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Question by Ochreous · Jan 24, 2013 at 07:48 PM · c#arraystringincrement

C# Incrementing a String Array

Hi everyone, is there a way to increment a string array? Every time the MoveUpOne button is pressed I want someString to increment to the next element of the string Array.Can that be done?

 public String someString;
 public String[] someArray;
 
 void Start(){
 someString = someArray[0];
 someArray = new string[]{"text","text2","text3"};
 }
 void OnGUI(){
 if (GUILayout.Button("MoveUpOne", GUILayout.Width(50), GUILayout.Height(25))){
 //Make someString increment from someArray[0] to someArray[1] and so on
   }
 }
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avatar image asafsitner · Jan 24, 2013 at 07:54 PM 0
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What do you mean 'increment'? Just assigning a new value to someString like
someString = someArray[Array.IndexOf(someArray, someString) + 1]?

If so, you could just keep an extra index variable at class level and increment that instead of using IndexOf

avatar image Ochreous · Jan 24, 2013 at 08:07 PM 0
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I tried that but I keep getting this error. Array doesn't exist in current context

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Answer by Dave-Carlile · Jan 24, 2013 at 07:53 PM

Keep a separate variable that stores the current index into someArray. Increment that variable, then set someString to the array value at that index.

 int someStringIndex;

 void OnGUI()
 {
   if (GUILayout.Button("MoveUpOne", GUILayout.Width(50), GUILayout.Height(25)))
   {
     someStringIndex++;
     someString = someArray[someStringIndex];
   }
 }

You will need to make sure someStringIndex doesn't go beyond the end of the array.

Comment
Graham-Dunnett

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