Problems With List of Object in C#

Questions & Answers
1

if (GUI.Button (new Rect (Screen.width * 0.2875f, Screen.height - 35, Screen.width * 0.2f, 20), “Change Class”)) {

						GameObject Listing = GameObject.Find ("Troops");
						SControler = (TroopsLists)Listing.GetComponent (typeof(TroopsLists));

						foreach (GameObject unit in (SControler.troopers)) {

								Troopcontroler = (Troopclassecontroller)unit.GetComponent (typeof(Troopclassecontroller));
								Troopcontroler.actualclass = 1;
								Troopcontroler.classdetermination ();
						}
				}

I Need to take one random object from a list and change a variable from that object and I spent almost 2 hours search to a solution and nothing.

I have this GUI buttom that when I press it will change the variable from all objects from the list, and I just need one

3

Here you are changing the variable for all the objects. You need to use “static float Range(int min, int max)”. Use this code…

  if (GUI.Button (new Rect (Screen.width * 0.2875f, Screen.height - 35, Screen.width * 0.2f, 20), "Change Class")) 
{
   
 GameObject Listing = GameObject.Find ("Troops");
    SControler = (TroopsLists)Listing.GetComponent (typeof(TroopsLists));
     
    //If trooper is array then use "trooper.Length" if that is List then use "trooper.Count" in the following line.

     int iIndex = Random.Range(0 , SControler.troopers.Length);
    Troopcontroler = (Troopclassecontroller)SControler.troopers[iIndex].GetComponent (typeof(Troopclassecontroller));
    Troopcontroler.actualclass = 1;
    Troopcontroler.classdetermination ();
    
    }
2

From a list or from the array of object you have there?
Well, in both cases it goes the same:

int index = Random.Range(0, list.Count);
list[index].GetComponent<Script>().variable = value;

or

int index = Random.Range(0, array.Length);
array[index].GetComponent<Script>().variable = value;