlaster\\vehicle.cs 71 Active

Answer 1

What you're looking for is ushort.TryParse or ushort.Parse methods.
I would suggest using this piece of code :

ushort[] result = vid.Where(i => ushort.TryParse(i, out short s)).Select(ushort.Parse);

Or if you do not use latest C# version :

ushort[] result = vid.Where(i => { ushort r = 0; return ushort.TryParse(i, out r); }).Select(ushort.Parse);

---

Okay so the problem ( as what your error says ) is that your GiveVehicle method accepts ushort as an argument and you're putting string type in it. Try doing something like this :

ushort val = 0;
if(ushort.TryParse(vid, out val))
{
    UnturnedPlayer spawner = (UnturnedPlayer)caller;
    spawner.GiveVehicle(val);
}

---

Based on this source which is responsible for calling method marked with RocketCommand attribute. Your <"vehicleid"> is/should be stored in a command array on first place. So to get this out and convert use something like this :

if(command.Length > 0)
{
    ushort val = 0;
    if(!string.IsNullOrWhiteSpace(command[0]) && ushort.TryParse(command[0], out val))
    {
        UnturnedPlayer spawner = (UnturnedPlayer)caller;
        spawner.GiveVehicle(val);
    }
}

Answer 2

对于简单的字符串到ushort的转换： UInt16.Parse(string)

Answer 3

Either you want to convert the string to a short:

Int16.Parse(...)

or

Int16.TryParse(...)

or you want to convert char to short by first converting string to array of chars:

vid.ToCharArray[..]

Answer 4

Based on the line short[] result = vid.Select(c => (ushort)c).ToArray(); it looks like there might be multiple IDs in a single string (each character, I assume).

If that's the case, try something like this:

ushort[] result = vid.ToCharArray().Select(c => (ushort) c).ToArray();

If you've got several actual numbers in the string separated by a character (eg "13,15,18"), give this a shot:

ushort[] result = vid.Split(separator).Select(str => ushort.Parse(str)).ToArray();

For either of these options, make sure you include using directives for the System and System.Linq namespaces.

---

With discussion on this and other answers, it looks like command is the result of tokenizing "/vehicle <id>" . In this case, the body of the ExecuteCommandVehicle(IRocketPlayer, string[]) method should be similar to this:

ushort result = 0;
if (ushort.TryParse(command[1], out result)) {
  UnturnedPlayer spawner = caller as UnturnedPlayer;
  caller?.GiveVehicle(result);
}