How to make an inventory Paging on Unity C#?

Question

How to make an inventory with 3 Storage. For example :

if i push storage 1 button it will show 20 Slots at inventory,

if i push storage 2 button it will show from 21 Slots until 40 Slots at inventory, and

if i push storage 3 button it will show from 41 Slots until 60 Slots at inventory.

so it have all 60 slots total.

Below its my code :

inventory.cs

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.UI;

 public class inventory : MonoBehaviour {
     public List<GameObject> slotsx = new List<GameObject> ();
     public player Player;
     public List<item> itemx = new List<item> ();
     public GameObject slots;
     item itemxs;
     public int indexofdragitem;
     public Sprite icon;

     int sisa;
     itemDatabase database;
     int totalSlot = 60;
     int currentStorage = 1;
     int view = 20;

     // Use this for initialization
     void Start () {
         Player = new player();
         int slotAmount = 0;
         database = GameObject.FindGameObjectWithTag ("itemDatabase").GetComponent<itemDatabase> ();


         //Generate the Slot and Slot Name;
         for(int i = 1; i <= 60; i++) {
                 GameObject Slot = (GameObject) Instantiate(slots);
                 Slot.GetComponent<slotScript>().slotNumber = slotAmount;

                 slotsx.Add(Slot);

                 Player.items.Add(new item());
                 addChilParent (this.gameObject,Slot);
                 //Slot.transform.parent = this.gameObject.transform;
                 Slot.name = "slot-" + i;
                 Slot.SetActive(false);
                 slotAmount++;

         }
      ShowStorage1();

     }

     //Add Slot Child To GridSlot Game Object
     public void addChilParent(GameObject parentx, GameObject childx) {
         childx.transform.SetParent (parentx.gameObject.transform);
     }
  }

Thanks

Update code :

public void onClickStorage1() {
        HideAllSlot ();
        ShowStorage1 ();
    }

    public void onClickStorage2() {
        HideAllSlot ();
        ShowStorage2 ();
    }

    public void onClickStorage3() {
        HideAllSlot ();
        ShowStorage3 ();
    }

    public void HideAllSlot () {
        GameObject hslot;
        for(int i = 1; i <= 60; i++) {
            hslot = GameObject.Find("slot-"+i);
            hslot.SetActive(false);
        }
    }

    public void ShowStorage1 () {
        GameObject hslot;
        for(int i = 1; i <= 20; i++) {
            hslot = GameObject.Find("slot-"+i).SetActive(true);
            hslot.SetActive(true);
        }
    }

    public void ShowStorage2 () {
        GameObject hslot;
        for(int i = 21; i <= 40; i++) {
            hslot = GameObject.Find("slot-"+i);
            hslot.SetActive(true);
        }
    }

    public void ShowStorage3 () {
        GameObject hslot;
        for(int i = 41; i <= 60; i++) {
            hslot = GameObject.Find("slot-"+i);
            hslot.SetActive(true);
        }
    }

Answer 1

"if i push storage 1 button it will show 20 Slots at inventory, if i push storage 2 button it will show from 21 Slots until 40 Slots at inventory, and if i push storage 3 button it will show from 41 Slots until 60 Slots at inventory."

1, click add canvas

2, click to add Button .. in fact add three

3, under Button there is the "text" of the button. Label the three buttons "Storage 1", "Storage 2", "Storage 3"

4, Have a script something like this...

public GameObject yourFIRSTPanel;
public GameObject yourSECONDPanel;
public GameObject yourTHIRDPanel;

private void HideAllThreePanels()
 {
 yourFIRSTPanel.setActive(false);
 yourSECONDPanel.setActive(false);
 yourTHIRDPanel.setActive(false);
 }



public void UserClickedS1()
 {
 Debug.Log("storage 1 needed!")
 HideAllThreePanels()
 yourFIRSTPanel.setActive(true);
 }
public void UserClickedS2()
 {
 Debug.Log("storage 2 needed!")
 HideAllThreePanels()
 yourSECONDPanel.setActive(true);
 }
public void UserClickedS3()
 {
 Debug.Log("storage 3 needed!")
 HideAllThreePanels()
 yourTHIRDPanel.setActive(true);
 }

5, in those three routines, call whatever you want. you seem to already have a script that does ... something. simply have THREE scripts like that, which have the different "amounts" or whatever it is you're saying. simply call the three different scripts from the three different buttons.

Note that you just set all three to be hidden, and then reveal the needed item. It's that easy!

---

NOTE in your code edit,

   for(int i = 1; i <= 20; i++) {
        hslot = GameObject.Find("slot-"+i).SetActive(true);
        hslot.SetActive(true);
    }

This is wrong: "hslot = GameObject.Find("slot-"+i).SetActive(true);"

Also the whole loop is wrong, should be

  for(int i = 1; i <= 20; i++) {
       String theName = "slot-" + i.ToString();
       Debug.Log("Looking for: " +theName);
       GameObject gFound = GameObject.Find("slot-"+i);
       if (gFound == nil)
        {
        Debug.Log("COULD NOT FIND IT! " +theName);
        continue;
        }
       gFound.SetActive(true);
    }

NOTE HOWEVER THAT !

GameObject.Find does NOT FIND inactive objects!

Note that you are ALREADY KEEPING THEM IN AN ARRAY! (slotsx I think.)

Just use that array!

---

Finally in fact you should do this:

Group all the slots under three empty gameobjects and just disable/enable those. This way you don't need a loop.